Error CS1073

im getting this error [IDLE] CompilationErrorException: (29,452): error CS1073: Unexpected token ‘class’

after putting post data in the http request and start debugger getting this error

Maybe you’re using interpolated mode in your post data, and it has the < and > characters both used for variables and for other stuff like XML (something like <class> or so in your case), in that case it’s interpreting everything as a variable, and class is a reserved C# keyword which is not expected to be found in the middle of an interpolated string. There are a few questions on this forum on how to deal with XML post data, please use the search function.