Date validation with ASP NET validator

Question

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   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   Below is my code    lt asp TextBox      runat  server       ID  txtDatecompleted     gt   lt cc2 CalendarExtender     ID  datecompletedExtender       runat  server      TargetControlID  txtDatecompleted      Format  dd MMMM yyyy    gt     lt asp RangeValidator      runat  server       ID  RangeValidator1       Type  Date       ControlToValidate  txtDatecompleted       MaximumValue  9999 12 28       MinimumValue  1000 12 28       ErrorMessage  enter valid date       Display  None    gt   lt cc2 ValidatorCalloutExtender      ID  RangeValidator1 ValidatorCalloutExtender       runat  server      Enabled  True      TargetControlID  RangeValidator1  gt   lt  cc2 ValidatorCalloutExtender gt

User · Answer

I think the following is the easiest way to do it    lt asp TextBox ID  DateControl  runat  server  Visible  False  gt  lt  asp TextBox gt   lt asp RangeValidator ID   rvDate  runat   server  ControlToValidate  DateControl  ErrorMessage  Invalid Date  Type  Date  MinimumValue  01 01 1900  MaximumValue  01 01 2100  Display  Dynamic  gt  lt  asp RangeValidator gt

User · Answer

Best option would be  Add a compare validator to the web form  Set its controlToValidate  Set its Type property to Date  Set its operator property to DataTypeCheck eg    lt asp CompareValidator     id  dateValidator  runat  server       Type  Date      Operator  DataTypeCheck      ControlToValidate  txtDatecompleted       ErrorMessage  Please enter a valid date   gt   lt  asp CompareValidator gt

User · Answer

A CustomValidator would also work here    lt asp CustomValidator runat  server      ID  valDateRange       ControlToValidate  txtDatecompleted      onservervalidate  valDateRange ServerValidate       ErrorMessage  enter valid date    gt    Code-behind   protected void valDateRange ServerValidate object source  ServerValidateEventArgs args        DateTime minDate   DateTime Parse  1000 12 28        DateTime maxDate   DateTime Parse  9999 12 28        DateTime dt       args IsValid    DateTime TryParse args Value  out dt                        amp  amp  dt  lt   maxDate                       amp  amp  dt  gt   minDate

User · Answer

I believe that the dates have to be specified in the current culture of the application   You might want to experiment with setting CultureInvariantValues to true and see if that solves your problem   Otherwise you may need to change the DateTimeFormat for the current culture  or the culture itself  to get what you want

[asp.net] Date validation with ASP.NET validator

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