在线程中没法直接操做UI元素,能够经过线程的Dispatch.Invoke方法来更新UI界面。web
<Window 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:WpfApplication1" xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit" xmlns:System="clr-namespace:System;assembly=mscorlib" xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid" x:Class="WpfApplication1.MainWindow" mc:Ignorable="d" Title="MainWindow" Height="350" Width="525"> <StackPanel> <DataGrid x:Name="dataGrid" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/> <Button Content="Start" Name="btnTest" Click="btnTest_Click"></Button> <TextBlock Name="txtBlock" Text="ABC"></TextBlock> </StackPanel> </Window>
public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void btnTest_Click(object sender, RoutedEventArgs e) { Thread th = new Thread(ThreadDo); th.Start(); } private void ThreadDo() { Dispatcher.Invoke(() => { txtBlock.Text = "xyz"; btnTest.Content = "Started"; }); Thread.Sleep(5 * 1000); Dispatcher.Invoke(() => { txtBlock.Text = "abc"; btnTest.Content = "Stoped"; }); } }