I am trying to read a parameter from the URL into my module.  When it exists: "module.aspx?ID=1" it works fine but when there is nothing: "module.aspx" i get an error:
DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.

The line that it has a problem with is:
string queryID = Request.QueryString["ID"].ToString();

Thanks,

Hi

You need to check the query string is exist or not before converting it to string to avoid the error.

if(Request.QueryString["ID"] != string.Empty)
{
string queryID = Request.QueryString["ID"].ToString();
}

Thanks
Sibabrata Dash
www.mindfiresolutions.com