Hy guys i need little help, when i want to create injector i got 6 errors what say's OpenFileDialog1 is not declared All 6 errors are that

OpenFileDialog1.Filter = "DLL (*.dll) |*.dll|(*.*) |*.*"
OpenFileDialog1.ShowDialog()
OpenFileDialog1.FileName.Substring(OpenFileDialog1 .FileName.LastIndexOf("\")This is some of that's errors!!!












OpenFileDialog1.Filter = "DLL (*.dll) |*.dll|(*.*) |*.*"
OpenFileDialog1.ShowDialog()
OpenFileDialog1.FileName.Substring(OpenFileDialog1 .FileName.LastIndexOf("\")This is some of that's errors!!!
















