Pass NULL to SSRS URL access parameter?

问题

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

i.e. when using the form

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

回答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

来源：https://stackoverflow.com/questions/1433477/pass-null-to-ssrs-url-access-parameter