<asp:LinkButton ID="btnSend" runat="server" CausesValidation="False" CommandName="Select" CommandArgument='<%# Eval("FromID")%>' ToolTip='点击回复短信' ForeColor="#6699cc" Text='<%# GetUserName(Eval("FromID"))%>'></asp:LinkButton> 加上:CausesValidation="False" 就行了