Arcgis Engine 加载图层文件 LoadMxFile

 string path = @"C:\Program Files (x86)\ArcGIS\DeveloperKit10.0\Samples\data\World\"; string fileName = @"World.mxd";            //加载图层文件axMapControl1.LoadMxFile(path+fileName);

        private void btnopen_Click(object sender, EventArgs e)        {            axMapControl1.LoadMxFile(OpenMxd());        }        /// <summary>         /// 打开地图文件         /// </summary>         /// <returns>文件的完整路径</returns>         public string OpenMxd()        {            string MxdPath = "";            OpenFileDialog OpenMXD = new OpenFileDialog();            OpenMXD.Title = "打开地图";            OpenMXD.InitialDirectory = "F:";            OpenMXD.Filter = "地图文件(*.mxd)|*.mxd";            if (OpenMXD.ShowDialog() == DialogResult.OK)            {                MxdPath = OpenMXD.FileName;            }            return MxdPath;        }