why self window opens in a new window?

[samernassar]

I have a hyperlink wrapping a button like this:\[code\]<asp:HyperLink runat="server" ID="LinkDownload" Target="_self"><asp:Button ID="Button_Send" Visible="false" runat="server" Text="Download" /></asp:HyperLink>\[/code\]After validating, the Button is visible. Why when i click on it, a new window is opened even though the Hyperlink is _self.How can I make it such a way that it opens in the same window?Thanks in advance.