WPF——打开XML文件

矫情吗；* 2023-11-28 06:41 256阅读 0赞

private XElement LoadSerializedDataFromFile()
            {
                OpenFileDialog openFile = new OpenFileDialog();
                openFile.Filter = "Designer Files (*.xml)|*.xml|All Files (*.*)|*.*";
    
                if (openFile.ShowDialog() == true)
                {
                    try
                    {
                        return XElement.Load(openFile.FileName);
                    }
                    catch (Exception e)
                    {
                        MessageBox.Show(e.StackTrace, e.Message, MessageBoxButton.OK, MessageBoxImage.Error);
                    }
                }
    
                return null;
            }
    
    private void Open_Executed(object sender, ExecutedRoutedEventArgs e)
            {
                XElement root = LoadSerializedDataFromFile();
    
                if (root == null)
                    return;
    
                this.Children.Clear();//清除画布的所有子元素
                this.SelectionService.ClearSelection();//清除所有选中项
    
                IEnumerable<XElement> itemsXML = root.Elements("DesignerItems").Elements("DesignerItem");
                foreach (XElement itemXML in itemsXML)
                {
                    Guid id = new Guid(itemXML.Element("ID").Value);
                    DesignerItem item = DeserializeDesignerItem(itemXML, id, 0, 0);
                    this.Children.Add(item);
                    SetConnectorDecoratorTemplate(item);
                }
    
                this.InvalidateVisual();
    
                IEnumerable<XElement> connectionsXML = root.Elements("Connections").Elements("Connection");
                foreach (XElement connectionXML in connectionsXML)
                {
                    Guid sourceID = new Guid(connectionXML.Element("SourceID").Value);
                    Guid sinkID = new Guid(connectionXML.Element("SinkID").Value);
    
                    String sourceConnectorName = connectionXML.Element("SourceConnectorName").Value;
                    String sinkConnectorName = connectionXML.Element("SinkConnectorName").Value;
    
                    Connector sourceConnector = GetConnector(sourceID, sourceConnectorName);
                    Connector sinkConnector = GetConnector(sinkID, sinkConnectorName);
    
                    Connection connection = new Connection(sourceConnector, sinkConnector);
                    Canvas.SetZIndex(connection, Int32.Parse(connectionXML.Element("zIndex").Value));
                    this.Children.Add(connection);
                }
            }