使用 ASP.NET 验证器进行日期验证 [英] Date validation with ASP.NET validator

问题描述

我正在尝试使用 ASP.NET RangeValidator 来验证文本框上的日期.文本框中输入的日期格式为dd MMMM yyyy.

I'm trying to use an ASP.NET RangeValidator to validate a date on a textbox. The format of the date entered on the textbox is dd MMMM yyyy.

如何使用范围验证器来验证有效日期?如果我输入 1 January 1000 作为最小值或最大值，我会收到一条错误消息，指出值无法转换为日期类型，但如果我使用其他格式，它会将我输入的文本视为无效.

How can I use the range validator to validate a valid date? If I enter 1 January 1000 as the min or max value I get an error saying value cannot be converted to type date, but if I use another format it picks up my entered text as invalid.

下面是我的代码:

<asp:TextBox 
    runat="server" 
    ID="txtDatecompleted" 
/>
<cc2:CalendarExtender
    ID="datecompletedExtender" 
    runat="server"
    TargetControlID="txtDatecompleted"
    Format="dd MMMM yyyy"
/>  
<asp:RangeValidator 
    runat="server" 
    ID="RangeValidator1" 
    Type="Date" 
    ControlToValidate="txtDatecompleted" 
    MaximumValue="9999/12/28" 
    MinimumValue="1000/12/28" 
    ErrorMessage="enter valid date" 
    Display="None"
/>
<cc2:ValidatorCalloutExtender 
    ID="RangeValidator1_ValidatorCalloutExtender" 
    runat="server"
    Enabled="True"
    TargetControlID="RangeValidator1">
</cc2:ValidatorCalloutExtender>

推荐答案

最好的选择是

向网络表单添加比较验证器.设置它的 controlToValidate.将其 Type 属性设置为 Date.将其 operator 属性设置为 DataTypeCheck 例如:

Add a compare validator to the web form. Set its controlToValidate. Set its Type property to Date. Set its operator property to DataTypeCheck eg:

<asp:CompareValidator
    id="dateValidator" runat="server" 
    Type="Date"
    Operator="DataTypeCheck"
    ControlToValidate="txtDatecompleted" 
    ErrorMessage="Please enter a valid date.">
</asp:CompareValidator>

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