populating dropdown list based on the checkbox...

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populating dropdown list based on the checkbox... checked is true populating data in a one table,is checked is false populating data in a another table

thnks

Posted 25-Sep-12 22:50pm

rosren

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Santhosh Kumar Jayaraman · Answer 1 · 2012-09-25T23:03:00

in the checkbox selection changed event

C#

if (chkbox.Checked==true)
    {
           ddlCity.DataSource=datatable1;
           ddlCity.DisplayMember="Name";
           ddlCity.DataBind();
    }
else
    {
          ddlCity.DataSource=alternatedatatable;
          ddlCity.DisplayMember=&quot;Name&quot;;
          ddlCity.DataBind();
    }

__PP__ · Answer 2 · 2012-09-26T00:29:00

You can done this in following ways:

webform1.aspx

XML

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="popddl.aspx.cs" Inherits="Ajax_sample.popddl" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<!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>
    <ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1"
  runat="server"></ajaxToolkit:ToolkitScriptManager>

        <asp:UpdatePanel ID="updatepanel1" runat="server">
            <ContentTemplate>
                <asp:TextBox ID="TextBox1" runat="server"


                    style="top: 152px; left: 354px; position: absolute; height: 22px; width: 128px"></asp:TextBox><asp:Button ID ="Button1" runat ="server" Text ="Save" />


              <ajaxToolkit:PopupControlExtender ID="TextBox1_PopupControlExtender" runat="server" DynamicServicePath=""
                    Enabled="True" ExtenderControlID="" TargetControlID="TextBox1" PopupControlID="Panel1"
                    OffsetY="22"></ajaxToolkit:PopupControlExtender>

                <asp:Panel ID="Panel1" runat="server" Height="116px" Width="145px" BorderStyle="Solid"
                    BorderWidth="2px" Direction="LeftToRight" ScrollBars="Auto" BackColor="#CCCCCC"
                    Style="display: none">
                    <asp:CheckBoxList ID="CheckBoxList1" runat="server" DataSourceID="SqlDataSource1" AutoPostBack="True" DataTextField ="Name"  OnSelectedIndexChanged  = "CheckBoxList1_SelectedIndexChanged"  >
                  </asp:CheckBoxList>

                                 </asp:Panel>
            </ContentTemplate>
        </asp:UpdatePanel> <asp:SqlDataSource ID="SqlDataSource1" runat="server"
        ConnectionString="<%$ ConnectionStrings:scriptConnectionString %>"
        SelectCommand="SELECT [Name] FROM [Table1]"></asp:SqlDataSource>

    </div>

    <p>

    <asp:Button ID ="b1" runat ="server" Text ="Save" onclick="b1_Click"
            style="top: 151px; left: 514px; position: absolute; height: 26px; width: 42px" />
    </p>

    </form>

    </body>
</html>

webform1.aspx.cs

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.SqlClient;

namespace Ajax_sample
{
    public partial class popddl : System.Web.UI.Page
    {
        SqlConnection sqlcon = new SqlConnection("User ID=sa;Password=Mobius@123;Data Source=MOB-PERLZ-WS192;Initial Catalog=script");
        protected void Page_Load(object sender, EventArgs e)
        {

        }
       

        protected void b1_Click(object sender, EventArgs e)
        {
            sqlcon.Open();
            // string name = "";
            for (int i = 0; i < CheckBoxList1.Items.Count; i++)
            {
                if (CheckBoxList1.Items[i].Selected)
                {

                    //Create the insert query
                    SqlCommand sqlcmd = new SqlCommand("insert into Checked_Items values('" + CheckBoxList1.Items[i].Text + "')", sqlcon);
                    sqlcmd.ExecuteNonQuery();
                }
                else
                {
                    SqlCommand sqlcmd1 = new SqlCommand("insert into UnChecked_Items values('" + CheckBoxList1.Items[i].Text + "')", sqlcon);
                    sqlcmd1.ExecuteNonQuery();
                }
            }
            sqlcon.Close();
            Response.Write("Saved Successfully");

        }
        protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string name = "";
            for (int i = 0; i < CheckBoxList1.Items.Count; i++)
            {
                if (CheckBoxList1.Items[i].Selected)
                {
                    name += CheckBoxList1.Items[i].Text + ",";
                }
            }
            TextBox1.Text = name;
        }
    }
}

populating dropdown list based on the checkbox...

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