我如何将参数传递到Visual Studio 2012中的Crystal Reports Windos应用程序中

问题描述

我有一个报告，我想传递一个datetime参数并将该参数显示在报告中.我有一个代码，但是转发中的字段仍然为空.

I have a report which I want to pass a datetime parameter and display that parameter into the report. I have a code but then the field in the repost is still blank.

Dim paramFields As New ParameterFields
               Dim paramField1 As New ParameterField
               Dim paramField2 As New ParameterField
               Dim discreteVal As New ParameterDiscreteValue


               discreteVal.Value = odDatumPicker.Value
               paramField1.ParameterFieldName = "@Datum"
               paramField1.CurrentValues.Add(discreteVal)
               paramFields.Add(paramField1)


               CrystalReportViewer1.ParameterFieldInfo = paramFields

推荐答案

Dim crReportDoc As New ReportDocument()
Dim crpConnectionInfo As New ConnectionInfo()
crReportDoc.Load(FilePath)
crpConnectionInfo.AllowCustomConnection = True
crpConnectionInfo.ServerName = [servername]
crpConnectionInfo.DatabaseName = [dbname]
crpConnectionInfo.UserID = [username]
crpConnectionInfo.Password = [password]

For Each tblCurrent In _crReportDoc.Database.Tables
    crpTableLogonInfo = tblCurrent.LogOnInfo
    crpTableLogonInfo.ConnectionInfo = crpConnectionInfo
    tblCurrent.ApplyLogOnInfo(crpTableLogonInfo)
Next
crReportDoc.VerifyDatabase()
crReportDoc.SetParameterValue("@Datum", odDatumPicker.Value)
CrystalReportViewer1.ReportSource = crReportDoc

请更改ConnectionInfo

Please change the ConnectionInfo

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