数字验证表达式

1：整型数字表达式 ^[0-9]*$

例子：服务器控件验证数字

<td>企业人数：  </td>
 <td align="left">
                                <input maxlength="10" type="text" name="userOrg.employeeNum" id="employeeNum" runat="server" value=""
                                    validationgroup="user" class="input2" style="width: 135px;" />(人)
                                <asp:RegularExpressionValidator ID="RegularExpressionValidator2" ControlToValidate="employeeNum"
                                    ValidationGroup="user" ValidationExpression="^[0-9]*$" Display="Static" runat="server"
                                    ErrorMessage="只能输入数字"></asp:RegularExpressionValidator>
                                <br />
                                 <asp:RequiredFieldValidator ID="RequiredFieldValidator7" runat="server" ErrorMessage="企业人数不能为空"
                                    ControlToValidate="employeeNum" ValidationGroup="user"></asp:RequiredFieldValidator>
                                </div>
 </td>

2：浮点型数字表达式 ^(0|[1-9]\d{0,15})(\.\d{0,2})?$

<td> 注册资金(万元)：</td>
 <td align="left">
                                <input type="text" name="userOrg.regFund" id="regFund" runat="server" maxlength="13"
                                    validationgroup="user" value="" class="input2" style="width: 135px;" />(万元)<br />
                                    <asp:RegularExpressionValidator ID="RegularExpressionValidatorFund" ControlToValidate="regFund"
                                    ValidationGroup="user" ValidationExpression="^(0|[1-9]\d{0,15})(\.\d{0,2})?$" Display="Static" runat="server"
                                    ErrorMessage="只能输入数字"></asp:RegularExpressionValidator>
                                 <asp:RequiredFieldValidator ID="RequiredFieldValidator9" runat="server" ErrorMessage="注册资金不能为空"
                                    ControlToValidate="regFund" ValidationGroup="user"></asp:RequiredFieldValidator>
                                    
                                </div>
</td>