何我在WPF用户自定义控件中修改控件的属性？ [英] Ho do I modify the property of a control in WPF user custom control?

问题描述

大家好，

我正在尝试编写一个WPF用户控件（输出是一个DLL），这是其他WPF控件的集合。

我添加到项目我需要的控件，我想在我的用户控件中公开它们的一些属性，但我注意到我无法调用它们！

  Imports  System.Windows.Media 
  Imports  System.Windows.Media.Media3D 
  Imports  HelixToolkit.Wpf 
  Imports  System.Windows.Media.Drawing 
 
 公开 类 viewer 
 
 公共 属性 BackColor 作为颜色
 获取 
 返回 Canvas1.Background ' <  - 这不起作用，Canvas1无法访问！ 
 结束 获取 
 设置（ ByVal 颜色作为颜色）
 Canvas1.removed = color ' < ;  - 这不起作用，Canvas1无法访问！ 
 结束 设置 
 结束 属性 
 
 结束 班级 

请帮忙！我无法理解该怎么做，我没有找到任何例子！



谢谢，

Giovanni

解决方案

查看器是用户控件/窗口的代码吗？如果不是，那么你不能在这样的控件上设置属性，因为它实际上并不是该视图的一部分。



修改后显示通话to InitializeComponent（）

  Imports  System.Windows.Media 
  Imports  System.Windows.Media.Media3D 
  Imports  HelixToolkit.Wpf 
  Imports  System .Windows.Media.Drawing 
 
 公共 类 viewer 
 < span class =code-keyword>公开  Sub  新（）
 InitializeComponent（）
 结束  Sub  
 
 公共 属性 BackColor（） As 颜色
 获取 
 返回 Canvas1.Background 
 结束 < span class =code-keyword>获取 
 设置 
 Canvas1.removed = value 
 结束 设置 
 结束 属性 
 
 结束 类 

解决了！ XAML代码的第一行必须报告类的名称：



< usercontrol x：class =viewerxmlns：x =＃unknown> ;

xmlns =http://schemas.microsoft.com/winfx/2006/xaml/presentation

xmlns：x =http://schemas.microsoft .com / winfx / 2006 / xaml

xmlns：mc =http://schemas.openxmlformats.org/markup-compatibility/2006

xmlns：d = http://schemas.microsoft.com/expression/blend/2008

mc：Ignorable =d

d：DesignHeight =300d：DesignWidth = 300xmlns：h =http://helixtoolkit.codeplex.com>

< grid>

...









然后所有控件都可以访问！

Hi all,
I'm trying to write a WPF user control (output is a DLL) which is an assemblage of other WPF controls.
I added to the project the controls I need and I want to expose some of their properties in my user control, but I noticed that I cannot call them!

Imports System.Windows.Media
Imports System.Windows.Media.Media3D
Imports HelixToolkit.Wpf
Imports System.Windows.Media.Drawing

Public Class viewer

    Public Property BackColor As Color
        Get
            Return Canvas1.Background ' <- this does not work, Canvas1 not accessible!
        End Get
        Set(ByVal color As Color)
            Canvas1.removed=color ' <- this does not work, Canvas1 not accessible!
        End Set
    End Property

End Class

Please help! I cannot inderstand what to do and I didn't find any example!

Thanks,
Giovanni

解决方案

Is viewer the code behind for your user control/window? If it's not, then you can't set a property on a control like this because it's not actually part of that view.

[Edit]Amended to show the call to InitializeComponent()

Imports System.Windows.Media
Imports System.Windows.Media.Media3D
Imports HelixToolkit.Wpf
Imports System.Windows.Media.Drawing

Public Class viewer
	Public Sub New()
		InitializeComponent()
	End Sub

	Public Property BackColor() As Color
		Get
			Return Canvas1.Background
		End Get
		Set
			Canvas1.removed = value
		End Set
	End Property

End Class

Solved! the first row of the XAML code must report the name of the class:

<usercontrol x:class="viewer" xmlns:x="#unknown">
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" xmlns:h="http://helixtoolkit.codeplex.com">
<grid>
...




and then all the controls will be accessible!

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