Sql Exception raised.

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SQL-Server-2008R2

code in dataaccesslayer

C#

public DataSet FindRecord(int RollNumber)
        {
            using (SqlConnection con = new SqlConnection(cs))
            {
                //string cmd = "Select * from tblstudent where RollNumber=@RollNumber";
                SqlCommand cmd = new SqlCommand("Select * from tblstudent where RollNumber=@RollNumber", con);
                cmd.Parameters.AddWithValue("@RollNumber", RollNumber);                
                SqlDataAdapter da = new SqlDataAdapter("spfindtblstudent", con);
                cmd.CommandType = CommandType.StoredProcedure;
                con.Open();
                DataSet ds = new DataSet();
                da.Fill(ds);
                con.Close();
                return ds;

            }

My stored procedure is

SQL

alter procedure spfindtblstudent
@RollNumber int
as
Begin
 Select * from tblstudent Where RollNumber=@RollNumber
 END

Posted 1-Nov-14 4:19am

raxhemanth

Updated 1-Nov-14 4:27am

Afzaal Ahmad Zeeshan

v2

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Mehdi Gholam 1-Nov-14 10:31am

... and what is the exception?

1 solution

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George Jonsson · Answer 1 · 2014-11-01T05:08:00

Looks like you are mixing between sending direct SQL commands and calling a stored procedure. Try to decide which one you want to use.

C#

public DataSet FindRecord(int RollNumber)
{
    using (SqlConnection con = new SqlConnection(cs))
    {
        //string cmd = "Select * from tblstudent where RollNumber=@RollNumber";
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = con;
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.CommandText = "spfindtblstudent";
        cmd.Parameters.AddWithValue("@RollNumber", RollNumber);
    
        con.Open();
    
        SqlDataAdapter da = new SqlDataAdapter()
        da.SelectCommand = cmd;
    
        DataSet ds = new DataSet();
        da.Fill(ds);
    
        return ds;
    }
}

As you don't specify your exact exception message, I can only guess that this is the problem.