FCKeditor (Changed to CKEditor for some reasons) is the coolest editor for asp.net (it works also with lot of other languages). It is easy to implement, full of features and can be easily customized.
I use it for some personal sites. One important feature that is missing is the option to control and limit the size of individual uploaded file. I know I can do it in the web.config using the httpRuntime section, but it will effect all the site. I wanted to control the limit of individual uploaded file. Since the ASP.NET FCKeditor is an open source, I downloaded the source and made some changes to conquer my needs. Below you can download the modified code, or the compiled dll (release mode).
To control the limits of the uploaded files, After you placed the modified dll in your BIN folder, dig into the folder \editor\filemanager\connectors\aspx inside your editor folder. There you will find the file 'config.ascx'. The method 'SetConfig()' is the place you will made some changes:
Add TypeConfig["File"].MaxAllowdSize = 4096; to set the maximum uploaded file to 4MB
Add TypeConfig["Image"].MaxAllowdSize = 2096; to set the maximum, uploaded image to 2MB
TypeConfig["Flash"].MaxAllowdSize = 2096; to set the maximum, uploaded flash to 2MB
TypeConfig["Media"].MaxAllowdSize = 4096; to set the maximum uploaded media file to 4MB
Of course the numbers can be change as your needs.
FredCK.FCKeditorV2.dll.zip (14.26 kb)
FCKEditor.NET_src.zip (61.11 kb)