C#進行Visio二次開發之設備狀態跟蹤(3)

private void visioEventSink_OnShapeDelete(object sender, EventArgs e)
{
            Shape shape = (Shape)sender;
            string strDeviceType = string.Empty;
            string strDeviceName = string.Empty;
            string strDeviceID = string.Empty;
            strDeviceType = VisioUtility.GetShapeCellValue(shape, "設備類型");
            strDeviceID = VisioUtility.GetShapeCellValue(shape, "GUID");
            ShapeLogInfo logInfo = new ShapeLogInfo();
            logInfo.ShapeType = strDeviceType;
            logInfo.ShapeID = shape.NameID;
            logInfo.ShapeName = VisioUtility.GetShapeCellValue(shape, "名稱");
            if (shape.Application.IsUndoingOrRedoing)
            {
                ShapeLogInfo info = Portal.gc.gOperationLog.GetShape(strDeviceType, shape.NameID);
                if (info != null)
                {
                    strDeviceID = info.ShapeGuid;
                }
            }
            logInfo.ShapeGuid = strDeviceID;
            logInfo.ShapeStatus = ShapeStatus.DeleteShape;
            Portal.gc.gOperationLog.AddLog(logInfo);
}

其中if (shape.Application.IsUndoingOrRedoing)是為了判斷該操作是否為Undo或者Redo導致的操作，如果是，我們獲取它之前Shape的GUID即可。

記錄了設備的這些修改信息，我們就可以在保存數據的時候，根據這些信息移除相關的關系，添加或者刪除相關的設備信息了，而且這些信息，對於我們記錄用戶的圖紙修訂記錄也是必須要做的事情。