Winify – Rev 37
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.Win32;
namespace Winify.Utilities
{
public static class Miscellaneous
{
#region Public Methods
public static bool LaunchOnBootSet(bool enable)
{
using var key = Registry.CurrentUser.OpenSubKey
("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
if (key == null) return false;
switch (enable)
{
case true:
key.SetValue(Constants.AssemblyName, Assembly.GetEntryAssembly().Location);
break;
default:
key.DeleteValue(Constants.AssemblyName, false);
break;
}
return true;
}
public static bool LaunchOnBootGet()
{
using var key = Registry.CurrentUser.OpenSubKey
("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
return key?.GetValue(Constants.AssemblyName) != null;
}
/// <summary>
/// Enable double buffering for an arbitrary control.
/// </summary>
/// <param name="control">the control to enable double buffering for</param>
/// <returns>true on success</returns>
/// <remarks>Do not enable double buffering on RDP: https://devblogs.microsoft.com/oldnewthing/20060103-12/?p=32793</remarks>
public static void SetDoubleBuffered(this Control control)
{
// Double buffering can make DGV slow in remote desktop
if (!SystemInformation.TerminalServerSession)
{
var dgvType = control.GetType();
var pi = dgvType.GetProperty("DoubleBuffered",
BindingFlags.Instance | BindingFlags.NonPublic);
pi.SetValue(control, true, null);
}
}
public static async Task<Icon> CreateIconFromResource(string resource)
{
var iconBytes = await LoadResource(resource);
using var iconMemoryStream = new MemoryStream(iconBytes);
var bitmap = (Bitmap)Image.FromStream(iconMemoryStream);
var bitmapIntPtr = bitmap.GetHicon();
var icon = Icon.FromHandle(bitmapIntPtr);
return icon;
}
public static async Task<byte[]> LoadResource(string resource)
{
var assembly = Assembly.GetExecutingAssembly();
using var manifestResourceStream = assembly.GetManifestResourceStream(resource);
if (manifestResourceStream == null) return null;
var memoryStream = new MemoryStream();
await manifestResourceStream.CopyToAsync(memoryStream);
memoryStream.Position = 0L;
return memoryStream.ToArray();
}
public static void InvokeIfRequired<T>(this T control, Action<T> action) where T : Control
{
if (control.InvokeRequired)
{
control.BeginInvoke((MethodInvoker)delegate { action(control); });
return;
}
action(control);
}
/// <summary>
/// Attempts to access a file within <see cref="timeout" /> milliseconds by retrying to access the file every
/// <see cref="retry" /> milliseconds.
/// </summary>
/// <param name="path">the path to the file</param>
/// <param name="mode">the file mode used to access the file</param>
/// <param name="access">the file access to use</param>
/// <param name="share">the file share to use</param>
/// <param name="cancellationToken">a cancellation token</param>
/// <param name="retry">the amount of milliseconds to retry between accesses to the file</param>
/// <param name="timeout">the amount of time in milliseconds to attempt and access the file</param>
/// <returns>a file stream if the file could be accessed within the allotted time</returns>
public static async Task<FileStream> GetFileStream(string path, FileMode mode, FileAccess access,
FileShare share, CancellationToken cancellationToken,
int retry = 1000, int timeout = 60000)
{
var time = Stopwatch.StartNew();
while (time.ElapsedMilliseconds < timeout && !cancellationToken.IsCancellationRequested)
{
try
{
return new FileStream(path, mode, access, share);
}
catch (IOException e)
{
// access error
if (e.HResult != -2147024864) throw;
}
await Task.Delay(retry, cancellationToken);
}
throw new TimeoutException($"Failed to get a access to {path} within {timeout}ms.");
}
/// <summary>
/// Returns the machine GUID.
/// </summary>
/// <returns>the GUID of the machine</returns>
/// <remarks>https://stackoverflow.com/questions/2333149/how-to-fast-get-hardware-id-in-c</remarks>
public static string GetMachineGuid()
{
var location = @"SOFTWARE\Microsoft\Cryptography";
var name = "MachineGuid";
using (var localMachineX64View =
RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
{
using (var rk = localMachineX64View.OpenSubKey(location))
{
if (rk == null)
throw new KeyNotFoundException(
string.Format("Key Not Found: {0}", location));
var machineGuid = rk.GetValue(name);
if (machineGuid == null)
throw new IndexOutOfRangeException(
string.Format("Index Not Found: {0}", name));
return machineGuid.ToString();
}
}
}
#endregion
}
}
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