[ASP.NET 3.5][C#] How to make web pages open "new tab" in the "origin browser" by pressing Button, HyperLink, or LinkButton ?

How to make web pages open "new tab"  in the "origin browser" by pressing Button, HyperLink, or LinkButton ?
Thank you ^_^
PS: I only know that HyperLink open a new browser by "target = _blank", such as
<a href="http://www.microsoft.com" target=_blank>Microsoft</a>
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