Get position from ImageClickEventArgs
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub btnTarget_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs)
If (e.X > 90 And e.X < 110) And (e.Y > 90 And e.Y < 110) Then
lblResult.Text = "You hit the target!"
Else
lblResult.Text = "You missed!"
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>ImageButton Target</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ImageButton
id="btnTarget"
ImageUrl="http://www.java2s.com/style/logo.png"
Runat="server"
OnClick="btnTarget_Click"
Width="200"
Height="300" />
<asp:Label
id="lblResult"
Runat="server" />
</form>
</body>
</html>
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