I have created custom site column with type text and I included in one of content types. But it is allowing me for 255 characters only. In which way I can extend it, say 1024 characters. I did this before by mentioning somewhere in web.config file but I forgot how i did.
Can anyone please tell me how can I achieve this. Thanks in advance.
Just use column type note and you will have more space.
Looks like this is issue that SPFieldText won’t allow more than 255 chars, althought it has MaxLength property, it anyway won’t allow more chars.
You may read this article on how to create your custom column that can be used to type in more than 255 chars.