Change color of previous selected item in ASP.Net DropDownList

Hi Neda,

I Support Mr. Mudassar,

However if you need at any cost, any how the choice is as follow

<div>
            <asp:ScriptManager runat="server" />
            <asp:UpdatePanel runat="server">
                <ContentTemplate>
                    <asp:DropDownList runat="server" ID="ddl1" OnSelectedIndexChanged="ddl1_SelectedIndexChanged" AutoPostBack="true" ForeColor="Red">
                        <asp:ListItem Text="-- Please select --" />
                        <asp:ListItem Text="Solid State Physics" />
                        <asp:ListItem Text="Electronics" />
                        <asp:ListItem Text="Nuclear Physics" />
                        <asp:ListItem Text="The Theary of Relativity" />
                    </asp:DropDownList>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>

.CS

 protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                this.SetDropDownDefaulColor();
            }
        }

        protected void ddl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.SetDropDownDefaulColor();
            ddl1.SelectedItem.Attributes.CssStyle.Add("color", "red");
        }

        private void SetDropDownDefaulColor() 
        {
            foreach (ListItem item in ddl1.Items)
            {
                item.Attributes.CssStyle.Add("color", "black");
            }
        }

Thanks and Regards,

Rk_Hirpara