可能得到CompareValidator来接受用逗号的数字？ [英] Possible to get the CompareValidator to accept numbers with commas?

问题描述

我一直在做双类型支票在网页上输入字段，但现在我需要让逗号。可以这样使用CompareValidator做或做我需要使用正则表达式验证？

I had been doing a type check for Double for an input field on a web page but now I need to allow commas. Can this be done using a CompareValidator or do I need to use a regex validator?

推荐答案

而不是使用 TYPE =双师型，请尝试使用 TYPE =货币。它应该接受的值有和没有逗号，但它不会接受超过2位小数。

Rather than using Type="Double", try using Type="Currency". It should accept values with and without commas, however it will not accept more than 2 decimal places.

下面是一个例子：

<asp:TextBox runat="server" ID="TextBox1" />
<asp:CompareValidator runat="server" ID="cValidator" ControlToValidate="TextBox1"
     Type="Currency" Operator="DataTypeCheck" EnableClientScript="true"
     ErrorMessage="Invalid format!" Display="Dynamic" />

另外一个 RegularEx pressionValidator 会的工作，再加上的RequiredFieldValidator 校验空条目（正则表达式验证程序不prevent空条目）。你可以使用的CustomValidator ，但你需要拿出一个JavaScript客户端验证程序，如果你不想在服务器端验证仅仅依靠一个回传。此外，客户端解决方案可能涉及正则表达式，它的更多的工作来全面验证，虽然不是太复杂了。

Otherwise a RegularExpressionValidator would work, coupled with a RequiredFieldValidator to validate empty entries (the regex validator doesn't prevent empty entries). You could use a CustomValidator, but you would need to come up with a client side validation routine in JavaScript if you don't want to rely solely on server side validation with a postback. Also, the client side solution may involve regex and it's more work to validate overall, although not too complicated.

这是用一个例子 RegularEx pressionValidator ：

<asp:TextBox runat="server" ID="TextBox1" />
<asp:RequiredFieldValidator runat="server" ID="rfValidator" Display="Dynamic"
     ControlToValidate="TextBox1" ErrorMessage="Required!" />
<asp:RegularExpressionValidator ID="reValidator" runat="server"
       ControlToValidate="TextBox1" 
       EnableClientScript="True"
       ErrorMessage="Invalid Format!" 
       Display="Dynamic"
       ValidationExpression="(\d{1,3}(,\d{3})*\.\d{2})|(\d+(\.\d{2})?)" />

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