如何过滤Observable集合类集合 [英] How to filter Observable Collection Class Collection

问题描述

我已经实现了Linq-To-Sql ..
在其中添加必要的表...
之后，linq类将自动为字段设置属性..
我实现了一个类 ObservableCollection class ..并在其构造函数中传递datacontextclass对象...

这样得到所有数据后如何过滤（b








$ b $ public

$ b {
foreach（Resource_Allocation_View res dataDC.Resource_Allocation_Views）
{
this.Add（res）;




$ b pre
私人BindBookIssueDetails bResource;
bResource = new BindBookIssueDetails（db）;
_cmbResource.ItemSource = bResource;

请帮助我。

解决方案您可以使用 CollectionViewSource 并对其进行过滤。所以它只影响View（.XAML）方面。

pre code $ ICollectionView collectionView = CollectionViewSource.GetDefaultView（bResource）;
collectionView.Filter = new Predicate< object>（YourFilterFunction）;

查看此博客以了解更多详情。 http://bea.stollnitz.com/blog/?p=31

I have implemented Linq-To-Sql.. Add necessary table in it... after that linq class will automatically set property for field.. I implemented one class using ObservableCollection class.. and pass datacontextclass object in its constructor...

so after getting all data how to filter it?

  public class BindBookIssueDetails : ObservableCollection
        {
            public BindBookIssueDetails(DataClasses1DataContext dataDC)
            {
                foreach (Resource_Allocation_View res in dataDC.Resource_Allocation_Views)
                {
                    this.Add(res);
                }
            }
        }

private BindBookIssueDetails bResource;
bResource = new BindBookIssueDetails(db);
_cmbResource.ItemSource=bResource;

Please Help me.

解决方案

You can use CollectionViewSource and filter it. So that it affect only at the View(.XAML) side

    ICollectionView collectionView = CollectionViewSource.GetDefaultView(bResource);
    collectionView.Filter = new Predicate<object>(YourFilterFunction);

Check out this blog for more details. http://bea.stollnitz.com/blog/?p=31

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