Exemplos de DirectoryExistsDelegate.BeginInvoke em C# (CSharp)

Exemplo n.º 1

        public static bool DirectoryExists(string path, int millisecondsTimeout = 5000)
        {
            try
            {
                var callback = new DirectoryExistsDelegate(Directory.Exists);
                var result   = callback.BeginInvoke(path, null, null);

                if (result.AsyncWaitHandle.WaitOne(millisecondsTimeout, false))
                {
                    return(callback.EndInvoke(result));
                }
                else
                {
                    callback.EndInvoke(result); // Needed to terminate thread?

                    return(false);
                }
            }

            catch (Exception)
            {
                return(false);
            }
        }

Exemplo n.º 2

        bool DirectoryExistsTimeout(string path, int millisecondsTimeout)
        {
            try
            {
                DirectoryExistsDelegate callback = new DirectoryExistsDelegate(Directory.Exists);
                IAsyncResult            result   = callback.BeginInvoke(path, null, null);

                if (result.AsyncWaitHandle.WaitOne(millisecondsTimeout, false))
                {
                    return(callback.EndInvoke(result));
                }
                else
                {
                    callback.EndInvoke(result);

                    return(false);
                }
            }

            catch (Exception)
            {
                return(false);
            }
        }

Exemplo n.º 3

Arquivo: PackageAPI.cs Projeto: dream1986/cameyo

 static bool DirectoryExistsTimeout(string path, int millisecondsTimeout)
 {
     try
     {
         DirectoryExistsDelegate callback = new DirectoryExistsDelegate(Directory.Exists);
         IAsyncResult result = callback.BeginInvoke(path, null, null);
         if (result.AsyncWaitHandle.WaitOne(millisecondsTimeout, false))
         {
             return callback.EndInvoke(result);
         }
         else
         {
             //callback.EndInvoke(result);   // Problem: this seems to make the current thread block for response!
             return false;
         }
     }
     catch (Exception)
     {
         return false;
     }
 }

Exemplo n.º 4

Arquivo: SelectDBFiles.xaml.cs Projeto: sreenandini/test_buildscripts

        bool DirectoryExistsTimeout(string path, int millisecondsTimeout)
        {
            try
            {
                DirectoryExistsDelegate callback = new DirectoryExistsDelegate(Directory.Exists);
                IAsyncResult result = callback.BeginInvoke(path, null, null);

                if (result.AsyncWaitHandle.WaitOne(millisecondsTimeout, false))
                {
                    return callback.EndInvoke(result);
                }
                else
                {
                    callback.EndInvoke(result);

                    return false;
                }
            }

            catch (Exception)
            {
                return false;
            }
        }