C# 从childwindow添加某些项目后冻结主窗口
我正在使用mvvm和WCF服务开发Silverlight 4 每当我将项目从子窗口添加到主窗口时。但同时主窗口自动进入禁用模式。我想主窗口会自动冻结 子窗口视图模型C# 从childwindow添加某些项目后冻结主窗口,c#,.net,silverlight,entity-framework,mvvm,C#,.net,Silverlight,Entity Framework,Mvvm,我正在使用mvvm和WCF服务开发Silverlight 4 每当我将项目从子窗口添加到主窗口时。但同时主窗口自动进入禁用模式。我想主窗口会自动冻结 子窗口视图模型 public class AddFormFieldInformationViewModel : ViewModelBase { private FieldInformationViewModel _FieldInformationViewModel; public FieldInformationViewMod
public class AddFormFieldInformationViewModel : ViewModelBase
{
private FieldInformationViewModel _FieldInformationViewModel;
public FieldInformationViewModel FieldInformationViewModel
{
get { return _FieldInformationViewModel; }
set
{
_FieldInformationViewModel = value;
RaisePropertyChanged("FieldInformationViewModel");
}
}
public void MoveSave(object obj)
{ this.FieldInformationViewModel.SelectedFormFields = FieldInformationModel;
ResultHandler(true);
}
public class FieldInformationViewModel : ViewModelBase
{ private void executeOpenChildWindow(object parameter)
{
AddExistingFormFieldCategoryView cw = new AddExistingFormFieldCategoryView();
((AddFormFieldInformationViewModel)cw.DataContext).FieldInformationViewModel = this;
cw.Show();
}
}
公共操作ResultHandler{get;set;}
}
ChildWindow.xaml.cs文件
public partial class AddExistingFormFieldCategoryView : ChildWindow
{
private AddFormFieldInformationViewModel vm;
public AddExistingFormFieldCategoryView()
{
InitializeComponent();
vm = new AddFormFieldInformationViewModel();
this.DataContext = vm;
vm.ResultHandler = result => { if (result) { Close(); } };
}
}
主窗口视图模型
public class AddFormFieldInformationViewModel : ViewModelBase
{
private FieldInformationViewModel _FieldInformationViewModel;
public FieldInformationViewModel FieldInformationViewModel
{
get { return _FieldInformationViewModel; }
set
{
_FieldInformationViewModel = value;
RaisePropertyChanged("FieldInformationViewModel");
}
}
public void MoveSave(object obj)
{ this.FieldInformationViewModel.SelectedFormFields = FieldInformationModel;
ResultHandler(true);
}
public class FieldInformationViewModel : ViewModelBase
{ private void executeOpenChildWindow(object parameter)
{
AddExistingFormFieldCategoryView cw = new AddExistingFormFieldCategoryView();
((AddFormFieldInformationViewModel)cw.DataContext).FieldInformationViewModel = this;
cw.Show();
}
}
将项目从子窗口添加到主窗口后,有时我的主窗口会自动冻结。您好,这是您遇到的一个错误,请参见下面的示例。我遇到同样的问题,您必须手动启用主页的显示:
private static void ShowError(string message, string details)
{
ErrorWindow error = new ErrorWindow(message, details);
error.Closed += new EventHandler(error_Closed);
error.Show();
}
static void error_Closed(object sender, EventArgs e)
{
Application.Current.RootVisual.SetValue(Control.IsEnabledProperty, true);
}
您可以将ChildWindow子类化,并显式地将RootVisual设置为enabled
使用System.Windows.Ink;
使用System.Windows.Input;
使用System.Windows.Media;
使用System.Windows.Media.Animation;
使用System.Windows.Shapes;
命名空间DST_公共_Silverlight_控件
{
///
///ChildWindow中的错误有时会使应用程序处于禁用状态。
///
公共类ChildWindowEx:ChildWindow
{
关闭时受保护的覆盖无效(事件参数e)
{
基础。一旦关闭(e);
Application.Current.RootVisual.SetValue(Control.IsEnabledProperty,true);
}
}
}
然后在xaml中使用新类型而不是ChildWindow,如下所示:
<slcommon:ChildWindowEx
x:Class="DST.AvSyncMonitor.Silverlight.Gui.ErrorWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:slcommon="clr-namespace:DST_Common_Silverlight_Controls;assembly=DST.Common.Silverlight.Controls"
xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"
Title="Error">
<Grid x:Name="LayoutRoot" Width="540">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock x:Name="IntroductoryText" Grid.Row="0" Margin="0"
Text="An unknown error was encountered. Please contact your administrator for more information."/>
<StackPanel x:Name="ContentStackPanel" Grid.Row="2" Margin="0,6,0,0">
<TextBlock x:Name="LabelText" TextWrapping="Wrap" Margin="0,0,0,2"
Text="Error details"/>
<TextBox x:Name="ErrorTextBox" Height="90" TextWrapping="Wrap" IsReadOnly="True"
VerticalScrollBarVisibility="Auto"/>
</StackPanel>
<Button x:Name="OKButton" Grid.Row="3" Click="OKButton_Click"
Width="75" Height="23" HorizontalAlignment="Right" Margin="0,10,0,0"
TabIndex="0" Content="OK"/>
</Grid>
</slcommon:ChildWindowEx>