how to pass a input parameter _HeaderToSearch in Predicate

weixin_33972649

于 2008-07-13 23:10:00 发布

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本文介绍了一种使用自定义对象ListMatcher进行列表过滤的方法。通过创建ListMatcher实例并传递要搜索的标题，可以有效地筛选出符合特定标题前缀的列表项。

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Then, how to pass a input parameter _HeaderToSearch in Predicate?

1. To do that, we need to a new object called ListMatcher -

public class ListMatcher
{
private string _HeaderToSearch;
public ListMatcher(string headerToSearch)
{
_HeaderToSearch = headerToSearch;
}
public bool Predicate(SprintBacklogItem item)
{
return item.Title.StartsWith(_HeaderToSearch, StringComparison.InvariantCultureIgnoreCase);
}
}

2. Next , I initialized the ListMatcher object and use the HeaderToSearch to filter the items-

ListMatcher matcher = new ListMatcher("QA");
this.FindAll(matcher.Predicate);

Done.