Question

I have created a few stored functions in SQL Server that return a table via a select statement. Like so:

CREATE FUNCTION [dbo].[mFunSelectStudents] ()
RETURNS @result TABLE
    (IDStudent int, 
     Name nchar(50),
     Password nchar(50))
AS 
BEGIN
    INSERT INTO @result select * from School.dbo.Student
    RETURN    
END

I tried to assign the function to an SqlDataAdapter in c# like this:

SqlCommand cmd = new SqlCommand("mFunSelectStudents", con);
SqlDataAdapter adpStudents = new SqlDataAdapter();
adpStudents.SelectCommand = cmd;

But this doesn’t work..

Where @result is a return parameter of the stored function. Now, how do I call the function in C# and assign the data to a grid ?

Any help is appreciated..

Answer 1

The command cannot be just the name of the function. You are supposed to put a SQL command there, and in SQL one retrieves data from a TVF by SELECTing from it, like this:

SELECT * FROM dbo.mFunSelectStudents()

Consequently, the first line of your C# code snippet should be:

SqlCommand cmd = new SqlCommand("SELECT * FROM dbo.mFunSelectStudents()", con);