在VS2008(框架3.5)上运行的东西似乎不适用于VS2010(框架4)。
我需要在运行时更改窗口的样式(用户首选项)。 在VS2008中,此代码正在运行:
Window1.xaml
<Window x:Class="StyleTest.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
ResizeMode="CanResizeWithGrip">
<Window.Style>
<Style TargetType="{x:Type Window}">
<Setter Property="MinWidth" Value="400" />
<Setter Property="Width" Value="500" />
<Setter Property="MinHeight" Value="400" />
<Setter Property="SizeToContent" Value="Height" />
</Style>
</Window.Style>
<Grid>
</Grid>
</Window>
Window1.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml;
using System.Windows.Markup;
using System.IO;
namespace StyleTest
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
Loaded += new RoutedEventHandler(ObjDialog_Loaded);
}
void ObjDialog_Loaded(object sender, RoutedEventArgs e)
{
XmlDocumentFragment frag = new XmlDocument().CreateDocumentFragment();
frag.InnerXml = "<Style TargetType=\"{x:Type Window}\" xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\"> " +
" <Setter Property=\"Height\" Value=\"200\" />" +
" <Setter Property=\"Width\" Value=\"200\" />" +
"</Style>";
XmlNode node = frag.FirstChild as XmlElement;
Style style = LoadXaml(node.OuterXml) as Style;
if (style != null)
Style = style;
UpdateLayout();
}
private object LoadXaml(string xaml)
{
Exception ex = null;
object o = LoadXaml(xaml, out ex);
if (ex != null)
throw ex;
return o;
}
public static object LoadXaml(string xaml, out Exception exception)
{
try {
ParserContext pc = new ParserContext();
pc.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation");
pc.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml");
pc.XmlnsDictionary.Add("l", "http://www.teradp.com/schemas/GN4/1/WinUI");
pc.XmlnsDictionary.Add("c", "clr-namespace:TeraDP.GN4.Common;assembly=Common");
exception = null;
return XamlReader.Load(new MemoryStream(Encoding.UTF8.GetBytes(xaml)), pc);
}
catch (Exception ex) {
exception = ex;
}
return null;
}
}
}
当我在Framework 3.5上运行此代码时,窗口显示的大小为200x200。 当我在Framework 4上运行此代码时,显示的窗口大小为500x400
最奇怪的是,如果我将MinWidth和MinHeight添加到运行时应用的样式,那么这些属性也可以在VS2010中正常工作,而宽度和高度似乎被忽略。
有人有解决此问题的方法吗?
答案 0 :(得分:0)
AFAIK更改窗口的显示方式和/或其大小,您应该直接实施ArrangeOverride
或直接设置Height
和Width
(例如在Loaded
事件中handlet)...
编辑 - 根据评论:
在运行时应用XAML可能会打开几个安全问题,所以我建议不要这样做,或者至少实施一些安全措施来防止动态加载的XAML搞乱应用程序......说:
This MS Connect entry不是完全相同的问题,但不知何故相关并暗示WPF 4中可能存在错误。