控件用来：验证输入值是否在指定范围内

aspx

p>              成绩:<asp:TextBox ID="txtGrade" runat="server"></asp:TextBox><asp:RangeValidator ID="rvGrade" runat="server" ErrorMessage="应输入1-100之间的数" ControlToValidate="txtGrade" MaximumValue="100" MinimumValue="10" Type="Double"></asp:RangeValidator>        <br />        日期:<asp:TextBox ID="txtDate" runat="server"></asp:TextBox>        <asp:RangeValidator ID="rvDate" runat="server" ControlToValidate="txtDate" ErrorMessage="日期错误" MaximumValue="2020-1-1" MinimumValue="2014-1-1"></asp:RangeValidator>        <br />    </p>