WPF - 如何获取 MainWindow 实例? [英] WPF - How do I get the MainWindow instance?

问题描述

我在 MainWindow.xaml.cs 中有这个:

I have this in MainWindow.xaml.cs:

public partial class MainWindow : Window
{
    public double _frameCounter = 0;\;

对 WPF 和 C# 非常陌生，但在我看来，下面的 (MainWindow.xaml) 是实例化此类的地方:

Very new to WPF and C#, but the below (MainWindow.xaml) appears to me to be where this class is being instantiated:

<Window x:Class="CompositionTargetSample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Composition Target Rendering Sample"
        Width="768"
        Height="512">

回到 MainWindow.xaml.cs，在 MainWindow 类之外，我想引用在 MainWindow.xaml 中实例化的对象的 _frameCounter 字段，但不知道如何处理该 MainWindow 对象.

Back in MainWindow.xaml.cs, outside of the MainWindow class, I want to reference the _frameCounter field of the object instantiated in MainWindow.xaml, but don't know how to address that MainWindow object.

推荐答案

您可以使用

Application.Current.MainWindow._frameCounter

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