将NULL传递给SSRS URL访问参数？

Question

How does one specify a NULL value when passing a parameter to an SSRS report using URL access?

ie when using the form

http://server/ReportServer/Pages/ReportViewer.aspx?Report&Parameter=value

Answer 1

Use the syntax

Parameter:IsNull=True

In the example given above:

http://server/ReportServer/Pages/ReportViewer.aspx?Report&Parameter:IsNull=True

Reference: http://msdn.microsoft.com/en-us/library/ms155391(loband).aspx