Insert, Update and Delete data in GridView using the SQL Database

This article helps you to insert the data in gridview, which performs several operations like, inserting, updating and deleting records from DB.

Insert, Update and Delete data in GridView using the SQL Database

Code Behind Code is as follows:-

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

public partial class Default2 : System.Web.UI.Page
{
    SqlConnection con = new SqlConnection("server=.;database=db;uid=sa;pwd=wintellect");
    SqlDataAdapter
da;
    SqlCommand
cmd;
    DataSet
ds = new DataSet();
    SqlDataReader
dr;
    protected
void Page_Load(object sender, EventArgs e)
    {
      if (!IsPostBack)
      {
       show();
      }
    }
    public
void show()
    {
      da = new SqlDataAdapter("select * from employee", con);
      da.Fill(ds);
      GridView1.DataSource = ds;
      GridView1.DataBind();
     }
}

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Code for Inserting Records:-


protected void Button1_Click(object sender, EventArgs e)
{
    string
str = "insert into employee values(@emp_id,@emp_name,@emp_salary)";
    cmd = new SqlCommand(str, con);
    cmd.Parameters.AddWithValue("@emp_id", TextBox1.Text);
    cmd.Parameters.AddWithValue("@emp_name", TextBox2.Text);
    cmd.Parameters.AddWithValue("@emp_salary", TextBox3.Text);
    con.Open();
    cmd.ExecuteNonQuery();
    con.Close();
    show();
    Response.Write("Record Inserted");
}

Code for Updating Records:-

protected void Button2_Click(object sender, EventArgs e)
{
    string
str = "update employee set emp_name=@emp_name,emp_salary=@emp_salary where emp_id=@emp_id";
    cmd = new SqlCommand(str, con);
    cmd.Parameters.AddWithValue("@emp_id", TextBox1.Text);
    cmd.Parameters.AddWithValue("@emp_name", TextBox2.Text);
    cmd.Parameters.AddWithValue("@emp_salary", TextBox3.Text);
    con.Open();
    dr = cmd.ExecuteReader();
    con.Close();
    show();
    Response.Write("Record Updated");
}

 

Code for Deleting Records:-

protected void Button3_Click(object sender, EventArgs e)
{
    string
str = "delete from employee where emp_id=@emp_id";
    cmd = new SqlCommand(str, con);
    cmd.Parameters.AddWithValue("@emp_id", TextBox1.Text);
    con.Open();
    dr = cmd.ExecuteReader();
    con.Close();
    show();
    Response.Write("Record Deleted");
}

 

Hope, this article helps for beginners. J

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