Monday 1 December 2014

How To Remove Duplicate Values From ListBox Without Using DataBase in Asp.net C#

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        Remove Duplicate Values  From ListBox 


Remove  Duplicate Values two ListBoxes  Using Without  Database Connection in Asp.net C#

Foreach  & if Conditions  Using  Remove Duplicate Values.



                      DEMO




First  Add - New - Webform 







Html Coding



<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body style="height: 243px">
    <form id="form1" runat="server">
    <div>
   
        <asp:ListBox ID="ListBox1" runat="server" Height="104px" OnSelectedIndexChanged="ListBox1_SelectedIndexChanged" Width="95px">

            <asp:ListItem>AAA</asp:ListItem>
            <asp:ListItem>BBB</asp:ListItem>
            <asp:ListItem>CCC</asp:ListItem>
            <asp:ListItem>DDD</asp:ListItem>

        </asp:ListBox>


  <asp:ListBox ID="ListBox2" runat="server" Height="142px" Width="110px" >

            <asp:ListItem>AAA</asp:ListItem>
            <asp:ListItem>BBB</asp:ListItem>
            <asp:ListItem>CCC</asp:ListItem>
            <asp:ListItem>DDD</asp:ListItem>
            <asp:ListItem>EEE</asp:ListItem>
            <asp:ListItem>FFF</asp:ListItem>
            <asp:ListItem>GGG</asp:ListItem>
            <asp:ListItem>EEE</asp:ListItem>

        </asp:ListBox>
    
     
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Remove Duplicates" />
   
    </div>
    </form>
</body>


</html>


C# Coding


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

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void Button1_Click(object sender, EventArgs e)
    {



        foreach (ListItem LISTBOXES in ListBox1.Items)
        {

            if (ListBox2.Items.Contains(LISTBOXES) == true)
            {

                ListBox2.Items.Remove(LISTBOXES);

            }

        }



    }



}








































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