如何在C#方法中调用JavaScript方法

Page.RegisterClientScriptBlock()
Page.RegisterStartupScript()
Response.Write()
something.Attribute.Add("");
something.Attribute["onclick"]="javascript:"

例1、
Respones.Write("<script language=javascript>HelloJava()</script>");
例2、
<asp:button id="btnDelete" text="Delete"></asp:botton>
btnDelete.Attribute.Add("onclick","return HelloJava()");

例3、
aspx:
<asp:button id="btnDelete" text="Delete"></asp:botton>
aspx.vb:
btnDelete.attribute("onclick")="return HelloJava();"