引入如下命名空间

using System.Runtime.InteropServices;

 

#region  内存清理     
[DllImport("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize")]     
public static extern int SetProcessWorkingSetSize(IntPtr process, int minSize, int maxSize);     
/// <summary>     
/// 释放内存     
/// </summary>     
public void ClearMemory()     
{     
    GC.Collect();     
    GC.WaitForPendingFinalizers();     
    if (Environment.OSVersion.Platform == PlatformID.Win32NT)     
        SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1);     
}     
#endregion