Question

I’m developing an web application with asp.net and c#. I have a textbox in my page and it inputs a simple date. I’ve used CompareValidator to validate this textbox, but when the user input an specific date (3rd sunday of october, e.g.: 10/16/2011 or 10/17/2010 or 10/18/2009) the compare validator says it is invalid date. Does someone knows what is happening with it ?

My compare validator:

<asp:CompareValidator ID="cvDataProtocolo" runat="server" 
     ControlToValidate="txtDataProtocolo" Display="Dynamic" 
     ErrorMessage="Data Inválida" 
     SetFocusOnError="True" Type="Date" Operator="DataTypeCheck" 
     ValidationGroup="vProtocolo"></asp:CompareValidator>

Edits—–

Yes, I wrote 10/16/2011 just to understand, my culture is setup to pt-BR (portuguese Brazil) and in Brazil we use the format dd/MM/yyyy and the CompareValidator does not valid 16/10/2011 (in format dd/MM/yyyy) as a valid format. I’ve setted my culture in my webform:

protected override void InitializeCulture() {
    Page.Culture = CultureInfo.GetCultureInfoByIetfLanguageTag("pt-BR").ToString();
    Page.UICulture = CultureInfo.GetCultureInfoByIetfLanguageTag("pt-BR").ToString();

    System.Threading.Thread.CurrentThread.CurrentCulture = New CultureInfo("pt-BR");
    System.Threading.Thread.CurrentThread.CurrentUICulture = New CultureInfo("pt-BR");
}

Thank you

Answer 1

Ensure you have set your Culture correctly, as (for instance) in the UK, 10/16/2011 means the 10th day of the 16th month, which would be an invalid date.

See here for more information: http://msdn.microsoft.com/en-us/library/bz9tc508.aspx