Use LinkButton to pass Parameters in the data binding control

I encountered a problem at work today. I used the data bound to Repeater to display BBS posts. to delete a post, I put a LinkButton in Repeater, however, to delete a record, you must have a keyword segment. I want to use LinkButton to pass a record ID to the background. I didn't expect LinkButton TO HAVE A parameter passing method. The following code is implemented:

Front-end code:

<Asp: LinkButton ID = "Lbt_Del" CausesValidation = "False" CommandName = "Del"
OnClick = "Lbt_Del_Click" CommandArgument = '<% # Eval ("ID") %> 'runat = "server"> Delete this comment </asp: LinkButton>

Background code:

Protected void Lbt_Del_Click (object sender, EventArgs e)
{
String delId = (LinkButton) sender). CommandArgument;
}