insert edit delete by using gridview

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good evening,

i am doing insert,edit delete by using gridview.

my aspx code id

C#

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView2.aspx.cs" Inherits="GridView2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="btnadd" runat="server" Text="Add" onclick="btnadd_Click" />

         <asp:GridView ID="gv" runat="server" AutoGenerateColumns="false" 
            onrowdeleting="gv_RowDeleting" onrowediting="gv_RowEditing" 
            onrowupdating="gv_RowUpdating" onselectedindexchanged="gv_SelectedIndexChanged">

        <columns>

        <asp:TemplateField HeaderText="ID">
        <itemtemplate>
            <asp:Label ID="lblid" runat="server" Text='<%# Eval("ID") %>'>
            
        </itemtemplate>
        

        <asp:TemplateField HeaderText="Firstname">
        <itemtemplate>
            <asp:Label ID="lblfirstname" runat="server" Text='<%# Eval("firstname") %>'>
            
        </itemtemplate>
        <edititemtemplate>
            <asp:TextBox ID="txtfirstname" runat="server" Text='<%# Eval("firstname") %>'>
            
        </edititemtemplate>
        

         <asp:TemplateField HeaderText="Lastname">
        <itemtemplate>
            <asp:Label ID="lbllastname" runat="server" Text='<%# Eval("lastname") %>'>
            
        </itemtemplate>
        <edititemtemplate>
            <asp:TextBox ID="txtlastname" runat="server" Text='<%# Eval("lastname") %>'>
            
        </edititemtemplate>
        

        <asp:TemplateField>
            <itemtemplate>
                <asp:LinkButton ID="lbedit" runat="server" CommandName="Edit">Edit
                <asp:LinkButton ID="lbdelete" runat="server" CommandName="Delete">Delete
            </itemtemplate>
            <edititemtemplate>
            <asp:LinkButton ID="lbupdate" runat="server" CommandName="Update">Update
            <asp:LinkButton ID="lbcancel" runat="server" CommandName="Cancel">Cancel
            </edititemtemplate>
            

        </columns>

        
    </div>
    </form>
</body>
</html>

and my .cs code is

C#

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.Odbc;

public partial class GridView2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Bind();
        }
    }

    public void Bind()
    {
        OdbcConnection con = new OdbcConnection("Driver={Mysql ODBC 5.1 Driver};server=AFFINEWSDB01;database=training;uid=trainee;password=trainee;");
        con.Open();
        OdbcCommand cmd = new OdbcCommand("select * from add2", con);
        OdbcDataAdapter da = new OdbcDataAdapter(cmd);
        DataTable dt = new DataTable();
        da.Fill(dt);
        gv.DataSource = dt;
        gv.DataBind();
        con.Close();
    }

    protected void btnadd_Click(object sender, EventArgs e)
    {
        Response.Redirect("Add.aspx");
    }

    protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
    {
        gv.EditIndex = e.NewEditIndex;
        Bind();
    }
    public void UpdateData(string firstname, string lastname)
    {
        OdbcConnection con = new OdbcConnection("Driver={Mysql ODBC 5.1 Driver};server=AFFINEWSDB01;database=training;uid=trainee;password=trainee;");
        con.Open();
        OdbcCommand cmd = new OdbcCommand("update add2 set Firstname='" + firstname + "'", con);
        cmd.ExecuteNonQuery();
        Bind();
        con.Close();
    }

    protected void gv_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        OdbcConnection con = new OdbcConnection("Driver={Mysql ODBC 5.1 Driver};server=AFFINEWSDB01;database=training;uid=trainee;password=trainee;");
        con.Open();
        string firstName = gv.DataKeys[e.RowIndex].Value.ToString();
        GridViewRow row = gv.Rows[e.RowIndex];
        TextBox lastname = (TextBox)row.FindControl("txtlastname");
        UpdateData(firstName, lastname.Text);
        con.Close();
    }

    protected void gv_RowCancellingedit(object sender, GridViewCancelEditEventArgs e)
    {
        gv.EditIndex = -1;
        Bind();
    }



    public void DeleteDate(int id, string firstname, string lastname)
    {
        OdbcConnection con = new OdbcConnection("Driver={Mysql ODBC 5.1 Driver};server=AFFINEWSDB01;database=training;uid=trainee;password=trainee;");
        con.Open();
        OdbcCommand cmd = new OdbcCommand("delete from add2 where ID='" + id + "'", con);
        cmd.ExecuteNonQuery();
        Bind();
        con.Close();
    }

    protected void gv_SelectedIndexChanged(object sender, EventArgs e)
    {
    }

    protected void gv_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        OdbcConnection con = new OdbcConnection("Driver={Mysql ODBC 5.1 Driver};server=AFFINEWSDB01;database=training;uid=trainee;password=trainee;");
        con.Open();
        string firstName = gv.DataKeys[e.AffectedRows].Value.ToString();
        GridViewRow row = gv.Rows[e.AffectedRows];
        OdbcCommand cmd = new OdbcCommand("delete from add2 where Firstname='" + firstName + "' ", con);
        cmd.ExecuteNonQuery();
        Bind();
        con.Close();
    }
}

my gridview is binding but edit and delete operations are not working.

please help me.

Posted 8-May-13 1:37am

Member 9567873

Updated 8-May-13 2:00am

vijay__p

v3

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Comments

Aarti Meswania 8-May-13 8:13am

first put debug point in gv_RowDeleting and updating Events.
check it fired or not

2 solutions

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KM Perumal · Answer 1 · 2013-05-08T02:25:00

Solution 2

C#

cmd = new MySqlCommand("delete from add2 where ID=@id", con);
            // Adding the parameter for deleting the record.
            cmd.Parameters.AddWithValue("@id", GridView1.Rows[e.RowIndex].Cells[Change Indexof ID Colunm ].Text);

Posted 8-May-13 2:25am

KM Perumal

Murali0195 · Answer 2 · 2013-05-08T01:47:00

Solution 1

Hi...

See in your delete() use like blow.

C#

cmd = new MySqlCommand("delete from add2 where ID=@id", con);
            // Adding the parameter for deleting the record.
            cmd.Parameters.AddWithValue("@id", GridView1.Rows[e.RowIndex].Cells[1].Text);

and for edit() like this

gv.EditIndex = e.NewEditIndex;

its may helpful for u.
thank u.

Posted 8-May-13 1:47am

Murali0195

Comments

Member 9567873 8-May-13 8:06am

i have changed the code as you said but then also it is not working