Comments on: Regular Expression Validation Custom Field Type

By: Mad_Boy3007

Mad_Boy3007 — Tue, 28 Apr 2009 05:23:53 +0000

“Field type RegExTextField is not installed properly. Go to the list settings page to delete this field”

I researched lot and finally got the solution. Actually this problem is coming due to wrong Namespace specification in following line :

CustomFieldTypes.RegExValidation.RegExTextField,
CustomFieldTypes.RegExValidation, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=d7f772d26282eb60

Please make changes according to your namespace, the syntax goes like this:

YourDefaultNamespace.YourFieldClassName,
YourAssemblyName, Version=dll_VersionInAssembly,
Culture=neutral, PublicKeyToken=PublicTookenInAssembly,

try this it will resolve this error.

By: SharePoint Basic Needs « Amol Ghuge’s SharePoint Blog

SharePoint Basic Needs « Amol Ghuge’s SharePoint Blog — Fri, 20 Mar 2009 19:39:26 +0000

[...] Todd’s RegEx: http://claytonj.wordpress.com/2007/05/15/regular-expression-validation-custom-field-type/ [...]

By: SharePoint 2007 Link List « Prashant Jadhav

SharePoint 2007 Link List « Prashant Jadhav — Tue, 21 Oct 2008 04:34:41 +0000

[...] Todd’s RegEx: http://claytonj.wordpress.com/2007/05/15/regular-expression-validation-custom-field-type/ [...]

By: Sellers

Sellers — Fri, 08 Aug 2008 20:44:30 +0000

This is the error I am recieving when I try to add the new field…
Name cannot begin with the ‘3′ character, hexadecimal value 0×33. Line 1, position 104

any help???

By: kisha

kisha — Wed, 09 Jul 2008 11:45:50 +0000

can any one pls tell me what are available types like type=”Text”
n from where i can find out these type
like if i want show a dropdown or check box or radiobutton etc
thnks

By: surya

surya — Fri, 23 May 2008 04:30:42 +0000

Hi CJ,

I have created a custom field type using a usercontrol (ListBox control). The field is created and also attached to any custom list successfully. But when i try to add a new item to the list and save, it gives me a “null object exception”. I find that my listbox control doesn’t get initialized somehow. Have u come across such a situation or do you have any ideas as to what might be missing ?

Thanks in advance and great article u have here.

By: Cindy Rodriguez

Cindy Rodriguez — Wed, 21 May 2008 19:39:07 +0000

Jaco Van Eeden, thank you so much for providing that information. I’m new to SharePoint too and your explanations were exactly what I needed to fix the problems I was having.

By: Cindy Rodriguez

Cindy Rodriguez — Wed, 21 May 2008 19:37:26 +0000

This is wonderful! Thank you for such a great job. You have just saved many people hours of work and this is a great introduction to developing with SharePoint.

Thanks again!

By: Ned

Ned — Thu, 13 Mar 2008 18:26:52 +0000

I am able to update the Regular and Exception Message in the fldtypes*.xml but how would update the Description and make the Custom Field Type Required = “True”?

By: gavinbarron

gavinbarron — Wed, 05 Mar 2008 00:36:32 +0000

Great article Clayton!

It’s gone straight into my del.icio.us