asp.net button 绑定多个参数

代码如下:
CommandName="id_" CommandArgument='<%#Eval("id_comments_")+","+Eval("iscertification_comments_") %>' OnCommand="comment_click"

代码如下:
protected void comment_click(object sender,CommandEventArgs e)
{
string temp = e.CommandArgument.ToString();
MessageBox.Show(temp);
}