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In the following section you can see , how to create a sample Database and Tables and data for

running Crystal ReportsTutorials . All examples in the VB.NET Crystal Reports Tutorials

are based on the following database . First we have to create a database . Give the database nameas "crystaldb"

Create a DataBase "crystaldb"

In the crystaldb database , create three tables

OrderM aster , OrderDetails , Product.

OrderMaster

OrderM aster_id

OrderM aster_date

OrderMaster_customer

OrderMaster_createduser

OrderDetails

OrderDetails_id

OrderDetails_masterid

OrderDetails_productid

OrderDetails_qty

Product

Product_id

Product_name

Product_price

The following picture shows the relations of each table :

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SQL command for creation tables are follows :

CREATE TABLE [ dbo].[OrderM aster] (

[OrderM aster_id] [i nt] NOT NULL ,

[OrderM aster_date] [datetime] NULL ,

[OrderMaster_customername] [varchar] (50),

[OrderMaster_createduser] [varchar] (50)

) ON [PRIMARY]

CREATE TABLE [dbo].[OrderDetail s] (

[OrderDetails_id] [in t] NOT NULL ,

[OrderDetails_masteri d] [int] NULL ,

[OrderDetails_productid] [ int] NULL ,

[OrderDetails_qty] [i nt] NULL

) ON [PRIMARY]

CREATE TABLE [dbo].[Product] (

[Product_id] [ int] NOT NULL ,

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[Product_name] [varchar] (50) ,

[Product_pri ce] [numeric](18, 0) NULL

) ON [PRIMARY]

Enter data to the tables :

Order Master Table Data

Order Details Table Data

Product Table Data

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Start your first VB.NET Crystal Reports.

All Crystal Reportsprogramming samples in this tutorials is based on the following database

(crystaldb) . Please take a look at the database structure before you start this tutorial - Click hereto seeDatabase Structure.

Open Visual Studio .NET and select a new Visual Basic .NET Project.

Create a new Crystal Reports for Product table from the above database crystalDB. The ProductTable has three fields (Product_id,Product_name,Product_price) and we are showing the whole

table data in the Crystal Reports.

From main menu in Visual Studio select PROJECT-->Add New Item. Then Add New Item

dialogue will appear and select Crystal Reportsfrom the dialogue box.
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Select Report type from Crystal Reports gallery.

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Accept the default settings and click OK.

Next step is to select the appropriate connection to your database. Here we are going to selectOLEDB connection for SQL Server

Select OLE DB (ADO) from Create New Connection .

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Select Microsoft OLE DB Provider for SQL Server.

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Next screen is the SQL Server authentication screen . Select your Sql Server name, enter

userid , passwordand select your Database Name . Click next , Then the screen shows OLEDB Property values , leave it as it is , and click finish.

Then you will get your Server name under OLEDB Connectionfrom there select database name

(Crystaldb) and click the tables , then you can see all your tables from your database.

From the tables list select Product table to the right side list .

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Click Next Button

Select all fields from Product table to the right side list .

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Click Finish Button. Then you can see the Crystal Reports designer window . You can arrange

the design according your requirements. Your screen look like the following picture.

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Now the designing part is over and the next step is to call the created Crystal Reports in VB.NET

through Crystal Reports Viewer control.

Select the default form (Form1.vb) you created in VB.NET and drag a button and

CrystalReportViewercontrol to your form.

Select Form's source code view and put the code on top

Imports CrystalDecisions.CrystalReports.Engine

Put the following source code in the button click event

Download Source Code

Print Source Code


Public Class Form1Private Sub Button1_Click(ByVal sender As System.Object,

ByVal e As System.EventArgs) Handles Button1.ClickDim cryRpt As New ReportDocumentcryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End SubEnd Class
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NOTES:cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")

The Crystal Reports is in your project location, there you can see CrystalReport1.rpt. So give

the full path name of report here.

After you run the source code you will get the report like this.

Hope this tutorial help you to create your first Crystal Reports.

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All Crystal Reportsprogramming samples in this tutorials is based on the following database(crystaldb) . Please take a look at the database structure before you start this tutorial - Click here

to seeDatabase Structure.

Here we are going to do is to generate Crystal Reports from multiple tables. Here we have three

table (ordermaster , orderdetails amd product ) and we are generating report from these threetables by connecting each tables with their related fields.

Open Visual Studio .NET and select a new Visual Basic .NET Project.

From main menu in Visual Studio select PROJECT-->Add New Item. Then Add New Itemdialogue will appear and select Crystal Reportsfrom the dialogue box.
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Select Report type from Crystal Reports gallery.

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Accept the default settings and click OK.

Next step is to select the appropriate connection to your database. Here we are going to selectOLEDB connection for SQL Server

Select OLE DB (ADO) from Create New Connection .

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Select Microsoft OLE DB Provider for SQL Server.

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Next screen is the SQL Server authentication screen . Select your Sql Server name, enter

userid , passwordand select your Database Name . Click next , Then the screen shows OLEDB Property values , leave it as it is , and click finish.

Then you will get your Server name under OLEDB Connectionfrom there select database name

(Crystaldb) and click the tables , then you can see all your tables from your database.

Select all table from the table list to right side list box, because we are creating report from three

tables ( OrderMaster, OrderDetails, Product) .

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The next step is to make relation between these selected tables. Here we are connecting therelated fields from each table. For that we arrange the tables in visible area in the list (this is not

necessary ) and select the field we are going to make relation and drag to the related field of theother table. After made the relation the screen is look like the following picture .

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Next step is to select the fields from the tables . Here we are selecting only Customername ,

orderdate from ordermastertable , Productname from product table and quantity from order

details.

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Click the Finish button because now we are not using other functionalities of this wizard. After

that you will get the Crystal Reports designer window . You can arrange the fields in the

designer window according to your requirement to view the report . For rearranging you can dragthe field object in the screen . For editing right click the field object and select Edit Text Object.

The following picture shows the sample of designer window after rearrange the field.

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Now the designing part is over and the next step is to call the created Crystal Reports in VB.NET

through Crystal Reports Viewer control.

Select the default form (Form1.vb) you created in VB.NET and drag a button and


Select Form's source code view and put the code on top




Print Source Code


Public Class Form1Private Sub Button1_Click(ByVal sender As System.Object,

ByVal e As System.EventArgs) Handles Button1.ClickDim cryRpt As New ReportDocumentcryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End SubEnd Class
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The Crystal Report is in your project location, there you can see CrystalReport1.rpt. So give


After you run the source code you will get the report like this.

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Here we are passing a String parameter from vb.net to Crystal Reports . For that , from vb.net

program we pass a customer name as parameter and show all the order of that customer to theCrystal Reports.

In the previous tutorial we saw how to generate a Crystal Reports from multiple tables. Here isthe continuation of that tutorial , the only different is that we are passing a Customer Name as a

String parameter and get the report of that particular Customer only . Before starting to this

tutorial just take a look at the previous tutorial (Crystal Report from multiple tables).

In the previous section we are getting the report of all orders from all customers , that is the all

order placed by all customers , here is only one customer.

Hope you went through previous tutorial , if not click here (Crystal Report from multiple tables).

Next step is to create a string parameter in Crystal report.

Select the Field Explorer from CrystalReport Menu.

Then you can see Field Explorer in the Left hand side.

Select Parameter Field from Field Explorer and right Click.
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Fill the appropriate name for Name and Promting text fields

After creating the parameter field , we have to create the selection formula for the CrystalReports .

For creating selection formula , Right click on Crystal Reports designer window , select

REPORT -> SELECTION FORMULA -> RECORD .

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Then you can see the record Selection Formula Editor. This for entering the selection formula.For that you have to select the fields from above fields and make the formula .

First you have to select OrderMaster.OrderMaster_customername from Report Field and selectthe comparison operator and select the parameter field. Double click each field then it will be

selected.

Form the following picture you can understand the selection fields.

After the creation of selection formula close that screen .

Now the designing part is over and the next step is to call the created Crystal Reports in VB.NETthrough Crystal Reports Viewer control.

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Select the default form (Form1.vb) you created in VB.NET and drag a Textbox , button and


Select Form's source code view and import the following :


Imports CrystalDecisions.Shared



Print Source Code

Imports CrystalDecisions.CrystalReports.EngineImports CrystalDecisions.SharedPublic Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, _ByVal e As System.EventArgs) Handles Button1.Click

Dim cryRpt As New ReportDocumentcryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")

Dim crParameterFieldDefinitions As ParameterFieldDefinitionsDim crParameterFieldDefinition As ParameterFieldDefinitionDim crParameterValues As New ParameterValuesDim crParameterDiscreteValue As New ParameterDiscreteValue

crParameterDiscreteValue.Value = TextBox1.TextcrParameterFieldDefinitions = -

cryRpt.DataDefinition.ParameterFieldscrParameterFieldDefinition = _
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crParameterFieldDefinitions.Item("Customername")crParameterValues = crParameterFieldDefinition.CurrentValues

crParameterValues.Clear()crParameterValues.Add(crParameterDiscreteValue)crParameterFieldDefinition.ApplyCurrentValues(crParameterValues)

CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End SubEnd Class




Now you can run the program . Enter a Customer Name(enter any existing customer fromOrdermaster table) and click the button , then your report is look like the following picture.

Here we get the result of the Customer4's order details.

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In this tutorial we are passing an Integer Parameter to Crystal Reports from VB.NET.

In the previous tutorial , we sawpassing a string parameter to Crystal Reportsfrom VB.NET and

get the result. This is very similar to that tutorial , so here showing only the change information

part only. So please take a look at the complete part ofpassing a string parameter to CrystalReportsfrom VB.NET.

When we pass an Integer parameter , we have to create a new Integer parameter in the Parameter

Fields of Field Explorer. Then we will get the following screen and fill the fields like in the

picture .

After creating the parameter field , we have to create the selection formula for the CrystalReports . For creating selection formula , Right click on Crystal Reports designer window , selectREPORT -> SELECTION FORMULA -> RECORD .

Then you can see the record Selection Formula Editor. This for entering the selection formula.For that you have to select the fields from above lists and make the formula .

Here we made the formula like select the records from Product table whose value is greater thanthe input value. For that first we select the table field that is Product_price from Product tableand then we select the comparison operator and finally we select our Parameter we created

earlier. Double click each field then it will automatically selected
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Now the designing part is over and the next step is to call the created Crystal Reports in VB.NETthrough Crystal Reports Viewer control.

Select the default form (Form1.vb) you created in VB.NET and drag a Textbox , button andCrystalReportViewercontrol to your form.






Print Source Code




Dim crParameterFieldDefinitions As ParameterFieldDefinitions
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Dim crParameterFieldDefinition As ParameterFieldDefinitionDim crParameterValues As New ParameterValuesDim crParameterDiscreteValue As New ParameterDiscreteValue

crParameterDiscreteValue.Value = Convert.ToInt32(TextBox1.Text)crParameterFieldDefinitions = _


crParameterFieldDefinitions.Item("Price")crParameterValues = crParameterFieldDefinition.CurrentValues



End SubEnd Class




Now you can run the program . Enter any price , then you can see the report of the Product list

whose price is greater than or equal to the entered price.

Here we got the result of Product list whose price is grater than 50.

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In this tutorial we are passing a date variable to Crystal Reports from VB.NET.

In the previous tutorials , we sawpassing a string parameter to Crystal Reports,integer

parameter to Crystal reportfrom VB.NET and get the result. This tutorial is very similar to the

above two tutorials , so please take look into the two tutorials before we start this one.

When we pass a Date parameter, we have to create a new date parameter in the Parameter Fieldsof Field Explorer. Then we will get the following screen and fill the fields like in the picture .

After creating the parameter field , we have to create the selection formula for the CrystalReports . For creating selection formula , Right click on Crystal Reports designer window , select

REPORT -> SELECTION FORMULA -> RECORD .

Then you can see the record Selection Formula Editor. This for entering the selection formula.

For that you have to select the fields from above lists and make the formula .

Here we are making the formula like , select all records details from the tables whose order dateis greater than the input date parameter. For doing this you have to select Ordermaster.orderdate ,

comparison operator and parameter date field from selection list of Formula Editor and make the

formula.
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Now the designing part is over and the next step is to call the created Crystal Reports in VB.NETthrough Crystal Report Viewer control.

Select the default form (Form1.vb) you created in VB.NET and drag a Textbox , button andCrystalReportViewercontrol to your form.






Print Source Code




Dim crParameterFieldDefinitions As ParameterFieldDefinitions
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Dim crParameterFieldDefinition As ParameterFieldDefinitionDim crParameterValues As New ParameterValuesDim crParameterDiscreteValue As New ParameterDiscreteValue

crParameterDiscreteValue.Value = TextBox1.TextcrParameterFieldDefinitions = _


crParameterFieldDefinitions.Item("Orderdate")crParameterValues = crParameterFieldDefinition.CurrentValues



End SubEnd Class




Now you can run the program . Enter any date , then you can see the report whose order date is

greater than or equal to the entered date.

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Here we got the result of orders whose date is greater than the entered date

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In this section we are passing User ID , Password , Server Name and Database Name

dynamically to Crystal Reports from vb.net .

SITUATIONS :

In many situations this is useful , for example if you develop a database project in a test server

and later you have to migrate it , in such situations you have to give these informationdynamically to Crystal Reports.

In this program we are using our earlier program and pass the values dynamically to Crystal

Reports. Before we start this section take a look at thestep by step Crystal Reportin VB.NET .

In thestep by step Crystal Reportwe created a report selecting all data from the Product table .There is no chance to change the server on runtime in that case because it is a static report . Herewe are passing Server Name , UserID and Password dynamically to the Crystal Reports.

Here we use Crystal Reports ConnectionInfo .

Dim crConnectionI nfo As New ConnectionInfo, and pass these arguments to ConnectionInfo

Select the default form (Form1.vb) you created in VB.NET and drag a button andCrystalReportViewercontrol to your form.






Print Source Code



Dim cryRpt As New ReportDocumentDim crtableLogoninfos As New TableLogOnInfosDim crtableLogoninfo As New TableLogOnInfoDim crConnectionInfo As New ConnectionInfoDim CrTables As Tables
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Dim CrTable As Table

cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")

With crConnectionInfo.ServerName = "YOUR SERVER NAME".DatabaseName = "YOUR DATABASE NAME".UserID = "YOUR DATABASE USERNAME".Password = "YOUR DATABASE PASSWORD"

End With

CrTables = cryRpt.Database.TablesFor Each CrTable In CrTables

crtableLogoninfo = CrTable.LogOnInfocrtableLogoninfo.ConnectionInfo = crConnectionInfoCrTable.ApplyLogOnInfo(crtableLogoninfo)

Next


End SubEnd Class




You have to replace the source code values of " YOUR SERVER NAME" , " YOUR

DATABASE NAME" , " YOUR DATABASE USERNAME" , " YOUR DATABASE

PASSWORD" with your correct values .

When you run this program you will get the following screen.

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In this tutorial we are adding a Formula Fieldin existing Crystal Reports .

SITUATIONS :

If you have a Crystal Reports with Qty and Price , you need an additional field in your Crystal

Reports for the Total of QTY X PRICE . In this situation you have to use the Formula Fieldin

Crystal Reports.

In this tutorial we are showing the all orders with qty and price and the total of each row , that

means each in each row we are showing the total of qty and price. Before starting this tutorial.

Create a new Crystal Reports with fields CustomerName , Order Date , Product Name and

Product Price . If you do not know how to create this report , just look the previous tutorialCrystal Report from multiple tables. In that report selecting only four fields , here we need onemore field Prodcut->Price .

After you create the Crystal Reports you screen is look like the following picture :

Next is to create the a Formula Fieldfor showing the total of Qty and Price .

Right Click Formula Fieldin the Field Explorer and click New. Then you will get an Input

Message Box , type Total in textbox and click Use Editor
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Now you can see Formula Editor screen . Now you can enter which formula you want . Here wewant the result of Qty X Pr ice. For that we select OrderDetails.Qty , the multiplication operator

and Product.Price . Double click each field for selection.

Now you can see Total Under the Formula Field. Drag the field in to the Crystal Reports where

ever you want .

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Now the designing part is over . Select the default form (Form1.vb) you created in VB.NET and

drag a button and CrystalReportViewercontrol to your form.





Print Source Code



Dim cryRpt As New ReportDocumentcryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End SubEnd Class

NOTES:




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In this tutorial we are taking the sum of field value of Total . This is the continuation of the

previous tutorialCrystal Report Formula Field. So before we start this tutorial , take a look atthe previous tutorialCrystal Report Formula Field.

Here we are taking the grand total of the Total field . The Total field is a Formula field is theresult of qty X price .

In the Crystal Reports designer view right click on the Report Footer , just below the Total field

and select Insert -> Summary .

Then you will get a screen , select the Total from the combo box and Sum from next Combo Box, and summary location Grand Total (Report Footer) . Click Ok button
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Now you can see @Total is just below the Total field in the report Footer.

Now the designing part is over . Select the default form (Form1.vb) you created in VB.NET and

drag a button and CrystalReportViewercontrol to your form.





Print Source Code

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Imports CrystalDecisions.SharedPublic Class Form1


Dim cryRpt As New ReportDocumentcryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End SubEnd Class





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Exporting from Crystal Reports to PDF format, we are using Crystal ReportssCrExportOptions. Also we have to set PdfRtfWordFormatOptions and

ExportFormatType.PortableDocFormat . In the following example you can see how to export aCrystal Reports as a PDF format file.



In this tutorial we are using our earlier programstep by step Crystal Reportfor pull data from

database to Crystal Reports . Before we start this section take a look at thestep by step Crystal

Reportin VB.NET .

In thestep by step Crystal Reportwe pull all data from Product table , here now we are exporting

that data to a PDF format file.

Select the default form (Form1.vb) you created in VB.NET and drag two buttons (Button1,Button2 ) and CrystalReportViewercontrol to your form.



Put the following source code in the button click events


Print Source Code


Dim cryRpt As New ReportDocument


cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, _

ByVal e As System.EventArgs) Handles Button2.ClickTry

Dim CrExportOptions As ExportOptionsDim CrDiskFileDestinationOptions As New _DiskFileDestinationOptions()Dim CrFormatTypeOptions As New PdfRtfWordFormatOptions()CrDiskFileDestinationOptions.DiskFileName = _

"c:\crystalExport.pdf"CrExportOptions = cryRpt.ExportOptions
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With CrExportOptions.ExportDestinationType = ExportDestinationType.DiskFile.ExportFormatType = ExportFormatType.PortableDocFormat.DestinationOptions = CrDiskFileDestinationOptions.FormatOptions = CrFormatTypeOptions

End WithcryRpt.Export()

Catch ex As ExceptionMsgBox(ex.ToString)

End TryEnd Sub

End Class

NOTES:




When you run this program you will get the PDF file (crystalExport.pdf) in your computer's C:

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Exporting from Crystal Reports to Excel format, we are using Crystal ReportsCrExportOptions. Also we have to set ExcelF ormatOptions and ExportFormatType.Excel . In

the following example you can see how to export a Crystal Reports as a Excel format file.

All Crystal Reportsprogramming samples in this tutorials is based on the following database

(crystaldb) . Please take a look at the database structure before you start this tutorial - Click hereto see Database Structure .

In this tutorial we are using our earlier programstep by step Crystal Reportpull data fromdatabase to Crystal Reports . Before we start this section take a look at thestep by step Crystal

Reportin VB.NET .

In thestep by step Crystal Reportwe pull all data from Product table , here now we are exporting

that data to a Excel format file.

Select the default form (Form1.vb) you created in VB.NET and drag two buttons (Button1,

Button2 ) and CrystalReportViewercontrol to your form.



Put the following source code in the button click events


Print Source Code


Dim cryRpt As New ReportDocument


cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")CrystalReportViewer1.ReportSource = cryRptCrystalReportViewer1.Refresh()

End Sub


TryDim CrExportOptions As ExportOptionsDim CrDiskFileDestinationOptions As New _DiskFileDestinationOptions()Dim CrFormatTypeOptions As New ExcelFormatOptionsCrDiskFileDestinationOptions.DiskFileName = _

"c:\crystalExport.xls"CrExportOptions = cryRpt.ExportOptionsWith CrExportOptions

.ExportDestinationType = ExportDestinationType.DiskFile
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.ExportFormatType = ExportFormatType.Excel.DestinationOptions = CrDiskFileDestinationOptions.FormatOptions = CrFormatTypeOptions

End WithcryRpt.Export()

Catch ex As ExceptionMsgBox(ex.ToString)

End TryEnd Sub

End Class

NOTES:




When you run this program you will get the Excel file (crystalExport.xls) in your computer's C:

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The DataGridView control provides a customizable table for displaying data. It gives younumber of properties, methods and events to customize its appearance and behavior.

Unfortunately the DataGridView doesn't have a built in printing functionality . So here we do a

tricky way to print the content of DataGridView . Here we add a PrintDocument object to theproject and handle the PrintPage event which is called every time a new page is to be printed.

Here in the PrintPage event we create a Bitmap Object and draw the DataGridView to the

Bitmap Object.

In order to run this vb.net project you have to drag two buttons ,one for load data and one for

print command, and drag a PrintDocument control on your form . The following picture shows

how to drag PrintDocument Object to your project.


Print Source Code

Imports System.Data.SqlClientPublic Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e AsSystem.EventArgs) Handles Button1.Click

Dim connectionString As String = "Data Source=.;InitialCatalog=pubs;Integrated Security=True"

Dim sql As String = "SELECT * FROM Authors"Dim connection As New SqlConnection(connectionString)Dim dataadapter As New SqlDataAdapter(sql, connection)Dim ds As New DataSet()connection.Open()dataadapter.Fill(ds, "Authors_table")connection.Close()DataGridView1.DataSource = ds
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DataGridView1.DataMember = "Authors_table"End Sub


PrintDocument1.Print()End Sub

Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVale As System.Drawing.Printing.PrintPageEventArgs) HandlesPrintDocument1.PrintPage

Dim bm As New Bitmap(Me.DataGridView1.Width, Me.DataGridView1.Height)DataGridView1.DrawToBitmap(bm, New Rectangle(0, 0,

Me.DataGridView1.Width, Me.DataGridView1.Height))e.Graphics.DrawImage(bm, 0, 0)

End SubEnd Class

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The DataGridView control and its related classes are designed to be a flexible, extensible systemfor displaying and editing tabular data. You can use a DataGridView control to display data with

or without an underlying data source.

The following vb.net source code shows how to Import data from an Excel file to a

DataGridView control .


Print Source Code



Dim MyConnection As System.Data.OleDb.OleDbConnectionDim DtSet As System.Data.DataSetDim MyCommand As System.Data.OleDb.OleDbDataAdapter

MyConnection = NewSystem.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;DataSource='c:\vb.net-informations.xls';Extended Properties=Excel 8.0;")

MyCommand = New System.Data.OleDb.OleDbDataAdapter("select * from[Sheet1$]", MyConnection)

MyCommand.TableMappings.Add("Table", "Net-informations.com")DtSet = New System.Data.DataSetMyCommand.Fill(DtSet)DataGridView1.DataSource = DtSet.Tables(0)MyConnection.Close()

End SubEnd Class
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The DataGridView control provides a customizable table for displaying data. Displaying data ina tabular format is a task you are likely to perform frequently. The DataGridView control is

highly configurable and extensible, and it provides many properties, methods, and events tocustomize its appearance and behavior.

The following vb.net source code shows how to Export the content of a datagridview to an Excelfile.


Print Source Code

Imports System.Data.SqlClientImports Excel = Microsoft.Office.Interop.ExcelPublic Class Form1


Dim connectionString As String = "Data Source=.;InitialCatalog=pubs;Integrated Security=True"

Dim sql As String = "SELECT * FROM Authors"Dim connection As New SqlConnection(connectionString)Dim dataadapter As New SqlDataAdapter(sql, connection)Dim ds As New DataSet()connection.Open()dataadapter.Fill(ds, "Authors_table")connection.Close()DataGridView1.DataSource = dsDataGridView1.DataMember = "Authors_table"

End Sub


Dim xlApp As Excel.ApplicationDim xlWorkBook As Excel.WorkbookDim xlWorkSheet As Excel.WorksheetDim misValue As Object = System.Reflection.Missing.Value

Dim i As Int16, j As Int16

xlApp = New Excel.ApplicationClassxlWorkBook = xlApp.Workbooks.Add(misValue)xlWorkSheet = xlWorkBook.Sheets("sheet1")

For i = 0 To DataGridView1.RowCount - 2For j = 0 To DataGridView1.ColumnCount - 1

xlWorkSheet.Cells(i + 1, j + 1) = DataGridView1(j,i).Value.ToString()

NextNext
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xlWorkBook.SaveAs("c:\vb.net-informations.xls",Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue,_

Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue,misValue, misValue)

xlWorkBook.Close(True, misValue, misValue)xlApp.Quit()

releaseObject(xlWorkSheet)releaseObject(xlWorkBook)releaseObject(xlApp)

MessageBox.Show("Over")End Sub

Private Sub releaseObject(ByVal obj As Object)Try

System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)obj = Nothing

Catch ex As Exceptionobj = NothingMessageBox.Show("Exception Occured while releasing object " +

ex.ToString())Finally

GC.Collect()End Try

End Sub

End Class

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The DataGridView class allows customization of cells, rows, columns, and borders through theuse of its properties . If a DataGridView has lot of rows then we can implement paging

functionalities to the DataGridView control. While we implement paging we should know the

boundaries of the pages to enable the paging in the DatagridView.

The following vb.net program provides a way to programmatically implement paging in a

Windows Datagrid View control. Here the DataGridView rows fixed as five rows and other two

buttons are there for implementing paging functionalities.


Print Source Code


Dim pagingAdapter As SqlDataAdapterDim pagingDS As DataSetDim scrollVal As Integer

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As

System.EventArgs) Handles Button1.ClickDim connectionString As String = "Data Source=.;InitialCatalog=pubs;Integrated Security=True"

Dim sql As String = "SELECT * FROM authors"Dim connection As New SqlConnection(connectionString)pagingAdapter = New SqlDataAdapter(sql, connection)pagingDS = New DataSet()connection.Open()pagingAdapter.Fill(pagingDS, scrollVal, 5, "authors_table")connection.Close()
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DataGridView1.DataSource = pagingDSDataGridView1.DataMember = "authors_table"

End Sub

Private Sub button2_Click(ByVal sender As System.Object, ByVal e AsSystem.EventArgs) Handles button2.Click

scrollVal = scrollVal - 5If scrollVal 23 Then

scrollVal = 18End If

pagingDS.Clear()pagingAdapter.Fill(pagingDS, scrollVal, 5, "authors_table")

End SubEnd Class

Documents

Report Vb2010