Just add to the CommandArgument parameter and read it out on the Click handler:
<asp:LinkButton ID="ENameLinkBtn" runat="server"
style="font-weight: 700; font-size: 8pt;" CommandArgument="YourValueHere"
OnClick="ENameLinkBtn_Click" >
Then in your click event:
protected void ENameLinkBtn_Click(object sender, EventArgs e)
{
LinkButton btn = (LinkButton)(sender);
string yourValue = btn.CommandArgument;
// do what you need here
}
Also you can set the CommandArgument argument when binding if you are using the LinkButton in any bindable controls by doing:
CommandArgument='<%# Eval("SomeFieldYouNeedArguementFrom") %>'