asp.net grid view edit and delete records - asp.net

Question

i am trying to use a grid view to display items from the database i also want to edit and delete these records then in the grid view, i am using the sample code on asp.net snippets
http://aspsnippets.com/Articles/Simple-Insert-Select-Edit-Update-and-Delete-in-ASPNet-GridView-control.aspx
it says that The name 'GetData' does not exist in the current context
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default10 : System.Web.UI.Page
{
SqlCommand comm;
string connectionString = ConfigurationManager.ConnectionStrings["DatabaseConnectionString1"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindData();
}
}
private void BindData()
{
comm = new SqlCommand("select EmployeeID,Name,Password" +
" from Employee");
GridView1.DataSource = GetData(comm);
GridView1.DataBind();
}
protected void EditEmployee(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindData();
}
protected void CancelEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
BindData();
}
protected void UpdateEmployee(object sender, GridViewUpdateEventArgs e)
{
string EmployeeID = ((Label)GridView1.Rows[e.RowIndex]
.FindControl("lblEmployeeID")).Text;
string Name = ((TextBox)GridView1.Rows[e.RowIndex]
.FindControl("txtName")).Text;
string Password = ((TextBox)GridView1.Rows[e.RowIndex]
.FindControl("txtPassword")).Text;
comm = new SqlCommand();
comm.CommandType = CommandType.Text;
comm.CommandText = "update Employee set Name=#Name," +
"Password=#Password where EmployeeID=#EmployeeID;" +
"select EmployeeID,Name,Password from Employee";
comm.Parameters.Add("#EmployeeID", SqlDbType.VarChar).Value = EmployeeID;
comm.Parameters.Add("#Name", SqlDbType.VarChar).Value = Name;
comm.Parameters.Add("#Password", SqlDbType.VarChar).Value = Password;
GridView1.EditIndex = -1;
GridView1.DataSource = GetData(comm);
GridView1.DataBind();
}
protected void DeleteEmployee(object sender, EventArgs e)
{
LinkButton lnkRemove = (LinkButton)sender;
comm = new SqlCommand();
comm.CommandType = CommandType.Text;
comm.CommandText = "delete from Employee where " +
"EmployeeID=#EmployeeID;" +
"select EmployeeID,Name,Password from Employee";
comm.Parameters.Add("#EmployeeID", SqlDbType.VarChar).Value
= lnkRemove.CommandArgument;
GridView1.DataSource = GetData(comm);
GridView1.DataBind();
}
}

Answer 1

You are using Old coding so Replace your code with my code..
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default10 : System.Web.UI.Page
{
SqlCommand comm;
SqlConnection connectionString = ConfigurationManager.ConnectionStrings["DatabaseConnectionString1"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindData();
}
}
private void BindData()
{
connectionString.Open();
comm = new SqlCommand("select EmployeeID,Name,Password from Employee", connectionString);
DataTable dt =new DataTable();
SqlDataAdapter adp= new SqlDataAdapter(comm);
adp.Fill(dt);
connectionString.Close();
GridView1.DataSource =dt;
GridView1.DataBind();
}
protected void EditEmployee(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindData();
}
protected void CancelEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
BindData();
}
//you should Write this code on Rowupdating and give command name 'update' to link button
protected void UpdateEmployee(object sender, GridViewUpdateEventArgs e)
{
//start here
string EmployeeID = ((Label)GridView1.Rows[e.RowIndex]
.FindControl("lblEmployeeID")).Text;
string Name = ((TextBox)GridView1.Rows[e.RowIndex]
.FindControl("txtName")).Text;
string Password = ((TextBox)GridView1.Rows[e.RowIndex]
.FindControl("txtPassword")).Text;
connectionString.Open();
comm = new SqlCommand("update Employee set Name=#Name,Password=#Password where EmployeeID=#EmployeeID", connectionString);
comm.Parameters.AddWithValue("#EmployeeID", EmployeeID);
comm.Parameters.AddWithValue("#Name", Name);
comm.Parameters.AddWithValue("#Password", Password);
comm.ExecuteNonQuery();
connectionString.Close();
GridView1.EditIndex = -1;
BindData();
//end here
}
//you should Write this code on RowDeleting and give command name 'delete' to link button
protected void DeleteEmployee(object sender, EventArgs e)
{
//stat here
string EmployeeID = ((Label)GridView1.Rows[e.RowIndex]
.FindControl("lblEmployeeID")).Text;
connectionString.Open();
comm = new SqlCommand("delete from Employee where EmployeeID=#EmployeeID", connectionString);
comm.Parameters.AddWithValue("#EmployeeID", lnkRemove);
comm.ExecuteNonQuery();
connectionString.Close();
BindData();
//end here
}
}