标签：xmlns finally grid ali mina epo partial stat pen
Follow this steps for adding splash screen into WPF application in Visual Studio:
If your application is lightweight and simple, it will launch very fast, and with similar speed will appear and disappear splash screen.
As soon as splash screen disappearing after Application.Startup method completed, you can simulate application launch delay by following this steps:
using System.Threading;OnStartup method and add Thread.Sleep(3000); inside it:
Code should look like:
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading;
using System.Windows;
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
Thread.Sleep(3000);
}
}
}
WPF does not support displaying anything other than an image as a splash screen out-of-the-box, so we‘ll need to create a Window which will serve as a splash screen. We‘re assuming that we‘ve already created a project containing MainWindow class, which is to be the application main window.
First off we add a SplashScreenWindow window to our project:
<Window x:Class="SplashScreenExample.SplashScreenWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowStartupLocation="CenterScreen"
WindowStyle="None"
AllowsTransparency="True"
Height="30"
Width="200">
<Grid>
<ProgressBar IsIndeterminate="True" />
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center">Loading...</TextBlock>
</Grid>
</Window>
Then we override the Application.OnStartup method to show the splash screen, do some work and finally show the main window (App.xaml.cs):
public partial class App
{
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
//initialize the splash screen and set it as the application main window
var splashScreen = new SplashScreenWindow();
this.MainWindow = splashScreen;
splashScreen.Show();
//in order to ensure the UI stays responsive, we need to
//do the work on a different thread
Task.Factory.StartNew(() =>
{
//simulate some work being done
System.Threading.Thread.Sleep(3000);
//since we‘re not on the UI thread
//once we‘re done we need to use the Dispatcher
//to create and show the main window
this.Dispatcher.Invoke(() =>
{
//initialize the main window, set it as the application main window
//and close the splash screen
var mainWindow = new MainWindow();
this.MainWindow = mainWindow;
mainWindow.Show();
splashScreen.Close();
});
});
}
}
Lastly we need to take care of the default mechanism which shows the MainWindow on application startup. All we need to do is to remove the StartupUri="MainWindow.xaml" attribute from the root Application tag in App.xaml file.
WPF does not support displaying anything other than an image as a splash screen out-of-the-box, so we‘ll need to create a Window which will serve as a splash screen. We‘re assuming that we‘ve already created a project containing MainWindow class, which is to be the application main window.
First off we add a SplashScreenWindow window to our project:
<Window x:Class="SplashScreenExample.SplashScreenWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowStartupLocation="CenterScreen"
WindowStyle="None"
AllowsTransparency="True"
Height="30"
Width="200">
<Grid>
<ProgressBar x:Name="progressBar" />
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center">Loading...</TextBlock>
</Grid>
</Window>
Then we expose a property on the SplashScreenWindow class so that we can easily update the current progress value (SplashScreenWindow.xaml.cs):
public partial class SplashScreenWindow : Window
{
public SplashScreenWindow()
{
InitializeComponent();
}
public double Progress
{
get { return progressBar.Value; }
set { progressBar.Value = value; }
}
}
Next we override the Application.OnStartup method to show the splash screen, do some work and finally show the main window (App.xaml.cs):
public partial class App : Application
{
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
//initialize the splash screen and set it as the application main window
var splashScreen = new SplashScreenWindow();
this.MainWindow = splashScreen;
splashScreen.Show();
//in order to ensure the UI stays responsive, we need to
//do the work on a different thread
Task.Factory.StartNew(() =>
{
//we need to do the work in batches so that we can report progress
for (int i = 1; i <= 100; i++)
{
//simulate a part of work being done
System.Threading.Thread.Sleep(30);
//because we‘re not on the UI thread, we need to use the Dispatcher
//associated with the splash screen to update the progress bar
splashScreen.Dispatcher.Invoke(() => splashScreen.Progress = i);
}
//once we‘re done we need to use the Dispatcher
//to create and show the main window
this.Dispatcher.Invoke(() =>
{
//initialize the main window, set it as the application main window
//and close the splash screen
var mainWindow = new MainWindow();
this.MainWindow = mainWindow;
mainWindow.Show();
splashScreen.Close();
});
});
}
}
Lastly we need to take care of the default mechanism which shows the MainWindow on application startup. All we need to do is to remove the StartupUri="MainWindow.xaml" attribute from the root Application tag in App.xaml file.
https://sodocumentation.net/wpf/topic/3948/creating-splash-screen-in-wpf
WPF does not support displaying anything other than an image as a splash screen out-of-the-box, so we‘ll need to create a Window which will serve as a splash screen. We‘re assuming that we‘ve already created a project containing MainWindow class, which is to be the application main window.
First off we add a SplashScreenWindow window to our project:
<Window x:Class="SplashScreenExample.SplashScreenWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowStartupLocation="CenterScreen"
WindowStyle="None"
AllowsTransparency="True"
Height="30"
Width="200">
<Grid>
<ProgressBar IsIndeterminate="True" />
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center">Loading...</TextBlock>
</Grid>
</Window>
Then we override the Application.OnStartup method to show the splash screen, do some work and finally show the main window (App.xaml.cs):
public partial class App
{
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
//initialize the splash screen and set it as the application main window
var splashScreen = new SplashScreenWindow();
this.MainWindow = splashScreen;
splashScreen.Show();
//in order to ensure the UI stays responsive, we need to
//do the work on a different thread
Task.Factory.StartNew(() =>
{
//simulate some work being done
System.Threading.Thread.Sleep(3000);
//since we‘re not on the UI thread
//once we‘re done we need to use the Dispatcher
//to create and show the main window
this.Dispatcher.Invoke(() =>
{
//initialize the main window, set it as the application main window
//and close the splash screen
var mainWindow = new MainWindow();
this.MainWindow = mainWindow;
mainWindow.Show();
splashScreen.Close();
});
});
}
}
Lastly we need to take care of the default mechanism which shows the MainWindow on application startup. All we need to do is to remove the StartupUri="MainWindow.xaml" attribute from the root Application tag in App.xaml file.
https://riptutorial.com/wpf/example/25399/creating-custom-splash-screen-window
标签：xmlns finally grid ali mina epo partial stat pen
原文地址：https://www.cnblogs.com/DoNetCShap/p/14893504.html
