Passing Blank Field Value To Stored Procedure C#?
Feb 21, 2011
I want to return all rows from a SQL Server 2008 database table into a SQL data source if a textBox field is blank. So I made a stored procedure with an if @date IS NULL clause.
Although the stored procedure seems to be working fine in Visual Studio 2008 the actual webpage displays no results.
I am guessing I have to send a DBNull value to the stored proc if textBox.Text == string.Empty. I tried the SqlDataSource1.SelectParameters.Add but it seems that I get a conversion error from DBNull.Value to string.
Is this the source of my problems or am I missing something else? How would I pass DBNull.Value to a stored proc if a textfield is blank?
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