Question

asp.net验证控件

我要验证textbox的text要是数字，要用哪个验证控件，还有需要设置哪些控件属性？

Answer 1

用RequiredFieldValidator非空验证控件和RangeValidator范围验证控件搭配
或者用RequiredFieldValidator非空验证控件和RegularExpressionValidator正则表达式验证控件搭配都可以(我写另一种)
但是要记住这两种搭配中都少不了非空验证控件哦

<asp:TextBox ID="txtNumber" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator
ID="rqvNumber"
runat="server"
ControlToValidate="txtNumber"
ErrorMessage="*">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator
ID="rgvNumber"
runat="server"
ControlToValidate="txtNumber"
ErrorMessage="请输入数字"
ValidationExpression="\d+">
</asp:RegularExpressionValidator>
<asp:Button ID="btnTest" runat="server" Text="测试" />

Answer 2

RequiredFieldValidator和RangeValidator

用法：
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1"
Display="Dynamic" ErrorMessage="不能为空"></asp:RequiredFieldValidator>

<asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="TextBox3" Display="Dynamic"
ErrorMessage="格式不对" MaximumValue="99999999" MinimumValue="0" Type="Double"></asp:RangeValidator>

Answer 3

你可以具体看一下我也忘记了，可以指定正则表达式