C#二次开发小实现-元素编辑响应事件

• 设置全局局部变量
• 编辑事件的操作
• 编辑绘制事件

设置全局局部变量

#region 成员变量
        //要素编辑器
        private IEditor m_Editor = Editor.Instance;
        //鼠标按下起点
        private IPoint m_StartPoint = null;
        //要素
        private IFeature m_Feature = null;
        //标识符
        private int m_Flag = 0;
        #endregion
           

编辑事件的操作

/// <summary>
        /// 撤销
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void toolStripButton_Undo_Click(object sender, EventArgs e)
        {
            ICommand cmd = new UndoCommand();
            cmd.OnCreate(mapControlMain);
            cmd.OnClick();
        }

        /// <summary>
        /// 回退功能
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void toolStripButton_Redo_Click(object sender, EventArgs e)
        {          
            ICommand cmd = new RedoCommand();
            cmd.OnCreate(mapControlMain);
            cmd.OnClick();
        }

        /// <summary>
        /// 开始编辑
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ToolStripMenuItem_StartEdit_Click(object sender, EventArgs e)
        {
            if (m_Editor.GetEditState() == EditState.StateNotEditing)
            {
                MessageBox.Show("开始编辑");
                m_Editor.StartEditing();
            }
        }

        /// <summary>
        /// 结束编辑
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ToolStripMenuItem_StopEdit_Click(object sender, EventArgs e)
        {
            if (m_Editor.GetEditState() == EditState.StateEditing)
            {
                if (MessageBox.Show("结束编辑前是否保存编辑数据", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.OK)
                {
                    m_Editor.SaveEditing();//保存编辑                 
                }              
                    m_Editor.StopEditing(true);//停止编辑                          
            }
        }
           

编辑绘制事件

if (e.Button != System.Windows.Forms.MouseButtons.Left) return;

            if (m_Editor.GetEditState() == EditState.StateEditing)
            {
                m_StartPoint = mapControlMain.FocusMap.ToMapPoint(e.Location);
                List<ILayer> layerList = new List<ILayer>();
                int iLayerCount = mapControlMain.FocusMap.LayerCount;
                if (iLayerCount > 0)
                {
                    ILayer layer = mapControlMain.GetLayer(iLayerCount - 1);
                    layerList.Add(layer);
                    if (layer.IsValid())
                    {
                        if (layer.LayerType != LayerType.LayerTypeFeatureLayer) return;

                        IGeometry geometry = null;
                        switch (m_Flag)
                        {
                            case 1:
                                //清空选择的所有要素
                                mapControlMain.ActiveView.FocusMap.ClearSelectionFeatures();
                                m_Editor.StartEditOperation("开始编辑");
                                IFeatureClass featureClass1 = (layer as IFeatureLayer).FeatureClass;
                                m_Feature = featureClass1.CreateNewFeature();
                                m_Feature.Geometry = geometry;

                                featureClass1.Save();
                                m_Editor.StopEditOperation();                            
                                mapControlMain.DrawShape(geometry, SystemSymbolSetting.Instance.DefaultFillSymbol);
                                mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);
                                m_Flag = 0; //一定要加                              
                                break;
                            case 2://画多边形
                                mapControlMain.ActiveView.FocusMap.ClearSelectionFeatures();
                                m_Editor.StartEditOperation("开始编辑");
                                geometry = mapControlMain.TrackPolygon() as IGeometry;
                                geometry.SpatialReference = mapControlMain.SpatialReference;

                                IFeatureClass featureClass = (layer as IFeatureLayer).FeatureClass;
                                m_Feature = featureClass.CreateNewFeature(); //创建Feature
                                m_Feature.Geometry = geometry;

                                featureClass.AddFeature(m_Feature); //添加Feature
                                // featureClass.Save(); //保存 

                                m_Editor.StopEditOperation();
                                mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);//不能少                                      
                                m_Flag = 0; //一定要加
                                break;
                            case 3:
                                mapControlMain.ActiveView.FocusMap.ClearSelectionFeatures();
                                m_Editor.StartEditOperation("开始编辑");
                                geometry = mapControlMain.TrackRectangle() as IGeometry;
                                geometry.SpatialReference = mapControlMain.SpatialReference;

                                IFeatureClass featureClass2 = (layer as IFeatureLayer).FeatureClass;
                                m_Feature = featureClass2.CreateNewFeature(); //创建Feature
                                m_Feature.Geometry = geometry;

                                featureClass2.AddFeature(m_Feature); //添加Feature
                                //featureClass2.Save(); //保存

                                m_Editor.StopEditOperation();
                                mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);//不能少                                      

                                m_Flag = 0; //一定要加
                                break;
                            case 4://TrackLine
                                mapControlMain.ActiveView.FocusMap.ClearSelectionFeatures();
                                m_Editor.StartEditOperation("开始编辑");
                                geometry = mapControlMain.TrackLine() as IGeometry;
                                geometry.SpatialReference = mapControlMain.SpatialReference;

                                IFeatureClass featureClass3 = (layer as IFeatureLayer).FeatureClass;
                                m_Feature = featureClass3.CreateNewFeature(); //创建Feature
                                m_Feature.Geometry = geometry;

                                featureClass3.AddFeature(m_Feature); //添加Feature
                                // featureClass.Save(); //保存 

                                m_Editor.StopEditOperation();
                                mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);//不能少                                      
                                m_Flag = 0; //一定要加
                                break;
                            default:
                                break;
                        }
                    }
                }
            }
           

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