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~~

原文地址：https://www.cnblogs.com/lonelyxmas/p/12075454.html