Move listbox Items In Asp.net from one to Another

Move listbox Items In Asp.net from one to Another

Step 1 : Design .ASPX page

Here In Design  part ,I am define two Listbox and two Button for left and right.

   <form id="form1" runat="server">

        <div>

            <table>

                <tr>

                    <td colspan="3"></td>

                </tr>

                <tr>

                    <td>

                        <asp:ListBox ID="ListBox1" runat="server" Width="150px" Height="200px" SelectionMode="Multiple"></asp:ListBox>

                    </td>

                    <td>

                        <asp:Button ID="btnryt" runat="server" Text="Move Reight" OnClick="btnryt_Click" />

                        <asp:Button ID="btnLeft" runat="server" Text="Move Left" OnClick="btnLeft_Click" />

                    </td>

                    <td>

                        <asp:ListBox ID="ListBox2" runat="server" Width="150px" Height="200px" SelectionMode="Multiple"></asp:ListBox>

                    </td>

                </tr>

            </table>

        </div>

    </form>

Step 2 : Logic Part

        if (!Page.IsPostBack)

        {

           

            //Bind Some Items in ListBox1

            ListBox1.Items.Add("Kandy");

            ListBox1.Items.Add("Deol");

            ListBox1.Items.Add("Sam");

            ListBox1.Items.Add("Rahul");

            ListBox1.Items.Add("Joytismoy");

            ListBox1.Items.Add("HAnsa");

        }

//Logic for Move Items from Left to right.

    protected void btnryt_Click(object sender, EventArgs e)

    {

        for (int i = ListBox1.Items.Count - 1; i >= 0; i--)

        {

            if (ListBox1.Items[i].Selected == true)

            {

                ListBox2.Items.Add(ListBox1.Items[i]);

                ListItem li = ListBox1.Items[i];

                ListBox1.Items.Remove(li);

            }

        }

    }

    //Logic for Move Items from right to Left.

    protected void btnLeft_Click(object sender, EventArgs e)

    {

         for (int i = ListBox2.Items.Count - 1; i >= 0; i--)

         {

             if (ListBox2.Items[i].Selected == true)

             {

                 ListBox1.Items.Add(ListBox2.Items[i]);

                 ListItem li = ListBox2.Items[i];

                 ListBox2.Items.Remove(li);

             }

         }

    }

Finaly It will look like :