Report viewer in Wpf

Question

3.67/5 (2 votes)

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Hi all

Below is mycode for displaying the report

VB

Dim dt As New DataTable

       dt.Rows.Clear()

       Dim cmd As New SqlCommand("Select ProductCode,sum(price) as price, DateTransaction from sales where ProductCode= '" & ComboBox1.SelectedValue.ToString & "' group BY ProductCode, DateTransaction", con)
       con.Close()
       con.Open()

       Dim da As New SqlDataAdapter(cmd)
       da.Fill(dt)

       Dim reportDataSource As New ReportDataSource()
       reportDataSource.Name = "DataSet1"
       reportDataSource.Value = dt
       _reportViewer.LocalReport.ReportPath = "\Report2.rdlc"
       _reportViewer.LocalReport.DataSources.Add(reportDataSource)
       _reportViewer.RefreshReport()

The problem is from the combo box which ever value i selects first, of all other values, it's showing the same data.

e.g. if i am selecting P002, it will display
then when select P001 or P003, at that time also it's displaying the data of P002.

PLease tell me what is went wrong in this..

Posted 8-Dec-13 23:06pm

Snehasish_Nandy

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thatraja · Accepted Answer · 2013-12-08T23:54:00

Add these lines in your code & try again

VB

ReportViewer1.Reset()
ReportViewer1.LocalReport.DataSources.Clear()
ReportViewer1.LocalReport.Refresh()

Updated code should be like below

VB

Dim reportDataSource As New ReportDataSource()
reportDataSource.Name = "DataSet1"
reportDataSource.Value = dt
_reportViewer.Reset()
_reportViewer.LocalReport.ReportPath = "\Report2.rdlc"
_reportViewer.LocalReport.DataSources.Clear()
_reportViewer.LocalReport.DataSources.Add(reportDataSource)
_reportViewer.LocalReport.DataSources.Refresh()
_reportViewer.RefreshReport()