WPF 精修篇 DataGrid 筛选

原文: WPF 精修篇 DataGrid 筛选

DataGrid也可以分组 但是用的地方不多 就没写

筛选还是可以的 比如Datagrid数据量比较大 要做数据筛选

贴码

  
  
<DataGrid x:Name= "datagrid" AutoGenerateColumns= "False" HorizontalContentAlignment= "Stretch" VerticalContentAlignment= "Stretch">
<DataGrid.Columns>
<DataGridTextColumn Binding= "{Binding Name}" Header= "Name"></DataGridTextColumn>
<DataGridTextColumn Binding= "{Binding Address}" Header= "Address"></DataGridTextColumn>
<DataGridTextColumn Binding= "{Binding Age}" Header= "Age"></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
<CheckBox x:Name= "sort" Content= "排序" HorizontalAlignment= "Left" Margin= "466,300,0,0" VerticalAlignment= "Top" Checked= "CheckBox_Checked"/>
<TextBox x:Name= "TxT" HorizontalAlignment= "Left" Height= "25" Margin= "402,5,0,0" TextWrapping= "Wrap" VerticalAlignment= "Top" Width= "115" TextChanged= "TextBox_TextChanged"/>
<TextBlock HorizontalAlignment= "Left" Height= "20" Margin= "336,8,0,0" TextWrapping= "Wrap" Text= "筛选内容" VerticalAlignment= "Top" Width= "61"/>


</Grid>
 
 

  
  
public MainWindow()
{
InitializeComponent();

Preson = new ObservableCollection<Preson>() {
new Preson() { Name = "慧哥1", Address = "大连1", Age = 31 },
new Preson() { Name = "慧哥2", Address = "大连2", Age = 32 },
new Preson() { Name = "慧哥3", Address = "大连3", Age = 33 },
new Preson() { Name = "慧哥4", Address = "大连4", Age = 34 },
new Preson() { Name = "慧哥5", Address = "大连5", Age = 35 },
new Preson() { Name = "123", Address = "大连6", Age = 12 },
new Preson() { Name = "444", Address = "大连7", Age = 14 },
new Preson() { Name = "222", Address = "大连8", Age = 33 },
new Preson() { Name = "1312", Address = "大连9", Age = 22 }
};

datagrid.ItemsSource = Preson;

}



public ObservableCollection<Preson> Preson
{
get { return (ObservableCollection<Preson>)GetValue(PresonProperty); }
set { SetValue(PresonProperty, value); }
}

// Using a DependencyProperty as the backing store for Preson. This enables animation, styling, binding, etc...
public static readonly DependencyProperty PresonProperty =
DependencyProperty.Register( "Preson", typeof(ObservableCollection<Preson>), typeof(MainWindow), new PropertyMetadata( null));

private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
var cvs = CollectionViewSource.GetDefaultView(datagrid.ItemsSource);
if(cvs!= null&&cvs.CanSort)
{
cvs.SortDescriptions.Clear();
if (sort.IsChecked == true)
{
cvs.SortDescriptions.Add( new System.ComponentModel.SortDescription( "Age", System.ComponentModel.ListSortDirection.Descending));
}

}
}

private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
{
var cvs = CollectionViewSource.GetDefaultView(datagrid.ItemsSource);
if (cvs != null && cvs.CanFilter)
{
cvs.Filter = OnFilterApplied;
}
}

private bool OnFilterApplied(object obj)
{
if (obj is Preson)
{
var text = TxT.Text.ToLower();
return (obj as Preson).Name.ToLower().Contains(text)
|| (obj as Preson).Address.ToLower().Contains(text);
}
return false;
}






}
 
 

啊~ 这里包含排序 那就包含吧~~