Xceed DataGrid重置滚动条位置 [英] Xceed DataGrid Resets ScrollBar Position

问题描述

当我在Xceed DataGridControl中更改ItemsSource时，我的垂直和水平滚动条立即重置为顶部/左侧.

When I change the ItemsSource in the Xceed DataGridControl my vertical and horizontal scroll bars immediately get reset to the top/left.

有什么想法可以防止这种情况发生吗?

Any ideas how to prevent that from happening?

推荐答案

我终于修复并弄清楚了为什么每次刷新DataGrid时滚动条都跳到顶部/左侧.

I finally fixed and figured out why my scrollbars jump to the top/left each time my DataGrid refreshes.

显示绑定到视图而不是实际数据源(DataView)的XAML，因此每次刷新都会替换视图和数据源.绑定到DataView的结果是，滚动条不再跳转，并且网格现在像以前一样立即填充1-2秒.

Turns out the XAML binded to the View instead of to an actual datasource (DataView), thus each refresh replaced the view and the datasource. As a result of binding to a DataView, my scrollbars no longer jump, and my grid now populates instantly as before it tool 1-2 seconds.

我包括了代码更改，以防将来对其他人有所帮助.

I included my code changes in case that helps others in the future.

旧代码绑定到视图:

 <xcdg:DataGridControl Name="FileGrid"
                       AutoCreateColumns="False"
                       SelectionMode="Extended" 
                       ReadOnly="True"         
                       ItemsSource="{Binding FileGridDataSource}"
                       ItemScrollingBehavior="Immediate" 
                       NavigationBehavior="RowOnly">
 </xcdg:DataGridControl>

 public sealed class DataGridViewModel : ViewModelBase
 {
   public DataGridCollectionView FileGridDataSource
   {
      get
      {
         return _fileGridDataBoundSource;
      }
      set
      {
         _fileGridDataBoundSource = value;
         NotifyPropertyChanged("FileGridDataSource");
      }
   }
 }

新代码绑定到DataView:

New code binds to a DataView:

<Window.Resources>
  <xcdg:DataGridCollectionViewSource x:Name="FileGridView"
      x:Key="fileView"
      Source="{Binding Path=GridData}"
      AutoFilterMode="And"
      AutoCreateItemProperties="True"
      AutoCreateForeignKeyDescriptions="True"
      DefaultCalculateDistinctValues="False"/>
</Window.Resources>

<Grid>
  <xcdg:DataGridControl Name="FileGrid"
                        AutoCreateColumns="False"
                        SelectionMode="Extended" 
                        ReadOnly="True"         
                        ItemsSource="{Binding Source={StaticResource fileView}}" 
                        ItemScrollingBehavior="Immediate"  
                   NavigationBehavior="RowOnly">
  </xcdg:DataGridControl>
</Grid>

public sealed class DataGridViewModel : ViewModelBase
{
   private DataTable _dt = new DataTable("MyDataTable");
   public DataView GridData
   {
      get
      {
         return _dt.DefaultView;
      }
   }
}

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