Gets or sets "Content-Type:" header field "charset" parameter.
Returns null if Content-Type: header field value isn't set or Content-Type: header field "charset" parameter isn't set.
If you don't know what charset to use then utf-8 is recommended, most of times this is sufficient.
Note: Content-Type must be text/xxx or exception is thrown.
Assembly: LumiSoft.Net Version: 2.0.2636.18419 (Module: LumiSoft.Net)