在asp.net中动态更新linkbutton文本

Question

I am trying to change the text for the link-button dynamically based on if the user is logged in or not. The text should be Log-out if user is logged in and vice versa. It is always showing Login. I am not sure what I am doing wrong here.

 <p><asp:LinkButton ID="MyLnkButton" runat="server" EnableViewState = "False" onClick="MyLnkButton_Click" Text="" ForeColor="Red"/></p>

code behind

 if (!Page.IsPostBack)
 {
       if (Session["USRID"] != null)
       {
            lblWLC.Text = (string)Session["USRID"];                   
            MyLnkButton.Text = "Logout";
            Bind_GV();
       }
       else 
            MyLnkButton.Text = "Login";
 }

Answer 1

I would reverse the logic question is do you need to call Bind_GV regardless of post back.. if so I will depict in my code below

if (Page.IsPostBack && !string.IsNullOrEmpty((string)Session["USRID"]))
{
    MyLnkButton.Text = "Login";
}
else
{
    lblWLC.Text = (string)Session["USRID"];                   
    MyLnkButton.Text = "Logout";
    Bind_GV();
}