普通防爆pression验证错误不会在进入一个空白现身

问题描述

我已经写了一个普通的前pression允许最多3位小数。正则表达式是：

I have written a regular expression to allow maximum 3 decimal digits. The Regex is:

^\d+([.,]\d{1,3})?$

它完全正确的输入，例如（100,100.22等），也显示了验证错误，当用户尝试输入（0或，或10.11111）

It works perfectly for correct inputs such as (100,100.22 etc) and also shows up the validation error when the user tries to input (0. or , or 10.11111)

然而，当我试图进入的空间不会被显示错误。该表单不会被提交。有没有办法让用户明白是什么原因造成的错误。

However, the error does not get displayed when I am trying to enter spaces.The form doesn't get submitted. There is no way for a user to understand what is causing the error.

以下是我的code在aspx文件：

Following is my code in aspx file:

<td>
<asp:TextBox ID="txtBuildingSize" CssClass="textbox" runat="server" 
 ToolTip="in Sq Ft" meta:resourcekey="txtBuildingSizeResource1"></asp:TextBox>
<asp:Label ID="lblSqM1" runat="server" CssClass="optionLabel" 
meta:resourcekey="lblSqM1Resource1" Text="square meters"></asp:Label>
</td>
<td>
<asp:RegularExpressionValidator ID="strBuildingSizeValidator" 
  ControlToValidate="txtBuildingSize" Display="Dynamic"
  runat="server" ForeColor="Red" ValidationExpression="^\d+([.,]\d{1,3})?$" 
  meta:resourcekey="strBuildingSizeValidatorResource1" 
  Text="* Max 3 decimals only"></asp:RegularExpressionValidator>

这可能是什么问题？

What could be the problem?

解决： ^ \ D +（[，] \ D {1,3} \ {0,0}）$

Solved: ^\d+([.,]\d{1,3}\ {0,0})?$

的（空间）{0,0}的伎俩。该错误消息出现了。

The (space){0,0} did the trick. The error message shows up.

推荐答案

解决方案由玛纳斯发现：

Solution found by Manasi:

^\d+([.,]\d{1,3}\ {0,0})?$

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