Linq正则表达式用于全词搜索 | Linq正则表达式用于全词搜索

本文介绍了Linq正则表达式用于全词搜索的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我找不到关于这个的最新答案.

I'm unable to find a recent decent answer on this.

Linq不支持正则表达式，并且尝试提取方法并不比框架更加聪明.如何在linq中的句子列表上完成整个工作.

Linq does not support regex, and trying to extract a method out does not outsmart the framwork. How do I do a whole work match on a list of sentences in linq.

我需要\ b的原因是因为它可能是字符串的开头或结尾，或者有逗号，破折号或其他类似的分隔符.

The reason I need the \b is because it could be start or end of string, or have a comma, dash, or other similar separators.

    private bool isMatch(string searchText, string text)
    {
        return Regex.IsMatch(searchText, "\\b"+text+"\\b", RegexOptions.IgnoreCase | RegexOptions.Compiled);
    }


        result  p = itemsRep
            .Where(fullText=> isMatch(searchText, fullText))
            .FirstOrDefault();

推荐答案

我认为您是说Linq-to-SQL/Linq-To-Entities不支持表达式中的Regex.

I think what you're saying is that Linq-to-SQL/Linq-To-Entities does not support Regex in expressions.

尝试在.Where()之前添加.AsEnumerable().

然后，.Where()方法将枚举任何已翻译查询的结果，而不是尝试将您的.Where()表达式转换为SQL.

The .Where() method will then enumerate over the results of any translated query, rather than try to convert your .Where() expression to SQL.

赞:

result  p = itemsRep
            .AsEnumerable()
            .Where(fullText => isMatch(searchText, fullText))
            .FirstOrDefault();

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