[英]WPF MVVM - How can I pass two variables from the ViewModel associated with the first window to the second ViewModel associated with the second window?
我不想使用 Prism 或 MVVM Light 解決方案,想將兩個參數傳遞給第二個 window? 我怎么能那樣做? 我一直在尋找有關此主題的一些信息,但不幸的是,其中大多數都使用包...
嘗試這個:
App.xaml
<Application.Resources>
<vm:MainViewModel x:Key="YourViewModel" />
</Application.Resources>
主窗口.xaml
<Window x:Class="ABC.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ABC"
DataContext="{StaticResource YourViewModel}"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<TextBlock Text="{Binding SomeVar}"/>
</Grid>
</Window>
SecondWindow.xaml
<Window x:Class="ABC.SecondWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ABC"
DataContext="{StaticResource YourViewModel}"
mc:Ignorable="d"
Title="SecondWindow" Height="450" Width="800">
<Grid>
<TextBox Text="{Binding SomeVar}"/>
</Grid>
</Window>
我想你可以在第二個 window 的構造函數中發送參數,無論你在哪里創建 window。
var newwin = new SecondWindow("second param is int", 42 );
newwin.Show();
然后為您的 window 創建另一個構造函數:
public SecondWindow(string a, int b) : this()
{
var secondVM = (SecondViewModel)DataContext;
secondVM.IAmSendingYouTwoParams( a,b);
...
}
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