asp.net - 我想要电话号码的必填字段验证器和数字验证器的验证表达式

Question

我想要电话号码的必填字段验证器和数字验证器的验证表达式

  <asp:TextBox ID="txtPhonenumber" runat="server" MaxLength="11" TabIndex="11" onKeyPress="return validateNumbersOnly();" ></asp:TextBox>

            <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Enter Phone Number" ControlToValidate="txtPhonenumber" ></asp:RequiredFieldValidator>

此代码仅在字段为空时有效

Answer 1

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="txtPhonenumber" ErrorMessage="Only Numbers" Display="None" ValidationExpression="^\d+$" ></asp:RegularExpressionValidator>

ValidationExpression="^\d+$" 用于数字格式验证

Answer 2

<asp:TextBox ID="txtPhonenumber" runat="server" MaxLength="11"  ></asp:TextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Enter Phone Number" ControlToValidate="txtPhonenumber" ></asp:RequiredFieldValidator><asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="txtPhonenumber" ErrorMessage="Only Numbers" Display="None" ValidationExpression="^\d+$" ></asp:RegularExpressionValidator>