Question

i have a SQL query as follows

  String S = Editor1.Content.ToString();
     Response.Write(S);   
    string sql = "insert into testcase.ishan(nmae,orders) VALUES ('9',@S)";
   OdbcCommand cmd = new OdbcCommand(sql, myConn);
            cmd.Parameters.AddWithValue("@S", S); 
            cmd.ExecuteNonQuery();

Error: Column 'orders' cannot be null at System.Data.Odbc.OdbcConnection.HandleError

Answer 1

Better to use something like:

var sqlCommandText = "insert into testcase.ishan(nmae,orders) VALUES ('9', @S)";
using (var connection = new SqlConnection())
{
    using (var command = new SqlCommand(sqlCommandText , connection))
    {
        command.Parameters.AddWithValue("@S", S);
        command.ExecuteNonQuery();
    }
}

The use of parameters prevents SQL injection. Andrews solution does not, I believe.

ExecuteNonQuery() will return the number of rows affected, if you need it.

The using statements will take care of disposing the connection properly, so afterwards, you have no open connections anymore. This is because SqlConnection implements IDisposable.