这篇文章主要为大家展示了“LINQ如何查询匹配给定的字符”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“LINQ如何查询匹配给定的字符”这篇文章吧。
LINQ可用于查询和转换LINQ字符串和字符串集合。它对文本文件中的半结构化数据尤其有用。LINQ 查询可与传统的字符串函数和正则表达式结合使用。例如，可以使用 Split 或 Split 方法来创建字符串数组，然后可以使用LINQ 来查询或修改此数组。可以在 LINQ 查询的where 子句中使用IsMatch 方法。可以使用LINQ 来查询或修改由正则表达式返回的MatchCollection 结果。
LINQ查询匹配给定的字符
using System; using System.Linq; using System.Collections.Generic; using System.Collections; /// <summary> ///Class1 学习linq /// </summary> public class Class1 { public Class1() { // //TODO: 在此处添加构造函数逻辑 // } public string LinqToString() { string text = @"Historically, the world of data and the world of objects" + @" have not been well integrated. Programmers work in C# or Visual Basic" + @" and also in SQL or XQuery. On the one side are concepts such as classes," + @" objects, fields, inheritance, and .NET Framework APIs. On the other side" + @" are tables, columns, rows, nodes, and separate languages for dealing with" + @" them. Data types often require translation between the two worlds; there are" + @" different standard functions. Because the object world has no notion of query, a" + @" query can only be represented as a string without compile-time type checking or" + @" IntelliSense support in the IDE. Transferring data from SQL tables or XML trees to" + @" objects in memory is often tedious and error-prone."; string searchTerm = "data"; //将内容拆分成数组 string[] source = text.Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' }, StringSplitOptions.RemoveEmptyEntries); //从数组里查询符合条件的数据 var matchQuery = from s in source where s.IndexOf('a')==0 orderby s ascending select s ; int wordCount = matchQuery.Count(); string str=""; foreach(string a in matchQuery) str+=a+","; //返回查询后的结果 return str+":::"+wordCount; } }以上是“LINQ如何查询匹配给定的字符”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注编程网行业资讯频道！
