C# pass additional parameter to an event handler while binding the event at the run time

You can use anonymous delegate for that:

lnkSynEvent.Click +=          new EventHandler((s,e)=>lnkSynEvent_Click(s, e, your_parameter));

c# asp.net methods parameters arguments

I don't know exactly when it's changed, but now it's even easier!

lnkSynEvent.Click += (s,e) => lnkSynEvent_Click(s, e, your_parameter);

c# asp.net methods parameters arguments

by use of delegate:

lnkbtnDel.Click += delegate(object s, EventArgs e1) {                  Dynamic_Click(s, e1, lnkbtnDel.ID);                };`

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