aspx页面中的OnClientClick,和cs代码中的Response.Write("") 在Button中 <asp:Button ID="lblToInvoic" runat="server" OnClientClick="fff()" CssClass="btn2" Text="开发票" OnClick="lblToInvoic_Click" /> 然后在页首写<script language="JavaScript"> function fff(){ } 和在cs文件里写: protected void lblToInvoic_Click(object sender, EventArgs e) {..Response.Write("<script>window.dialogArguments[0].document.getElementById(window.dialogArguments[1]).value =\"" + strValue1 + "\";window.dialogArguments[0].document.getElementById(window.dialogArguments[2]).value =\"" + strValue2 + "\";window.dialogArguments[0].document.getElementById(window.dialogArguments[3]).value =\"" + strValue3 + "\";window.dialogArguments[0].document.getElementById(window.dialogArguments[4]).value =\"" + strValue4 + "\";window.close();</script>");} 是一样的。只是代码位置不同。