How do I find if the file MyFile.03 is in the folder MyTmpFolder?

H开发者_如何学Cow do I find if the file MyFile.03 is in the folder MyTmpFolder using C# and Winforms?

Use

System.IO.File.Exists("MyTempFolder\\MyFile.02");

System.IO.File [] files=Directory.GetFiles(dirpath);

foreach(File f1 in files) { if(f1.SubString(0,f1.lastIndexOF('.'))=="MyFile.02") { File myFile=f1; } }

The System.IO namespace contains members to help us work with input and output operations (a category which file operations fall under), so using the Path class we can manipulate file and folder paths and using the File class we can operate on files - this ought to do the trick for you:

using System.IO;

var exists = File.Exists(Path.Combine(MyTmpFolder, MyDesiredFile));

bool doesExist = File.Exists("MyTmpFolder\\MyFile.02");