初始网格行高不起作用 [英] Init grid row height doesn't work

问题描述

这是我简单的try-it应用程序，它创建了一个2行的网格。第一行的高度绑定到一个属性。我分配给它的值只在运行时起作用。我试图让它在设计时也可以工作，但我没有这样做（我使用这个线程来写我的应用程序）。

请帮我看看我想念的。谢谢！

我想动态设置顶部网格行的高度，即。 Grid.Row =0，作为标题栏高度。在我的应用程序的某个地方，视图加载并重叠标题栏。 你正在尝试做一个非常奇怪的诡计，这不应该工作。尝试进行以下更改。

MainWindow.xaml.cs - 尽量始终让代码隐藏起来。

  namespace WpfTryIt 
 {
 ///< summary> 
 /// MainWindow.xaml的交互逻辑
 ///< / summary> 
 public partial class MainWindow：Window 
 {
 public MainWindow（）
 {
 InitializeComponent（）; 
 
 
 
 
 
 
  MainWindow.xaml  
 < Window x：Class =WpfTryIt.MainWindow
 xmlns =http：/ /schemas.microsoft.com/winfx/2006/xaml/presentation
 xmlns：x =http://schemas.microsoft.com/winfx/2006/xaml
 Title =MainWindow
 
 xmlns：s =clr-namespace：WpfTryIt
> 
< Window.DataContext> 
< s：FakeDataContext>< / s：FakeDataContext> 
< /Window.DataContext> 
 
 
< Button Content ={Binding Path = BindingHeight}/> 
 
< / Window> 
  
还有一个新的独立数据上下文类，根据模式的不同有所不同：
 使用System; 
使用System.Collections.Generic; 
使用System.Linq; 
使用System.Text; 
使用System.ComponentModel; 
使用System.Windows; 
 
 namespace WpfTryIt 
 {
 public class FakeDataContext 
 {
 public int BindingHeight 
 {
 get 
 {
 //检查设计模式。 
 if（（bool）（DesignerProperties.IsInDesignModeProperty.GetMetadata（typeof（DependencyObject））。DefaultValue））
 {
 //设计模式
 return 100; 
} 
 else 
 {
 return 200; 
} 
} 
} 
} 
} 
  
 
this is my simple try-it application that create a grid with 2 rows. The 1st row's height is bound to a properties. The value I assigned to it only works at run-time. I tried to make it also work when design-time but I failed to do that (I used this thread to write my app).

Please help me to see what I miss. Thank you!

[Edit]

The reason why I do this is that I want to set dynamically the height of the top grid row, ie. Grid.Row="0", to be the title bar height. Somewhere in my app, the view loaded and overlap the title bar.
解决方案
You're trying to do a very strange trick, which is not supposed to work. Try to make the following changes.

MainWindow.xaml.cs -- try to always keep you code-behind clear.
namespace WpfTryIt
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
}
MainWindow.xaml
<Window x:Class="WpfTryIt.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"

        xmlns:s ="clr-namespace:WpfTryIt"
        >
    <Window.DataContext>
        <s:FakeDataContext></s:FakeDataContext>
    </Window.DataContext>


        <Button Content="{Binding Path=BindingHeight}"/>

</Window>
And a new separate data context class, which behave different depending on the mode:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Windows;

namespace WpfTryIt
{
    public class FakeDataContext
    {
        public int BindingHeight
        {
            get
            {
                // Check for design mode. 
                if ((bool)(DesignerProperties.IsInDesignModeProperty.GetMetadata(typeof(DependencyObject)).DefaultValue))
                {
                    //in Design mode
                    return 100;
                }
                else
                {
                    return 200;
                }
            }
        }
    }
}


                        
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