error i got declare the scalar variable totalamt,Balance

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update tbl_OpdClaim set totalamt=(@totalamt ),Balance =(@Balance ) where userid='" + txtUserId.Text + "'";

i got this error Error: 'Must declare the scalar variable i am not getting what's wrong plz help me

Posted 20-May-11 19:28pm

invisible@123

Updated 20-May-11 19:29pm

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OriginalGriff · Answer 1 · 2011-05-20T20:38:00

When you create the command, you must add the parameters with the values to it before it can execute:

SqlCommand com = new SqlCommand("UPDATE tbl_OpdClaim SET totalamt=(@totalamt ),Balance =(@Balance ) WHERE userid=@ID", con);
com.Paramaters.AddWithValue("@totalamt", myTotalAmount);
com.Paramaters.AddWithValue("@Balance", myNewBalance);
com.Paramaters.AddWithValue("@ID", txtUserId.Text);

Note also that you should parameterize you ID: concatenating strings like that is an invitation to an accidental or deliberate SQL Injection attack.

Mohd Wasif · Answer 2 · 2011-05-20T20:33:00

You have not passed the two parameter @totalamt,@Balance

for that you need to do some work as below.

C#

SqlCommand cmd = new SqlCommand("update tbl_OpdClaim set totalamt=(@totalamt ),Balance =(@Balance ) where userid='" + txtUserId.Text + "'", con);
        cmd.Parameters.AddWithValue("@totalamt", amountvalue);
        cmd.Parameters.AddWithValue("@Balance", balance);
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();

error i got declare the scalar variable totalamt,Balance

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