1.把對象賦值爲nullthis
[System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize", ExactSpelling = true, CharSet =System.Runtime.InteropServices.CharSet.Ansi, SetLastError = true)] private static extern int SetProcessWorkingSetSize(IntPtr process, int minimumWorkingSetSize, int maximumWorkingSetSize); #region 內存回收 public void ClearMemory() { GC.Collect(); GC.SuppressFinalize(this); if (Environment.OSVersion.Platform == PlatformID.Win32NT) { SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1); } } #endregion ClearMemory();