vb.net - Delete multiple files -

i'm trying delete multiple files in same folder vb.net, haven't succeed yet. please?

i tried

dim filetodelete1 string dim filetodelete2 string dim filetodelete3 string dim filetodelete4 string dim filetodelete5 string  filetodelete1 = application.startuppath & "\1.exe" filetodelete2 = application.startuppath & "\2.dll" filetodelete3 = application.startuppath & "\3.dll" filetodelete4 = application.startuppath & "\4.dll" filetodelete5 = application.startuppath & "\5.dll"  if system.io.file.exists( filetodelete1 ) = true  my.computer.filesystem.deletefile( filetodelete1 )   elseif system.io.file.exists( filetodelete2 ) = true  my.computer.filesystem.deletefile( filetodelete2 )  elseif system.io.file.exists( filetodelete3 ) = true  my.computer.filesystem.deletefile( filetodelete3 )  elseif system.io.file.exists( filetodelete4 ) = true  my.computer.filesystem.deletefile( filetodelete4 )  elseif system.io.file.exists( filetodelete5 ) = true  my.computer.filesystem.deletefile( filetodelete5 )  end if 

several problems here.

first, file.exists returns boolean value. "=true" unnecessary because you're asking if true=true. fortunately, is.

second, file existence or not it's not way fail. instance, if file in use, you'll exception. should handle it.

third, if need delete thousand files? create string each 1 of them? there better options, instance, getfiles method return readonly list of strings, each 1 representing 1 file. don't know needs, catch files mention, following call can made:

fileio.filesystem.getfiles(application.startuppath, fileio.searchoption.searchtoplevelonly, {"?.exe", "?.dll"})

it every exe , dll file if it's name consists in 1 character.

finally, notice if first condition met, no other evaluated, hence no other file deleted. implementation you'll need run program 5 times in order delete every file. getfiles method solves well.

additionally, consider importing namespaces don't need prefix them in every method call.