I'm new to vb and therefor I can't find where is the error while I'm making reports.
I coded My report button like this :
Dim adapter As New MySqlDataAdapter Dim ds As New DataSet1 adapter.SelectCommand = New MySqlCommand("Select * from mcs.custormer", Form1.mysqlcon) adapter.Fill(ds.Tables(0)) ReportViewer1.ProcessingMode = Microsoft.Reporting.WinForms.ProcessingMode.Local ReportViewer1.LocalReport.ReportPath = System.Environment.CurrentDirectory & "\report1.rdlc" ReportViewer1.LocalReport.DataSources.Clear() ReportViewer1.LocalReport.DataSources.Add(New Microsoft.Reporting.WinForms.ReportDataSource("Dataset1_datatable1", ds.Tables(0))) ReportViewer1.DocumentMapCollapsed = True Me.ReportViewer1.RefreshReport()
When I run this program it says :
"a data source instance has not been supplied for the datasource 'dataset1'" error.
Please help me guys