两个PAGE的代码如下:page.aspx(父窗体) <html><body><script language="C#" runat="server"></script><form id="Form1" method=post runat="server"><asp:TextBox ID=txtName Runat=server></asp:TextBox><input type=button value="弹出子窗口" onclick="Mywin=window.open('subpage.aspx');"></form></body></html>subpage.aspx(子窗体) <html><body><script language="JavaScript">function popup(){window.opener.document.all["txtName"].value=document.all["txtSubName"].value;window.close() }</script><script language="C#" runat="server"></script><form id="Form1" method=post runat="server"><asp:TextBox ID=txtSubName Runat=server></asp:TextBox><p><input type="button" value="传值并返回父窗口" name="button1" onclick="popup()"></p></form></body></html>几点说明:1。弹出子窗体,将子窗体的textbox的值传递给父窗体2。两个button都采用html控件,也可以换成asp.net 的server控件,至于server控件如何调用jscript,这里有个小窍门,button_click事件里执行这样的代码 string script="<script language="JavaScript">window.open('subpage.aspx');</script>"Response.Write(script);这样就执行了javascript代码