Create Inbox like Gmail Inbox using Gridview in asp.net with c#

Inbox.aspx




<%@ Page Title="" Language="C#" MasterPageFile="~/Marketing/admin.master" EnableEventValidation="true"
    AutoEventWireup="true" CodeFile="Inbox.aspx.cs" Inherits="Marketing_Default2" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <input id="hdndranch" runat="server" type="hidden" />
    <input id="hdnmanager" runat="server" type="hidden" />
    <table align="center" class="ad_txt_border" width="700">
        <tr>
            <td bgcolor="#3399FF" class="ad_head" style="height: 20px" width="20">
                <img id="IMG1" src="../images/download_arrow_icon.gif" />Inbox
            </td>
            <td bgcolor="#3399FF" class="ad_head" style="height: 20px">
            </td>
        </tr>
        <tr>
            <td bgcolor="" class="ad_head" style="height: 20px" width="20">
                <td bgcolor="" class="ad_head" style="height: 20px">
                </td>
        </tr>
        <tr>
            <td class="txt" colspan="2">
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="100%"
                    DataKeyNames="Id" BackColor="WhiteSmoke" OnRowDataBound="GridView1_RowDataBound">
                    <Columns>
                        <asp:TemplateField HeaderText="" HeaderStyle-BackColor="#3399FF">
                            <ItemTemplate>
                                <asp:Label ID="lblfrom" runat="server" Text='<%# Eval("MailFrom") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="" HeaderStyle-BackColor="#3399FF">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkButton1" Font-Underline="false" runat="server" CommandName='<%# Eval("Id") %>'
                                    Text='<%# Eval("Subject") %>' OnCommand="TabChange"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="" HeaderStyle-BackColor="#3399FF">
                            <ItemTemplate>
                                <asp:Label ID="lblstatus" runat="server" Visible="false" Text='<%# Eval("status") %>'></asp:Label>
                                <asp:Label ID="lblfname" runat="server" Visible="false" Text='<%# Eval("Filename") %>'></asp:Label>
                                <asp:Image ID="imgattach" ImageUrl="~/images/paperclip.gif" runat="server" />
                            </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                </asp:GridView>
                <asp:MultiView ID="MultiView1" runat="server" Visible="false">
                    <asp:View ID="View1" runat="server">
                        <asp:Table ID="Table2" runat="server" BorderWidth="1" Width="100%">
                            <asp:TableRow>
                                <asp:TableCell>
                                    <asp:Image ID="Image1" ImageUrl="~/images/star_off_sm_2.gif" runat="server" />
                                    <asp:TextBox ID="txtfrom" BorderStyle="None" Width="500px" Text="Renju John <renjujohn.2@gmail.com>"
                                        runat="server"></asp:TextBox>
                                    &nbsp;&nbsp;
                                    <asp:TextBox ID="txtdate" BorderStyle="None" Width="500px" Text="Wed, Jul 18, 2012 at 4:28 PM"
                                        runat="server"></asp:TextBox>
                                    <br />
                                    To:
                                    <asp:TextBox ID="txtto" BorderStyle="None" Text="suni <sunichand2000@gmail.com>"
                                        Width="500px" runat="server"></asp:TextBox>
                                    <br />
                                    <asp:LinkButton ID="lbreply" runat="server">Reply</asp:LinkButton>
                                    &nbsp;&nbsp;
                                    <asp:LinkButton ID="lbdelete" OnCommand="delete_click" runat="server">Delete</asp:LinkButton>
                                    &nbsp;&nbsp;
                                    <asp:LinkButton ID="lbinbox" OnCommand="inbox_click" runat="server">Inbox</asp:LinkButton>
                                    &nbsp;&nbsp;
                                    <br />
                                    <asp:TextBox ID="txtbody" BorderStyle="None" TextMode="MultiLine" Width="700px" Height="200px"
                                        runat="server"></asp:TextBox>
                                    <br />
                                    <asp:Label ID="lblattach" runat="server" Text="Label" Visible="false"></asp:Label>
                                    &nbsp;&nbsp;
                                    <asp:HyperLink ID="hldownload" runat="server" Visible="false">Download</asp:HyperLink>
                                    &nbsp;&nbsp;
                                    <asp:HyperLink ID="hlview" runat="server" Visible="false">View</asp:HyperLink>
                                    &nbsp;&nbsp;
                                    <br />
                                    <br />
                                </asp:TableCell>
                            </asp:TableRow>
                        </asp:Table>
                    </asp:View>
                </asp:MultiView>
            </td>
        </tr>
    </table>
</asp:Content>

Inbox.aspx.cs

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.Web.Mail;
using System.IO;
using System.Drawing;
using System.Diagnostics;



public partial class Marketing_Default2 : System.Web.UI.Page
{
    Class1 cls = new Class1();
    int cid;
    connectionClass.connectionClass db = new connectionClass.connectionClass();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            hdndranch.Value = Request.QueryString["branch"].ToString();
            hdnmanager.Value = Request.QueryString["manager"].ToString();

            gridbind();
        }
    }
    public void gridbind()
    {
        if (cls.con.State == ConnectionState.Closed)
        {
            cls.con.Open();
        }

        SqlDataAdapter da = new SqlDataAdapter("select * from mail where ToType='Marketing Desk'", cls.con);
        DataSet ds = new DataSet();
        da.Fill(ds);
        GridView1.DataSource = ds;
        GridView1.DataBind();
        foreach (GridViewRow row in GridView1.Rows)
        {
            Label lblstatus = (Label)row.FindControl("lblstatus");
            Label lblfname = (Label)row.FindControl("lblfname");
            System.Web.UI.WebControls.Image imgattach = (System.Web.UI.WebControls.Image)row.FindControl("imgattach");        
            if (lblstatus.Text == "False")
            {
                row.BackColor = System.Drawing.Color.White;
            }
            else
            {
                row.BackColor = System.Drawing.Color.Gray;
            }
            if (lblfname.Text == "")
            {            
                imgattach.Visible = false;
            }
            else
            {
              
                imgattach.Visible = true;
            }

        }
    }
    protected void TabChange(object sender, CommandEventArgs e)
    {
        string id = e.CommandName;
        SqlDataAdapter da = new SqlDataAdapter("select * from mail where ToType='Marketing Desk' and id='" + id + "'", cls.con);
        DataSet ds = new DataSet();
        da.Fill(ds);
        LinkButton lb = (LinkButton)sender;
        if (lb.ID == "LinkButton1")
        {
            MultiView1.ActiveViewIndex = 0;
            MultiView1.Visible = true;
            txtfrom.Text = ds.Tables[0].Rows[0]["MailFrom"].ToString();
            txtto.Text = ds.Tables[0].Rows[0]["MailTo"].ToString();
            txtbody.Text = ds.Tables[0].Rows[0]["MailContent"].ToString();
            txtdate.Text = ds.Tables[0].Rows[0]["Date"].ToString();
            lbdelete.CommandArgument = id;
            if (ds.Tables[0].Rows[0]["Filename"].ToString() != "")
            {
                lblattach.Text = ds.Tables[0].Rows[0]["Filename"].ToString();
                lblattach.Visible = true;
                hldownload.Visible = true;
                hlview.Visible = true;
                hldownload.NavigateUrl = "~/Marketing/DownloadFile.aspx?Id="+id+"&branch=" + hdndranch.Value + "&manager=" + hdnmanager.Value;
                hlview.NavigateUrl = "~/Marketing/DownloadFile.aspx?Id="+id+"&branch=" + hdndranch.Value + "&manager=" + hdnmanager.Value;
            }

            GridView1.Visible = false;
            db.executeNonQuery("update mail set status='1' where id='" + id + "' and ToType='Marketing Desk'", cls.conStr);
            db.close();
        }
        else if (lb.ID == "LinkButton2")
        {
            MultiView1.ActiveViewIndex = 1;
        }
        else if (lb.ID == "LinkButton3")
        {
            MultiView1.ActiveViewIndex = 2;
        }
    }
    public void delete_click(object sender, System.Web.UI.WebControls.CommandEventArgs e)
    {
        try
        {
            int id = Convert.ToInt16(e.CommandArgument);
            db.executeNonQuery("delete from mail where id='" + id + "' and ToType='Marketing Desk'", cls.conStr);
            db.close();
            gridbind();
        }
        catch (Exception ex)
        {
        }
    }
    public void inbox_click(object sender, System.Web.UI.WebControls.CommandEventArgs e)
    {
        try
        {
            GridView1.Visible = true;
            MultiView1.Visible = false;
        }
        catch (Exception ex)
        {
        }
    }
 
    protected void chkSelect_CheckedChanged(object sender, EventArgs e)
    {
        CheckBox chkTest = (CheckBox)sender;
        GridViewRow grdRow = (GridViewRow)chkTest.NamingContainer;
        grdRow.BackColor = Color.Red;
        Label lblfrom = (Label)grdRow.FindControl("lblfrom");
        Label lblto = (Label)grdRow.FindControl("lblto");
        if (chkTest.Checked)
        {
          
            lblfrom.ForeColor = System.Drawing.Color.Black;
            lblto.ForeColor = System.Drawing.Color.Black;
        }
        else
        {
            grdRow.BackColor = Color.White;
          
            lblfrom.ForeColor = System.Drawing.Color.Blue;
            lblto.ForeColor = System.Drawing.Color.Blue;
        }
    }
    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    {
        foreach (GridViewRow rs in GridView1.Rows)
        {
            CheckBox chkUncheck = (CheckBox)
                        rs.FindControl("chkSelect");
            if (chkUncheck.Checked)
            { chkUncheck.Checked = false; }
            else
            { chkUncheck.Checked = true; }
        }
    }
 
 
}