wpf datagrid 滚动条（wpf datagrid自动滚动）

在WPF中，如果DataGrid里使用了模板列，当拖动滚动条时，往往会出现列表内容显示混乱的情况。解决方法就是在Binding的时候给UpdateSourceTrigger赋值。

123456789101112131415161718192021222324252627 <Grid><Grid.RowDefinitions><RowDefinition Height="25"></RowDefinition><RowDefinition></RowDefinition></Grid.RowDefinitions><Button Height="23" Click="Button_Click" Content="Click" Grid.Row="0"></Button><DataGrid Name="dgStudent" AutoGenerateColumns="False" IsEnabled="True" Grid.Row="1"EnableColumnVirtualization="True" EnableRowVirtualization="True"><DataGrid.Columns><DataGridTextColumn Header="Name" Binding="{Binding Name}" Width="80"></DataGridTextColumn><DataGridTemplateColumn Header="Age" Width="70"><DataGridTemplateColumn.CellTemplate><DataTemplate><TextBox Margin="5" Text="{Binding Age, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn><DataGridTemplateColumn Header="Course" Width="100"><DataGridTemplateColumn.CellTemplate><DataTemplate><ComboBox Margin="5" ItemsSource="{Binding CourseSource}" Text="{Binding Course, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></ComboBox></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid></Grid>

后台代码如下：

12345678910111213141516171819202122 public class Student{public string Name { get; set; }public string Age { get; set; }public List<string> CourseSource { get; set; } = new List<string>() { "C", "C++", "C#" };public string Course { get; set; }}private void Button_Click(object sender, RoutedEventArgs e){var students = new List<Student>();for (int i = 1; i <= 50; i++){var student = new Student(){Name = $"student{i}"};students.Add(student);}this.dgStudent.ItemsSource = null;this.dgStudent.ItemsSource = students;}