过滤绑定到SampleDataSource的列表框 [英] Filter a Listbox bound to SampleDataSource

问题描述

我在发布之前已经进行了广泛的搜索，但我找不到解决方案。

I have searched extensively before posting, but I could not find a solution.

推荐答案

你好dloop2

你的简短问题似乎包含几个没有细节的子问题。在显示代码演示时我必须做出一些假设。

我不确定SampleDataSource的细节，让我们把它作为Blend生成的一个简单的，它默认有一个包含2个属性的集合。我假设你只使用属于字符串类型的property1。我假设您将集合拖到列表框中，Blend将生成数据绑定代码，包括：ItemsSource =" {Binding Collection}"

在SampleData文件夹中，找到SampleDataSource.xaml.cs，打开它，找到部分代码：
  public class SampleDataSource：System.ComponentModel.INotifyPropertyChanged
  ; {
   ...   public ItemCollection Collection   {  ...
  }
 }

如您所见，"收集" property是列表框数据绑定到。

你可以做的是将xaml更改为ItemsSource =" {Binding MatchedCollection}" ，并在该类中添加另一个属性：

Hi dloop2

You brief question seems contain several sub-questions without details. I have to make some assumptions when showing code demo.

I am not sure the detail of the SampleDataSource, lets take it as a simple one that generated by Blend, which default has a collection with 2 properties. I assume you only use the property1 which is string type. I assume you drag the collection to the listbox, which Blend will generate the databinding code, including: ItemsSource="{Binding Collection}"

In the SampleData folder, find the SampleDataSource.xaml.cs , open it, find the partial code of:
 public class SampleDataSource : System.ComponentModel.INotifyPropertyChanged
 {
  ...
  public ItemCollection Collection
  { ...
  }
 }

As you can see, that "Collection" property is the listbox databinding to.

What you can do is change the xaml to ItemsSource="{Binding MatchedCollection}" , and add another property in that class:

private ItemCollection _MatchedCollection = new ItemCollection();
  public ItemCollection MatchedCollection
  {
	get{
		foreach (ItemCollection item in Collection)
		{
			if (Textbox.text.Contain(item.Property1)) _MatchedCollection.add item;
		}
		return _MatchedCollection;
	}
  }

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