How to completely disable the link button? [duplicate]

Answer 1

In Page Load you can write following way:

page_load
{    
   if(lnkButton.Enabled)
      lnkButton.Attributes.Add("OnClientClick","Javascript");    
}

Answer 2

This is from Disables the link button

/// <summary>
/// Disables the link button.
/// </summary>
/// <param name="linkButton">The LinkButton to be disabled.</param>
public static void DisableLinkButton(LinkButton linkButton)
{
    linkButton.Attributes.Remove("href");
    linkButton.Attributes.CssStyle[HtmlTextWriterStyle.Color] = "gray";
    linkButton.Attributes.CssStyle[HtmlTextWriterStyle.Cursor] = "default";
    if (linkButton.Enabled != false)
    {
       linkButton.Enabled = false;
    }

    if (linkButton.OnClientClick != null)
    {
        linkButton.OnClientClick = null;
    }
}

check this also how-to-enable-or-disable-linkbutton