Connecting SP to a Crystal Report

8/6/2019 Connecting SP to a Crystal Report

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Re: Connecting a stored procedure to a crystal report

08-16-2007 07:05 AM

After much trial and error, here is a simple solution for connecting a stored procedure to a crystal report, passing values to a stored procedure for a crystalreport and logging into a database through the report viewer. The code is in vb

.net, but it can easily be converted to C#.

What you will need for this example:

Visual Studio 2005, crystal reports, sql server 2005

Crystal Reports will prompt you to supply a username and password before you cansee your report in your application. To automatically log in to the database a

nd avoid this, you can do this programmatically. Instead of placing the code inthe Load Event, place it in the Init event.

Here is the sample code to bypass the database login prompt:

1)

Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init

ConfigureReport()End Sub

2) Set up the ConfigureReport() subroutine:

Private Sub ConfigureReport()If Not Page.IsPostBack Then

Dim myConnectionInfo As ConnectionInfo = New ConnectionInfo()

myConnectionInfo.DatabaseName = DatabaseNamemyConnectionInfo.UserID = useridmyConnectionInfo.Password = passwordDim ReportPath As String = Server.MapPath("YourReport.rpt")ReportViewer1.ReportSource = ReportPathSetDBLogonForReport(myConnectionInfo)

End If

3) Set up the Database Logon subroutine:

Private Sub SetDBLogonForReport(ByVal myConnectionInfo As ConnectionInfo)Dim myTableLogOnInfos As TableLogOnInfos = ReportViewer1.LogOnInfo()

For Each myTableLogOnInfo As TableLogOnInfo In myTableLogOnInfosmyTableLogOnInfo.ConnectionInfo = myConnectionInfoNext

End Sub

4) Make sure you have the following Import statements at the top of the code page.

Imports CrystalDecisions.CrystalReports.EngineImports CrystalDecisions.SharedImports System.DataImports System.Data.SqlClient

Note: the last import statement is if you decide to use a sql connection.

5) Create your parameterized stored procedure in sql server


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Sample stored procedure:

CREATE PROCEDURE sp_YourProcedure

@value1 int,@value2 int

ASBEGINSET NOCOUNT ON;SELECT * FROM Table WHERE column1=@value1 and column2=@value2END

6) Connect this stored procedure to your crystal report (if you haven't createda report already with its connections)

To do this, go into Visual Studio 2005, go into your project, click website>add

new item>choose crystal reports

Name your report and continue through the wizard. In Database Expert, expand create new connection, expand oledb (ado), select SQL Server, enter server info, select database. Click Next. Expand your server node, expand your database node,expand the dbo node, expand stored procedure node, select your stored procedureand place it in the Selected Tables column by clicking the ">" button. Click O

K.

Somewhere in the process, they will ask for values for your parameter values, don't provide any, just click OK.

7) When the report comes up in vs2005, go into Field Explorer, expand the Databa

se Fields Node, add whatever columns to your report by drop and drag.

8) Go back into your code page. Add these lines of code to the ConfigureReport() subroutine after the line "ReportViewer1.ReportSource = ReportPath"

Dim field1 As ParameterField = Me.ReportViewer1.ParameterFieldInfo(0)


Dim val1 As New ParameterDiscreteValue()Dim val2 As New ParameterDiscreteValue()val1.Value = "value1"val2.Value = "value2"field1.CurrentValues.Add(val1)field2.CurrentValues.Add(val2)

Because I have two values, I need two discrete values. Whatever the values ofyour parameter values, it will be passed to value1 and value2. These values cancome from anywhere, a user textbox, combo box, etc. I have used session variab

les myself, but that has drawbacks.

Here is the complete code:

Imports CrystalDecisions.CrystalReports.EngineImports CrystalDecisions.SharedImports System.Data

Imports System.Data.SqlClient

Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Han


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dles Me.InitConfigureReport()

End Sub

Private Sub ConfigureReport()If Not Page.IsPostBack Then

Dim myConnectionInfo As ConnectionInfo = New ConnectionInfo()

myConnectionInfo.DatabaseName = DatabaseNamemyConnectionInfo.UserID = useridmyConnectionInfo.Password = passwordDim ReportPath As String = Server.MapPath("YourReport.rpt")ReportViewer1.ReportSource = ReportPath



Dim val1 As New ParameterDiscreteValue()Dim val2 As New ParameterDiscreteValue()

val1.Value = "value1"val2.Value = "value2"field1.CurrentValues.Add(val1)field2.CurrentValues.Add(val2)

SetDBLogonForReport(myConnectionInfo)End If

End Sub

Private Sub SetDBLogonForReport(ByVal myConnectionInfo As ConnectionInfo)Dim myTableLogOnInfos As TableLogOnInfos = ReportViewer1.LogOnInfo()For Each myTableLogOnInfo As TableLogOnInfo In myTableLogOnInfos

myTableLogOnInfo.ConnectionInfo = myConnectionInfo

NextEnd Sub

Run your report and it should show up without prompting for a username, password or parameter values.

I hope this helps someone else who was just as frustrated as I was trying to getinfo on this. Please feel free to comment on this solution if you like.

Code Or Die!

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Connecting SP to a Crystal Report