DBNull if statement

Question

I\'m trying to execute a stored procedure and then use an if statement to check for null values and I\'m coming up short. I\'m a VB guy so please bear with me if I\'m making

Answer 1

This should work.

if (rsData["usr.ursrdaystime"] != System.DBNull.Value))
{
    strLevel = rsData["usr.ursrdaystime"].ToString();
}

also need to add using statement, like bellow:

using (var objConn = new SqlConnection(strConnection))
     {
        objConn.Open();
        using (var objCmd = new SqlCommand(strSQL, objConn))
        {
           using (var rsData = objCmd.ExecuteReader())
           {
              while (rsData.Read())
              {
                 if (rsData["usr.ursrdaystime"] != System.DBNull.Value)
                 {
                    strLevel = rsData["usr.ursrdaystime"].ToString();
                 }
              }
           }
        }
     }

this'll automaticly dispose (close) resources outside of block { .. }.

Answer 2

Yes, just a syntax problem. Try this instead:

if (reader["usr.ursrdaystime"] != DBNull.Value)

.Equals() is checking to see if two Object instances are the same.

Answer 3

The closest equivalent to your VB would be (see this):

Convert.IsDBNull()

But there are a number of ways to do this, and most are linked from here