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Posted 18 Jan 2004


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Web DatePicker Control

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29 Mar 20043 min read
Article on how I built my Date Picker Control.


Thanks to Camilo Orozco for providing me with the translated uncompiled C# code. The .cs file had been added to the source code zip. Sorry it's taken so long to post.


One of the most common causes of application failure, especially for new developers, is handling date input from the user. If it's in the wrong format and you try to write it to the database, then the database command fails. If the user switches the day and month then your date could be wrong, even if you're using a regular expression validator (i.e. 01/02/2004 could be 2 January 2004 or 1 February 2004).

To get around this, I used to wire a server side calendar control to the textbox onClick event, and launch it in a new window, forcing the user to select a date, then return the date in the format of my choice to the textbox. But while this is all well and good for simple web apps, this week I needed the same functionality to be launched from inside a server component I was writing.


I remember that in the old days of ASP, there was a lengthy JavaScript solution we used to use, that would be perfect for what I was trying to do now. I asked a few people, and a lot of guys sent me the same code back. Full credit must go to Tan Ling Wee for writing the original JavaScript code, even though I've never met him (or her - not quite sure), and to all the people who passed it on until it eventually arrived in my email box. Now here was a piece of code perfect for what I needed to do, but it's over 600 lines long, and there's no way in hell I was going to manually reformat it line by line so that I could render it to the client. So, as any really lazy developer does things, I wrote my own app to process the JavaScript and return a code block that I could simply copy and paste into Visual Studio (will write another article on this, and upload the app for use by all). After that, it was simply a matter of writing a new class that inherited from the control, added properties to make the control customizable, and compiled.

Using the code

If you're using Visual Studio, you can simply add the control to the Toolbox, and then drag and drop it into your apps. For everyone else, first copy the DLL to the bin directory of your project. Then, on your aspx page, you'll first need to register the component as follows:

<%@ Register TagPrefix="cc1" 
    Assembly="DatePicker" %>

Then place the control on the page like so:

<cc1:DatePicker id="DatePicker1" runat="server"
  imgDirectory="/WebApplication6/img/" DateType="dd mmm yyyy">

You'll notice the properties imgDirectory and DateType. imgDirectory is the path to the directory where the control images needed can be found (images included in the download files). DateType is the format in which the date should be returned. "dd mmm yyyy" writes out the full date, e.g. "01 January 2003", but this can be changed to any format by changing this property (e.g. "dd/mm/yyyy" or "mm/dd/yyyy"). There is also a CssClass property, which sets the CssClass for the textbox, and a Text property, to set the start text to be displayed in the textbox.


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Doug Wilson
Web Developer
South Africa South Africa
Doug is an Applications Integrator for an online gaming company. He has been programming for 9 years, and has been working with the .NET framework since the beginning of 2003, in both VB.NET & C#.

Comments and Discussions

Questionhow can i set this type date Pin
Parag Chitodkar14-Jun-06 20:40
MemberParag Chitodkar14-Jun-06 20:40 
GeneralType Casting Error Pin
galburt15-Apr-06 21:42
Membergalburt15-Apr-06 21:42 
GeneralRe: Type Casting Error [modified] Pin
descon10-Oct-06 19:52
Memberdescon10-Oct-06 19:52 
GeneralRe: Type Casting Error Pin
Habib Alvi6-Nov-06 12:05
MemberHabib Alvi6-Nov-06 12:05 
GeneralRe: Type Casting Error Pin
rpallas21-Nov-06 14:05
Memberrpallas21-Nov-06 14:05 
GeneralRe: Type Casting Error Pin
Mark Phalen22-Nov-06 8:26
MemberMark Phalen22-Nov-06 8:26 
GeneralRe: Type Casting Error Pin
rpallas22-Nov-06 14:07
Memberrpallas22-Nov-06 14:07 
GeneralRe: Type Casting Error Pin
Kenneth Nilsen28-Dec-06 16:38
MemberKenneth Nilsen28-Dec-06 16:38 
I had success by changing the lines with

Control(Me.Controls.Count - 1).

I have only tested this with master and content pages.

Kenneth Chr. Nilsen

GeneralRe: Type Casting Error Pin
ggomez0395-Jan-07 10:02
Memberggomez0395-Jan-07 10:02 
GeneralThe type or namespace name 'iX' does not exist in the class or namespace 'DatePicker.iX.Controls.DatePicker' (are you missing an assembly reference?) Pin
smilingsatan7-Apr-06 9:02
Membersmilingsatan7-Apr-06 9:02 
GeneralRe: The type or namespace name 'iX' does not exist in the class or namespace 'DatePicker.iX.Controls.DatePicker' (are you missing an assembly reference?) Pin
DracoL1-May-06 23:10
MemberDracoL1-May-06 23:10 
GeneralTrouble reading the date value in GridView Edit Template Pin
pac908153-Apr-06 17:03
Memberpac908153-Apr-06 17:03 
AnswerRe: Trouble reading the date value in GridView Edit Template Pin
laxmiprashanth28-Aug-06 1:55
Memberlaxmiprashanth28-Aug-06 1:55 
QuestionProblem with combobox Pin
YaKs6930-Mar-06 3:57
MemberYaKs6930-Mar-06 3:57 
AnswerRe: Problem with combobox Pin
stixoffire21-May-08 23:00
Memberstixoffire21-May-08 23:00 
GeneralNew Version Pin
IWantToDownload17-Mar-06 10:03
MemberIWantToDownload17-Mar-06 10:03 
Question"Cutting" page problem Pin
yanek615-Mar-06 3:46
Memberyanek615-Mar-06 3:46 
GeneralCode Correction Pin
SikeMullivan18-Feb-06 15:25
MemberSikeMullivan18-Feb-06 15:25 
GeneralRe: Code Correction Pin
kaiss6924-Feb-06 4:05
Memberkaiss6924-Feb-06 4:05 
GeneralRe: Code Correction Pin
ccf_lau3-Mar-06 14:46
Memberccf_lau3-Mar-06 14:46 
GeneralRe: Code Correction Pin
SikeMullivan4-Mar-06 10:17
MemberSikeMullivan4-Mar-06 10:17 
GeneralRe: Code Correction Pin
mingssn22-Aug-06 10:37
Membermingssn22-Aug-06 10:37 
QuestionNot Working in .Net 2.0 using Master Pages Pin
cran2k7-Feb-06 20:54
Membercran2k7-Feb-06 20:54 
AnswerRe: Not Working in .Net 2.0 using Master Pages Pin
Doug Wilson8-Feb-06 0:17
MemberDoug Wilson8-Feb-06 0:17 
GeneralRe: Not Working in .Net 2.0 using Master Pages Pin
cran2k8-Feb-06 2:53
Membercran2k8-Feb-06 2:53 

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