如何将实例从主窗口发送到用户控件 [英] How to Send Instance from Main Windows to User Control

问题描述

目标：

为用户控制1和2减少紧耦合并增加松耦合。



问题：

是否可以从主窗口向用户控件1和2发送一些实例？

如果是，您是否有关于它的示例或推荐链接？



信息：

- 我正在使用VS 2013



Xaml代码：

Goal:
Reduce tight coupling and increase loose coupling for user control 1 and 2.

Problem:
Is it possible to send some instance from main windows to user control 1 and 2?
If yes, do you have a example or recommended link about it?

Information:
- I'm using VS 2013

Xaml code:

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:usercontrol_menu="clr-namespace:usercontrol_menu;assembly=usercontrol_menu" xmlns:usercontrol_kassa="clr-namespace:usercontrol_kassa;assembly=usercontrol_kassa" x:Class="main_system.MainWindow"
        Title="MainWindow" Height="900" Width="1300         ">
    <Grid>
        <Frame x:Name="mainFrame"/>
        <ContentControl x:Name="cc_content" Content="ContentControl" HorizontalAlignment="Left" Margin="482,144,-228,0" VerticalAlignment="Top" Height="298" Width="1038"/>
        <usercontrol_menu:UserControl1 HorizontalAlignment="Left" VerticalAlignment="Top"/>
        <usercontrol_kassa:UserControl1 HorizontalAlignment="Left" Margin="10,344,0,0" VerticalAlignment="Top"/>
    </Grid>
</Window>

推荐答案

您好，



只需定义网格区域并使用Place-Holders（ ContentPresenter ）：

Hi,

Just define the Grid regions and use "Place-Holders" (ContentPresenter):

<Window x:Class="WpfApplication12.MainWindow"

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

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

        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <ContentPresenter x:Name="placeHolder1" Grid.Column="0" />
        <ContentPresenter x:Name="placeHolder2"  Grid.Column="1"/>
    </Grid>
</Window>

/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    public void SetControlToPlaceHolder(E_Region region, UserControl control)
    {
        switch (region)
        {
            case E_Region.e_Place1:
                this.placeHolder1.Content = control;
                break;
            case E_Region.e_Place2:
                this.placeHolder2.Content = control;
                break;
        }
    }
}

public enum E_Region
{
    e_Place1 = 0,
    e_Place2 = 1,
}

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