多线程读取ArcEngine符号库到Listview列表

直接上代码：

        private string styleName = "3D Basic.ServerStyle";
        /// <summary>
        /// 添加图片和名称委托
        /// </summary>
        /// <param name="pBitMap"></param>
        /// <param name="pName"></param>
        public delegate void addImageAndItemHandle(Bitmap pBitMap, string pName);
        /// <summary>
        /// 读取符号线程
        /// </summary>
        Thread _ReadSymbolThread = null;
        private void addImageAndItem(Bitmap pBitMap, string pName)
        {
            //ImageList中添加图片
            this.imageList1.Images.Add(pBitMap);
            //ListView中添加图片名称
            this.listView1.Items.Add(pName, this.imageList1.Images.Count - 1);
        }
        public void ReadStyleServer()
        {
            IStyleGallery tStyleGallery = new ServerStyleGalleryClass();
            IStyleGalleryStorage tStyleGalleryStorage = tStyleGallery as IStyleGalleryStorage;
            tStyleGalleryStorage.AddFile(styleName);
            IEnumStyleGalleryItem tStyleGalleryItems = tStyleGallery.get_Items("Marker Symbols", styleName, "");
            tStyleGalleryItems.Reset();
            IStyleGalleryItem tStyleGalleryItem = tStyleGalleryItems.Next();
            try
            {
                //18 是Marker Symbols类别的序号
                //可以参考这个http://www.gisall.com/html/59/4359-774.html
                //讲的很详细
                IStyleGalleryClass tSyleGallClass = tStyleGallery.get_Class(18);
                while (tStyleGalleryItem != null)
                {
                    string tName = tStyleGalleryItem.Name;
                    Bitmap tBitmap = StyleGalleryItemToBmp(this.imageList1.ImageSize.Width, this.imageList1.ImageSize.Height, tSyleGallClass, tStyleGalleryItem);
                    this.Invoke(new addImageAndItemHandle(addImageAndItem), new object[] { tBitmap, tName });
                    tStyleGalleryItem = tStyleGalleryItems.Next();
                }
            }
            catch (System.Runtime.InteropServices.COMException ex)
            {
                string tErrorMessage = ex.Message +
                    ex.ErrorCode;
            }
            finally
            {
                //释放这个接口，不然再次读取时会报错
                ReleaseCom(tStyleGalleryItems);
                ReleaseCom(tStyleGallery);
            }
        }
        private void ReleaseCom(object o)
        {
            while (System.Runtime.InteropServices.Marshal.ReleaseComObject(o) > 0)
            {

            }
        }
        /// <summary>
        /// 这个是从网上找的函数
        /// </summary>
        /// <param name="iWidth"></param>
        /// <param name="iHeight"></param>
        /// <param name="mStyleGlyCs"></param>
        /// <param name="mStyleGlyItem"></param>
        /// <returns></returns>
        public System.Drawing.Bitmap StyleGalleryItemToBmp(int iWidth, int iHeight, ESRI.ArcGIS.Display.IStyleGalleryClass mStyleGlyCs, ESRI.ArcGIS.Display.IStyleGalleryItem mStyleGlyItem)
        {
            //建立符合规格的内存图片
            Bitmap bmp = new Bitmap(iWidth, iHeight);
            Graphics gImage = Graphics.FromImage(bmp);
            //建立对应的符号显示范围
            ESRI.ArcGIS.Display.tagRECT rect = new ESRI.ArcGIS.Display.tagRECT();
            rect.right = bmp.Width;
            rect.bottom = bmp.Height;
            //生成预览
            System.IntPtr hdc = new IntPtr();
            hdc = gImage.GetHdc();
            //在图片上绘制符号
            mStyleGlyCs.Preview(mStyleGlyItem.Item, hdc.ToInt32(), ref rect);
            gImage.ReleaseHdc(hdc);
            gImage.Dispose();
            return bmp;

        }
        /// <summary>
        /// 单击按钮实现线程读取符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btReadStyle_Click(object sender, EventArgs e)
        {
            this.imageList1.Images.Clear();
            this.listView1.Items.Clear();
            if (_ReadSymbolThread != null && _ReadSymbolThread.IsAlive)
            {
                _ReadSymbolThread.Abort();
            }
            _ReadSymbolThread = new Thread(new ThreadStart(ReadStyleServer));
            _ReadSymbolThread.Start();
        }

结果如图所示：