<asp:RadioButton ID="RadioButton1" runat="server" Text=" 是" GroupName="P_Zhiding" />
<asp:RadioButton ID="RadioButton2" runat="server" GroupName="P_Zhiding" Text=" 否" Checked="True" />
怎么在这里写默认的值呢?
像html控件 会有个value属性 但这个没的