我用你的控制按钮创建了项目。AddButton 创建运行时按钮控件并将其添加到 canvas1 中。当我右键单击运行时生成的控件时，会弹出新窗口。我想保存此窗口并以与我离开时相同的状态重新加载它。我使用 xml 序列化，它加载但单击该按钮不起作用。
这是我的代码：
private void AddButton_Click(object sender, RoutedEventArgs e)
{
Button b = new Button();
b.MinHeight = 23;
b.MinWidth = 73;
b.SetValue(Canvas.LeftProperty, e.GetPosition(this).X);
b.SetValue(Canvas.TopProperty, e.GetPosition(this).Y);
b.Content = i.ToString();
canvas1.Children.Add(b);
b.MouseRightButtonUp += new MouseButtonEventHandler(NewButton_Click);
}
private void NewButton_Click(object sender, EventArgs e)
{
Button btn = (Button)sender;
ContextMenu pMenu = new ContextMenu();
MenuItem item1 = new MenuItem();
item1.Header = "Properties";
pMenu.Items.Add(item1);
btn.ContextMenu = pMenu;
item1.Click += new RoutedEventHandler(item1_Click);
}
private void item1_Click(object sender, EventArgs e)
{
MenuItem btn = (MenuItem)sender;
ControlProp c = new ControlProp();
c.ShowDialog();
}
private void Save_Click(object sender, RoutedEventArgs e)
{
StringBuilder outstr = new StringBuilder();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.OmitXmlDeclaration = true;
settings.NewLineOnAttributes = true;
XamlDesignerSerializationManager dsm = new XamlDesignerSerializationManager(XmlWriter.Create(outstr, settings));
dsm.XamlWriterMode = XamlWriterMode.Expression;
XamlWriter.Save(this.canvas1, dsm);
string savedControls = outstr.ToString();
//Show Dialog Box
Microsoft.Win32.SaveFileDialog dlg = new Microsoft.Win32.SaveFileDialog();
dlg.FileName = "Document"; // Default file name
dlg.DefaultExt = ".xaml"; // Default file extension
dlg.Filter = "Xaml documents (.xaml)|*.xaml"; // Filter files by extension
// Show save file dialog box
Nullable<bool> result = dlg.ShowDialog();
// Process save file dialog box results
if (result == true)
{
// Save document
string filename = dlg.FileName;
File.WriteAllText(filename, savedControls);
}
}
private void OpenFile_Click(object sender, RoutedEventArgs e)
{
//Open FileDialog
string filename;
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "Document"; // Default file name
dlg.DefaultExt = ".xaml"; // Default file extension
dlg.Filter = "Xaml documents (.xaml)|*.xaml"; // Filter files by extension
// Show save file dialog box
Nullable<bool> result = dlg.ShowDialog();
// Process save file dialog box results
if (result == true)
{
// Save document
filename = dlg.FileName;
//Open Xaml
StreamReader sR = new StreamReader(filename);
string text = sR.ReadToEnd();
sR.Close();
StringReader stringReader = new StringReader(text);
XmlReader xmlReader = XmlReader.Create(stringReader);
Canvas wp = (Canvas)System.Windows.Markup.XamlReader.Load(xmlReader);
canvas1.Children.Clear(); // clear the existing children
foreach (FrameworkElement child in wp.Children) // and for each child in the WrapPanel we just loaded (wp)
{
canvas1.Children.Add(CloneFrameworkElement(child)); // clone the child and add it to our existing wrap panel
}
}
}
FrameworkElement CloneFrameworkElement(FrameworkElement originalElement)
{
string elementString = XamlWriter.Save(originalElement);
StringReader stringReader = new StringReader(elementString);
XmlReader xmlReader = XmlReader.Create(stringReader);
FrameworkElement clonedElement = (FrameworkElement)XamlReader.Load(xmlReader);
return clonedElement;
}
简而言之，我想保存用户在运行时创建的项目，然后像 mspaint 一样使用保存项目和打开项目工具重新打开它。