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);
}
}
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);
}
}
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;
}
}
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;
}
}