I have a parameter in my SSRS report which I have marked as "Allow Null Value". But when I dont send that parameter from my C# code. I get the below error.
Message=This report requires a default or user-defined value for the report parameter 'UserID'. To run or subscribe to this report, you must provide a parameter value. (rsReportParameterValueNotSet)
Here is the parameter configuration. Available Values and Default Values tabs are marked as "None".
In some conditions, I don't want to send that parameter. But it wont allow. What else am I missing?