Redirect to different page based on DropDownList selection using C# and VB.Net in ASP.Net

Hi indradeo,

Refer below code.

HTML

<asp:DropDownList runat="server" ID="ddlItems">
    <asp:ListItem Text="Select" Value="0" />
    <asp:ListItem Text="upl" Value="upl" />
    <asp:ListItem Text="emg" Value="emg" />
    <asp:ListItem Text="Cisf" Value="Cisf" />
</asp:DropDownList>
<br />
<asp:Button Text="Login" runat="server" OnClick="OnLogin" />

Code

C#

protected void OnLogin(object sender, EventArgs e)
{
    // Login validation code.
    switch (ddlItems.SelectedItem.Text.Trim().ToLower())
    {
        case "upl":
            Response.Redirect("upl.aspx");
            break;
        case "emg":
            Response.Redirect("emg.aspx");
            break;
        case "cisf":
            Response.Redirect("cisf.aspx");
            break;
        default:
            break;
    }
}

VB.Net

Protected Sub OnLogin(ByVal sender As Object, ByVal e As EventArgs)
    ' Login validation code.
    Select Case ddlItems.SelectedItem.Text.Trim().ToLower()
        Case "upl"
            Response.Redirect("upl.aspx")
        Case "emg"
            Response.Redirect("emg.aspx")
        Case "cisf"
            Response.Redirect("cisf.aspx")
        Case Else
    End Select
End Sub