Error : UriFormatException was unhandled

Question

Sir,

 

I am in a mini project to move a file from local directory into secured FTP server.

 

I have done the first process to find the specific file in the local directory. The issue is I could not pass into FTP server.

 

Here the code to send file into FTP server :-

 

 

 and the error screenshot :-

 

 

 

Please help me to solve this issue.