How to Validate ASP:Textbox to accept only date formats?

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Hi! All,
I have a ASP textbox, and i accept the date in dd-MMM-yyyy format i.e. 01-Jan-2001,
using AJAX Calendar. How can i validate the input of the textbox so that no endusers can enter any characters or any formats.
I just want to restrict users to enter in the specified format in the textbox, if a user enters some other characters he sould be promted to enter in dd-MMM-yyyy.
Thanks.

Posted 11-Apr-11 22:41pm

Nischal Bhatt

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Pong D. Panda · Answer 1 · 2011-04-11T22:56:00

You can either use an asp validator or limit the user to type on your date textbox.

Using validator:

XML

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

Using user input limit :

Since you're using Ajax calendar, check your TargetControlID property and set it to readonly.

Good luck!

jim lahey · Answer 2 · 2011-04-11T22:47:00

Solution 1

Use a RegularExpressionValidator and set it's ControlToValidateID property to the ID of the TextBox. The ValidationExpression of the RegularExpressionValidator will look something like this:

^(([0-9])|([0-2][0-9])|([3][0-1]))\/(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\/\d{4}$

You might also need a ValidationSummary, depending on your scenario.

More info for validation controls in ASP.net can be found here:

http://msdn.microsoft.com/en-us/library/debza5t0.aspx[^]

Posted 11-Apr-11 22:47pm

jim lahey

Comments

Nischal Bhatt 12-Apr-11 4:51am

Hey! Jim, I Have already tried this, but no results yet...

jim lahey 12-Apr-11 4:56am

Have you set CausesValidation on the TextBox?

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.textbox.causesvalidation.aspx

BobJanova 12-Apr-11 5:34am

Remember that the month names might be different for different languages.

If you're doing a server side validation, you might as well just try to parse what they provided as a date. Forcing them to enter it in one format is pointless. Any format validation should be done with JS on the client side – its purpose is to avoid unnecessary postback-reload cycles because you didn't type a date right.

Mahendra.p25 · Answer 3 · 2011-04-11T22:56:00

Solution 2

try this LINK
Click[^]

Posted 11-Apr-11 22:56pm

Mahendra.p25

Prasanta_Prince · Answer 4 · 2011-04-12T03:26:00

XML

<asp:TextBox ID="txtGsmNo" Width="70px" runat="server"
                                    MaxLength="7" CssClass="select" Height="16px"></asp:TextBox>

XML

<cc1:FilteredTextBoxExtender ID="FilteredTextBoxExtender4" runat="server" FilterType="Numbers"
                                                            TargetControlID="txtGsmNo">
                                                        </cc1:FilteredTextBoxExtender>

How to Validate ASP:Textbox to accept only date formats?

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