Design Time Problems

I want to show my report in a ReportViewer control, but when I click on the arrow in the Report property from the property grid, it does not show available reports - what is wrong?

Make sure that to follow our best practices and have the report in a separate code library that is referenced in the web app/site. Check if the class library containing the report is referenced in your app/site and that you have rebuilt your app/site.

The most reliable way to specify a report for the ReportViewer is to do this programmatically on the Page_Load event of the page. For example:

CopyC#

Page_Load(object sender, System.EventArgs e)
{
    if (!Page.IsPostBack) 
    {
        this.ReportViewer1.Report = new ReportLibrary.Report1();
    }
}

CopyVB.NET

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            Me.ReportViewer1.Report = New ReportLibrary.Report1()
        End If
    End Sub

A multi-column report shows fine when using Preview, but when used as a subreport, it shows as a one-column report only

The multi-column functionality is intended to be used only in the main report because all report sections (excluding Page sections) are rendered in a column-wise layout, thus the report can be wide only one column.

Telerik Reporting