我有一个XAML ImportPresenter，它连接到ComboBox ViewModel。我的XAML中有四个CashActivityTypeBAI个项目：
CashActivityTypesCombo CashActivityTypes，这是必然的
我的CashActivitiesBAI DataView BAICashActivites哪个绑定到CashActivitiesCombo
数据视图CashActivities哪个绑定到Presenter
数据视图。我已经包含了我的XAML和三个类：
ImportPresenter和Controller是我的ViewModel。有一个静态CashActivityTypes类，它用作我的模型，也连接到我的DataSet。
我的问题
当CashActivityTypeBAI ComboBox项目中的任何一个选择项目时，将过滤其各自的子DataView。但是，当更改CashActivityTypesCombo或CashActivity时，它会同时过滤两个<UserControl x:Class="Cash_Sheet_WPF.Views.Pages.CheckBAIPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Cash_Sheet_WPF.Views.Pages"
xmlns:UserControls="clr-namespace:Cash_Sheet_WPF.Views.UserControls"
xmlns:ViewModels="clr-namespace:Cash_Sheet_WPF.ViewModels"
mc:Ignorable="d"
d:DesignHeight="534" d:DesignWidth="1184">
<Grid>
<Grid.DataContext>
<ViewModels:ImportPresenter/>
</Grid.DataContext>
<Grid.Background>
<ImageBrush ImageSource="/Cash Sheet WPF;component/backgroundA.png" Stretch="UniformToFill"/>
</Grid.Background>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="44"/>
<RowDefinition Height="2*" MaxHeight="800"/>
<RowDefinition Height="24"/>
</Grid.RowDefinitions>
<UserControls:MainMenu Grid.Row="0" VerticalAlignment="Top"/>
<Grid Grid.Row="2" Margin="5,2,5,2" Width="Auto" Height="Auto" VerticalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="2*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="1*"/>
</Grid.RowDefinitions>
<Grid Grid.Column="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="2*"/>
</Grid.RowDefinitions>
<Label Grid.Column="0" Grid.Row="0" HorizontalAlignment="Right" Height="20" FontSize="9" Content="Cash Activity Type"/>
<ComboBox x:Name="CashActivityTypeBAI" Grid.Column="1" Grid.Row="0" Height="20" FontSize="9" ItemsSource="{Binding CashActivityTypes, UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="Type" SelectedValue="{Binding SelectedBAIType}" SelectedValuePath="Sequence"
SelectedIndex="{Binding CashActivityTypeIndex, UpdateSourceTrigger=PropertyChanged}" Margin="0,2,0,0"/>
<Label Grid.Column="0" Grid.Row="1" HorizontalAlignment="Right" Height="20" FontSize="9" Content="Cash Activity"/>
<Label Grid.Column="1" Grid.Row="1" Height="20" FontSize="9"
Content="{Binding SelectedActivity, UpdateSourceTrigger=PropertyChanged}"/>
<ComboBox x:Name="CashActivitiesBAI" Grid.Column="1" Grid.Row="1" Height="20" FontSize="9"
ItemsSource="{Binding BAICashActivities, UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="Activity"
SelectedValue="{Binding SelectedBAIActivity}"
SelectedValuePath="Sequence"
SelectedIndex="{Binding CashActivityIndex, UpdateSourceTrigger=PropertyChanged}" Margin="0,2,0,0"/>
</Grid>
<Grid Grid.Column="2" Margin="2,0,0,0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="2*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="24"/>
<RowDefinition Height="75"/>
<RowDefinition Height="24"/>
<RowDefinition Height="2*"/>
</Grid.RowDefinitions>
<Label Grid.Column="0" Grid.Row="0" Content="Individual Transactions" FontSize="9"/>
<Label Content="Cash Activity Type" FontSize="9" Grid.Row="1" Grid.Column="0" Margin="0,0,2,2" HorizontalAlignment="Right"/>
<ComboBox x:Name="CashActivityTypesCombo" Grid.Row="1" Grid.Column="1" Width="Auto" Height="Auto" MaxHeight="20" MinHeight="20" Background="White"
ItemsSource="{Binding CashActivityTypes, UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="Type"
SelectedValue="{Binding TypeSequence}"
SelectedValuePath="Sequence"
Margin="2,0,0,2" HorizontalAlignment="Stretch"/>
<Label Content="Cash Activity" FontSize="9" Grid.Row="2" Grid.Column="0" Margin="0,2,2,2" HorizontalAlignment="Right"/>
<ComboBox x:Name="CashActivitiesCombo" Grid.Row="2" Grid.Column="1" Width="Auto" Height="Auto" MaxHeight="20" MinHeight="20" Background="White"
ItemsSource="{Binding CashActivities, UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="Activity"
SelectedValue="{Binding ActivitySequence}"
SelectedValuePath="Sequence"
Margin="2,2,0,2" HorizontalAlignment="Stretch"/>
</Grid>
</Grid>
</Grid>
</UserControl>
组合框的子DataView。
我的XAML
ImportPresenter Presenter是namespace Cash_Sheet_WPF.ViewModels
{
/// <summary>
/// Main Presenter Class - Parent class of other presenters
/// </summary>
public class Presenter : ObservableObject
{
#region Variables
protected DataView _CashActivityTypes = Controller.FinanceDB.CashActivityType.DefaultView;
protected DataView _CashActivities = Controller.FinanceDB.CashActivity.DefaultView;
protected short _TypeSequence;
protected short _ActivitySequence;
#endregion
#region Bindings
//Returns a DataView from the CashActivityType table
public DataView CashActivityTypes
{
get
{
return _CashActivityTypes;
}
set
{
_CashActivityTypes = value;
RaisePropertyChangedEvent("CashActivityTypes");
}
}//END CASHACTIVITYTYPES
public DataView CashActivities
{
get
{
return _CashActivities;
}
set
{
_CashActivities = value;
RaisePropertyChangedEvent("CashActivities");
}
}//END CASHACTIVITIES
public short TypeSequence
{
get
{
return _TypeSequence;
}
set
{
_TypeSequence = value;
CashActivities.RowFilter = "Seq_CashActivityType = " + _TypeSequence;
RaisePropertyChangedEvent("TypeSequence");
}
}//END TYPESEQUENCE
#endregion
}
}
班级的孩子
ImportPresenter Presenter类，扩展namespace Cash_Sheet_WPF.ViewModels
{
public class ImportPresenter : Presenter
{
#region Variables
//BAI Adjustment
private DataView _BAI;
private DataRowView _BAIRow;
private DataView _BAICashActivities = Controller.FinanceDB.CashActivity.DefaultView;
private short _SelectedBAIType = 0;
private short _SelectedBAIActivity = 0;
private long _CashActivityTypeIndex = 0;
private long _CashActivityIndex = 0;
private decimal _BucketAmount = 0;
#endregion
#region Bindings
/// <summary>
/// Cash Activities for the BAI Import Adjustment Section
/// </summary>
public DataView BAICashActivities
{
get
{
return _BAICashActivities;
}
set
{
_BAICashActivities = value;
RaisePropertyChangedEvent("BAICashActivities");
}
}
/// <summary>
/// Gets the Selected Type index, to be used by the Combobox
/// </summary>
public long CashActivityTypeIndex
{
get
{
return _CashActivityTypeIndex;
}
set
{
_CashActivityTypeIndex = value;
RaisePropertyChangedEvent("CashActivityTypeIndex");
}
}
/// <summary>
/// Stores the index of the currently selected Cash Activity
/// </summary>
public long CashActivityIndex
{
get
{
return _CashActivityIndex;
}
set
{
_CashActivityIndex = value;
RaisePropertyChangedEvent("CashActivityIndex");
}
}
/// <summary>
/// Selected Cash Activity Type
/// </summary>
public short SelectedBAIType
{
get { return _SelectedBAIType; }
set
{
_SelectedBAIType = value;
RaisePropertyChangedEvent("SelectedBAIType");
BAICashActivities.RowFilter = "Seq_CashActivityType = " + _SelectedBAIType;
RaisePropertyChangedEvent("BAICashActivities");
}
}
/// <summary>
/// The Selected Cash Activity
/// </summary>
public short SelectedBAIActivity
{
get
{
return _SelectedBAIActivity;
}
set
{
_SelectedBAIActivity = value;
RaisePropertyChangedEvent("SelectedBAIActivity");
}
}
/// <summary>
/// Returns the Index of text in a DataView
/// </summary>
/// <param name="dataView">DataView you are searching</param>
/// <param name="stringItem">Search Text</param>
/// <returns></returns>
private long GetSelectedIndex(DataView dataView, string stringItem)
{
long selectedIndex = 0;
foreach(DataRowView dataRowView in dataView)
{
if (dataRowView.Row.ItemArray.Contains(stringItem))
{
break;
}
else
{
selectedIndex++;
}
}
return selectedIndex;
}
#endregion
}
}
类
{{1}}
答案 0 :(得分：0)
所以我想如果有人遇到这个问题，我已经发现了正在发生的事情。
当您基于相同的DataView对象创建两个不同的DataTable对象时，一个上的过滤器将始终影响另一个。
因此，我没有使用同一个DataTable创建新变量，而是使用了DataTable GetData()的{{1}}函数，这很好。
TableAdapter