添加后直接引用就可以了
附上控件代码
附上页面代码
<asp:TextBox ID="txtAnswer" runat="server" style="width:180px" ></asp:TextBox><span style ="color :Red">*</span>
<asp:RequiredFieldValidator
ControlToValidate ="txtAnswer"
ID="RequiredFieldValidator4"
runat="server"
ErrorMessage="(此项必填)"
Display="None">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator
ControlToValidate="txtAnswer"
ID="RegularExpressionValidator8"
runat="server"
ErrorMessage="您的答案少于四个字符或者多于五十个字符"
ValidationExpression="^.{4,50}$"
Display="None">
</asp:RegularExpressionValidator>
</li>
<uc:InteractiveMessager ID ="interactiveMessager5"
ControlToMessage ="txtAnswer"
runat ="server"
Text="用于取回密码。请尽量设得复杂一些，以防被人用找回密码功能窃取您的帐号。长度在四到五十个字符之间。"
ValidatorOkMessage ="答案已经输入" >
</uc:InteractiveMessager>