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[英]How to use multiple Regular expressions in ASP.NET Web Forms Regular Expression validator
[英]How to use the ASP.NET Regular expression validator
我正在尝试为文本框设置最小字符数,并且如果用户输入未达到设置的最小字符数,则必须显示错误,在我尝试使用<asp:RegularExperssionValidator>
来做到这一点,但错误消息已被清除显示,我在想什么或做错了什么?
<asp:TextBox ID="TextBox2" runat="server" CssClass="form-control"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
ErrorMessage="ID length is Less than 10" ControlToValidate="TextBox2" ValidationExpression=".{10}.*">
</asp:RegularExpressionValidator>
`
<asp:TextBox ID="TextBox2" runat="server" CssClass="form-control"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
ErrorMessage="ID length is Less than 10" ControlToValidate="TextBox2" ValidationExpression="^[a-zA-Z0-9]{10,1000}$">
</asp:RegularExpressionValidator>
<br />
<asp:Button ID="Button1" runat="server" Text="Button" />
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