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Stored procedure example

//Stored procedure example
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;
namespace killercodes_in.StoredProcedure
{
public partial class Form1 : Form
{
public string _connStr_ = "Data Source=127.0.0.1,1433;Initial Catalog=avyukta;User Id=sa;Password=iamadmin;";
SqlCommand cmd;
SqlConnection conn;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
SqlDataAdapter sda;
SqlCommand cmd = new SqlCommand();
SqlParameter param;
DataSet ds = new DataSet();
int i = 0;
conn = new SqlConnection(_connStr_);
conn.Open();
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "Grade";
sda = new SqlDataAdapter(cmd);
sda.Fill(ds);
for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
MessageBox.Show(ds.Tables[0].Rows[i][0].ToString());
}
conn.Close();
}
}
}