Help with Parameterizing SQL Query for C# with possible null values

Posted by Jhonny D. Cano -Leftware- on Stack Overflow See other posts from Stack Overflow or by Jhonny D. Cano -Leftware-
Published on 2010-06-03T22:01:25Z Indexed on 2010/06/03 22:04 UTC
Read the original article Hit count: 170

Filed under:
|
|

Hello, people.

I need help with parameterizing this query.

SELECT * 
FROM greatTable 
WHERE field1 = @field1
AND field2 = @field2

The user should be able to search for any of the 2 fields, and the user also should be able to search if the field2 has null values.

var query = "theQuery";
var cm = new SqlCommand(cn, query);

cm.AddParameter("@field1", "352515");
cm.AddParameter("@field2", DBNull.Value);

// my DataTable here is having 0 records
var dt = GetTable(cm);

© Stack Overflow or respective owner

Related posts about c#

Related posts about sql