WPF组合框textsearch与包含 [英] WPF combobox textsearch with contains

问题描述

如何使用包含而不是 StartsWith

<rf:ComboBox Grid.Row="1"
                         Grid.Column="5"
                         Width="200"
                         ItemsSource="{Binding Source={StaticResource AccountProvider}}"
                         DisplayMemberPath="Description"
                         SelectedValuePath="IndRekId"
                         IsEmptyItemVisible="True"
                         SelectedValue="{Binding Id, UpdateSourceTrigger=PropertyChanged}"
                         IsTextSearchEnabled="True"
                         TextSearch.TextPath="Description"
                         IsEditable="True"/>

搜索功能有效，但我需要在子字符串上进行匹配

The search function works but i need to match on substrings

推荐答案

这里有一个MVVM框架示例。

Here I have an example in MVVM framework.

我的xaml文件：

<ComboBox Name="cmbContains" IsEditable="True" IsTextSearchEnabled="false" ItemsSource="{Binding pData}"  DisplayMemberPath="wTitle" Text="{Binding SearchText ,Mode=TwoWay}"  >
  <ComboBox.Triggers>
      <EventTrigger RoutedEvent="TextBoxBase.TextChanged">
          <BeginStoryboard>
              <Storyboard>
                  <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="IsDropDownOpen">
                      <DiscreteBooleanKeyFrame Value="True" KeyTime="0:0:0"/>
                  </BooleanAnimationUsingKeyFrames>
              </Storyboard>
          </BeginStoryboard>
      </EventTrigger>
  </ComboBox.Triggers>
</ComboBox>

我的cs文件：

//ItemsSource - pData
//There is a string attribute - wTitle included in the fooClass (DisplayMemberPath)
private ObservableCollection<fooClass> __pData;
public ObservableCollection<fooClass> pData {
    get { return __pData; }
    set { Set(() => pData, ref __pData, value);
        RaisePropertyChanged("pData");
    }
}

private string _SearchText;
public string SearchText {
    get { return this._SearchText; }
    set {
        this._SearchText = value;
        RaisePropertyChanged("SearchText");

        //Update your ItemsSource here with Linq
        pData = new ObservableCollection<fooClass>{pData.ToList().Where(.....)};
    }
}

您可以看到可编辑的comboBox绑定到字符串（SearchText）
一旦出现TextChanged事件，就会显示下拉列表，并且双向绑定会更新该值。
进入set {}时，css文件中的ItemsSource更改了；

You can see the editable comboBox is binding to the string (SearchText) Once there is a TextChanged event the drop down is shown and the Two way binding update the value. The ItemsSource changed in the cs file while it goes into the set{}; syntax.

https：//gist.github .com / tonywump / 82e66abaf71f715c4bd45a82fce14d80

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