ArcEngine添加图层时，内存释放问题备注

MARK：待解决。

ArcEngine自定义方法添加图层时，内存无法释放，而且关闭主控程序后，内存管理器中一直驻留EXE。

1. 命令方式：

           ControlsAddDataCommandClass command = new ControlsAddDataCommandClass();
            command.OnCreate(m_mapControl.Object);
            command.OnClick();

2. 手工方式：

  /////////////////加载图层并设置图层样式
 IWorkspaceFactory pWSFactory = new AccessWorkspaceFactoryClass();
 IWorkspace pWorkspace = pWSFactory.OpenFromFile(AppProperty.gcMDBPath, 0);
 IFeatureWorkspace pFWS = pWorkspace as IFeatureWorkspace;
 IFeatureClass pFeatureClass = pFWS.OpenFeatureClass("工程");
 IFeatureLayer pFeatureLayer = new FeatureLayerClass();
 pFeatureLayer.Name = "工程";
 pFeatureLayer.FeatureClass = pFeatureClass;
 IGeoFeatureLayer pGeoFeatureLayer = (IGeoFeatureLayer)pFeatureLayer;
 ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
 simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSCross;
 ILineSymbol outLineSymbol = new SimpleLineSymbolClass();
  outLineSymbol.Width = 1;
  outLineSymbol.Color = GetColor(140, 140, 140, 100);
 simpleFillSymbol.Outline = outLineSymbol;
 simpleFillSymbol.Color = GetColor(140, 140, 140, 100);
 ISimpleRenderer simpleRender = new SimpleRendererClass();
 simpleRender.Symbol = simpleFillSymbol as ISymbol;
 pGeoFeatureLayer.Renderer = simpleRender as IFeatureRenderer;
  _mapControl.Map.AddLayer(pGeoFeatureLayer);

 

 

彻底的释放也不管用。

 System.Runtime.InteropServices.Marshal.ReleaseComObject(pFWS);
 System.Runtime.InteropServices.Marshal.ReleaseComObject(pWorkspace);
 System.Runtime.InteropServices.Marshal.ReleaseComObject(pWSFactory);

  IMapControl3 _mapControl = (IMapControl3)axMapControlGHT.Object;
    for (int i = 0; i < _mapControl.Map.LayerCount; i++)
     {
         System.Runtime.InteropServices.Marshal.ReleaseComObject(_mapControl.Map.get_Layer(i));
      }

 

 

******************************************************

无奈采用强制关闭EXE的方法释放内存

原文：http://kenter1643.javaeye.com/blog/451973

主程序Program.cs代码

static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MainForm());
            //强制关闭进程
            string exeName = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
            string[] exeArray = exeName.Split('//');

            FunctionClass.RunCmd("taskkill /im " + exeArray[exeArray.Length-1] + " /f ");
        }
    }

强制关闭方法：

/// <summary>
        /// 运行DOS命令
        /// DOS关闭进程命令(ntsd -c q -p PID )PID为进程的ID
        /// </summary>
        /// <param name="command"></param>
        /// <returns></returns>
        public static string RunCmd(string command)
        {
            //實例一個Process類，啟動一個獨立進程
            System.Diagnostics.Process p = new System.Diagnostics.Process();

            //Process類有一個StartInfo屬性，這個是ProcessStartInfo類，包括了一些屬性和方法，下面我們用到了他的幾個屬性：

            p.StartInfo.FileName = "cmd.exe";           //設定程序名
            p.StartInfo.Arguments = "/c " + command;    //設定程式執行參數
            p.StartInfo.UseShellExecute = false;        //關閉Shell的使用
            p.StartInfo.RedirectStandardInput = true;   //重定向標準輸入
            p.StartInfo.RedirectStandardOutput = true;  //重定向標準輸出
            p.StartInfo.RedirectStandardError = true;   //重定向錯誤輸出
            p.StartInfo.CreateNoWindow = true;          //設置不顯示窗口

            p.Start();   //啟動

            //p.StandardInput.WriteLine(command);       //也可以用這種方式輸入要執行的命令
            //p.StandardInput.WriteLine("exit");        //不過要記得加上Exit要不然下一行程式執行的時候會當機

            return p.StandardOutput.ReadToEnd();        //從輸出流取得命令執行結果

        }