首页> C#>如何做到既过滤和分组列表视图从SQL
作者：互联网
我如何让我的Listview进行分组和过滤,因为我只能一次执行一件事情.我几乎已经尝试了所有可能的方法,但是没有一个起作用.当我删除
public string SelectedParam { get { return _selectedParam; } set { _selectedParam = value; OnPropertyChanged("SelectedParam");
if (_selectedParam == "Krydsmål") { BindData(); } else { hjuldata.ItemsSource = FilterKategori().Tables[0].DefaultView; ; } } }
则分组有效,但过滤不起作用
我想知道是否可以使用sql进行填充,而不是同时进行填充和过滤,然后让listview像您手动添加项目一样进行过滤
我的组合框用于过滤：
<ComboBox x:Name="Krydsmålbox" Foreground="#FFEAEAEA" Background="#FF303030" FontSize="12"
Style="{StaticResource ComboBoxTest2}" ItemTemplate="{StaticResource cmbTemplate2}"
ItemsSource="{Binding}" SelectedValuePath="Krydsmålene"
SelectedValue = "{Binding SelectedParam, RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type Window}},UpdateSourceTrigger=PropertyChanged}" BorderBrush="#FF303030" Height="40" DockPanel.Dock="Top" Margin="586,42,379,0"/>
列表显示
<ListView x:Name="hjuldata" BorderBrush="#FF303030" Foreground="#FF00FB0B" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto" Background="#FF303030" ItemsSource="{Binding}" Margin="-160,242,11,22" Grid.ColumnSpan="6" Grid.Row="3" Style="{DynamicResource ListViewStyle2}" DockPanel.Dock="Bottom" Height="576">
<ListView.View>
<GridView>
<GridView.ColumnHeaderContainerStyle>
<Style TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Background" Value="Black" />
<Setter Property="Foreground" Value="#FFEAEAEA"/>
<Setter Property="FontWeight" Value="Bold" />
</Style>
</GridView.ColumnHeaderContainerStyle>
<GridViewColumn Header="" >
<GridViewColumn.CellTemplate>
<DataTemplate>
<Image Source="{Binding Billed, Converter={StaticResource nullImageConverter}}" Width="20" Height="20" Stretch="Fill" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0,0,15,0"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Model" Width="140" >
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Model}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Årgang" Width="100">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Årgang}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Motor Type" Width="150" >
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding [Motor Type]}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Krydsmålet}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Centerhul}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="ET" Width="auto">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding ET}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Bolter" Width="100">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Bolter}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Dæk" Width="300">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Dæk}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Fælge" Width="200">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock x:Name="Txt" Text="{Binding Fælge}" Foreground="#FF00FB0B" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
分组方式
<ListView.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Expander IsExpanded="False" BorderBrush="#FFEAEAEA" BorderThickness="0,0,0,1" >
<Expander.Header>
<StackPanel Orientation="Horizontal" DataContext="{Binding Items}">
<Image Source="{Binding Billed, Converter={StaticResource nullImageConverter}}" Width="20" Height="20" Stretch="Fill" VerticalAlignment="Center" Margin="0,0,15,0"/>
<TextBlock Text="{Binding Mærke}" FontWeight="Bold" Foreground="#FFEAEAEA" FontSize="22" VerticalAlignment="Bottom" />
<TextBlock Text="{Binding Krydsmålene}" FontWeight="Bold" Foreground="#FFFBFB00" FontSize="22" VerticalAlignment="Bottom" Margin="0,0,150,0" TextAlignment="Center" />
</StackPanel>
</Expander.Header>
<ItemsPresenter />
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
</ListView>
CS：
public partial class MainWindow : Window, INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private string _selectedParam;
public MainWindow()
{
InitializeComponent();
BindData();
ICollectionView dataView = CollectionViewSource.GetDefaultView(hjuldata.ItemsSource);
dataView.GroupDescriptions.Add(new PropertyGroupDescription("Mærke"));
}
public event PropertyChangedEventHandler PropertyChanged;
[NotifyPropertyChangedInvocator]
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
public string SelectedParam { get { return _selectedParam; } set { _selectedParam = value; OnPropertyChanged("SelectedParam");
if (_selectedParam == "Krydsmål") { BindData(); } else { hjuldata.ItemsSource = FilterKategori().Tables[0].DefaultView; ; } } }
private void BindData()
{
hjuldata.ItemsSource = Kategori().Tables[0].DefaultView;
}
public DataSet Kategori()
{
Data = @"Select ps.Mærket AS Mærke, P.DataID, P.Billed, P.Model, P.Årgang, P.[Motor Type], P.Krydsmålet, P.Centerhul, P.ET,P.Bolter, P.Dæk, P.Fælge ,PS.Krydsmålene from Data.Hjuldata P inner join Data.Mærke PS on P.MærkeID = PS.MærkeID ORDER BY ps.Mærket";
//SQL statement to fetch entries from Hjuldata
DataSet dsdata = new DataSet();
//Open SQL Connection
using (conn = new SqlConnection(connStrings))
{
conn.Open();
//Initialize command object
using (cmd = new SqlCommand(Data, conn))
{
SqlDataAdapter adapters = new SqlDataAdapter(cmd);
//Fill the result set
adapters.Fill(dsdata);
conn.Close();
}
}
return dsdata;
}
public DataSet FilterKategori()
{
Data = @"Select ps.Mærket AS Mærke, P.DataID, P.Billed, P.Model, P.Årgang, P.[Motor Type], P.Krydsmålet, P.Centerhul, P.ET,P.Bolter, P.Dæk, P.Fælge ,PS.Krydsmålene from Data.Hjuldata P inner join Data.Mærke PS on P.MærkeID = PS.MærkeID WHERE Krydsmålet = @param1";
//SQL statement to fetch entries from products
DataSet dsdata = new DataSet();
//Open SQL Connection
using (conn = new SqlConnection(connStrings))
{
conn.Open();
//Initialize command object
using (cmd = new SqlCommand(Data, conn))
{
cmd.Parameters.AddWithValue("@param1", SelectedParam);
SqlDataAdapter adapters = new SqlDataAdapter(cmd);
//Fill the result set
adapters.Fill(dsdata);
conn.Close();
}
}
return dsdata;
}
有人可以帮我吗？
解决方法:
我认为这是你应该读的东西
How to: Group, Sort, and Filter Data in the DataGrid Control
我已经测试过了,它可以与您的数据结构一起使用,您不必对过滤进行任何操作,只需更改分组部分和colectionview
标签：grouping,wpf,c,sql-server,filtering 来源： https://codeday.me/bug/20191118/2029853.html