private void button2_Click(object sender, EventArgs e) { Button button1 = sender as Button; ItopVector.Core.Document.SvgDocument doc = this.document; string filepath = string.Empty; if (doc == null) { filepath = Application.StartupPath + @"\symbol\symbol.xml"; if (!File.Exists(filepath)) { filepath = string.Empty; OpenFileDialog opendlg = new OpenFileDialog(); opendlg.Filter = "xml文件(*.xml)|*.xml"; if (opendlg.ShowDialog(this) == DialogResult.OK) { filepath = opendlg.FileName; } } if (File.Exists(filepath)) { try { doc = ItopVector.Selector.SymbolGroup.LoadSymbol(filepath); } catch (Exception err) { MessageBox.Show(err.Message); } } } if (doc != null) { XmlNode node = doc.SelectSingleNode("//*[@id='" + this.curElement.ID + "']"); if (node != null) { MessageBox.Show("已存在名为'" + this.curElement.ID + "'组或图元!", "增加图元"); return; } SymbolGroupDialog dlg = new SymbolGroupDialog(); dlg.SymbolDoc = doc; dlg.ToInsertElement = this.curElement; if (dlg.ShowDialog(this) == DialogResult.OK) { if (this.symbolSelector != null) { this.symbolSelector.AddSymbol(this.curElement as Symbol, dlg.SelectedElement.GetAttribute("id")); } else { dlg.SelectedElement.AppendChild(this.document.ImportNode(this.curElement, true)); } doc.Save(doc.FilePath); // MessageBox.Show("保存成功,需要重新启动程序才有效。"); } } }