Asp.net remove selected item from dropdownlist

In this article I am going to explain how to remove the selected item from dropdownlist in asp.net using C#, VB.net

In the previous article I have explained how to show the data in Gridview clientside using Jquery, Json and Ajax and how to populate Category and Sub-categoryin single dropdownlist in Asp.net.

Implementation:

HTML Markup:

<asp:DropDownList ID="ddlItems" runat="server" AutoPostBack="True" CssClass="dropdownlist" onselectedindexchanged="ddlItems_SelectedIndexChanged">

         <asp:ListItem Selected="True" Value="-1">--Select Item--</asp:ListItem>

            <asp:ListItem>Item 1</asp:ListItem>

            <asp:ListItem>Item 2</asp:ListItem>

            <asp:ListItem>Item 3</asp:ListItem>

            <asp:ListItem>Item 4</asp:ListItem>

            <asp:ListItem>Item 5</asp:ListItem>             

        </asp:DropDownList>

Write the below given code on SelectIndexchanged event of Dropdownlist

C# code:

protected void ddlItems_SelectedIndexChanged(object sender, EventArgs e)

    {

        ddlItems.Items.FindByText(ddlItems.SelectedItem.Text).Enabled = false;

    }

VB.net Code:

Protected Sub ddlItems_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles ddlItems.SelectedIndexChanged

        ddlItems.Items.FindByText(ddlItems.SelectedItem.Text).Enabled = False

    End Sub