C# linq like

在C#中，可以使用LINQ的`Contains`方法来实现模糊查询。下面是一个示例：

string keyword = "keyword";
List<string> list = new List<string> { "abc", "def", "keyword123", "xyz" };

var result = list.Where(s => s.Contains(keyword)).ToList();
foreach (var item in result)
{
    Console.WriteLine(item);
}

这段代码将会输出包含关键字"keyword"的字符串，即"keyword123"。

另外，如果你想要实现类似"%k%e%y%w%o%r%d%"这样的模糊查询，可以使用`Regex`类来进行正则表达式匹配。下面是一个示例：

string pattern = "k.*e.*y.*w.*o.*r.*d.*";
List<string> list = new List<string> { "abc", "def", "keyword123", "xyz" };

var result = list.Where(s => Regex.IsMatch(s, pattern)).ToList();
foreach (var item in result)
{
    Console.WriteLine(item);
}

这段代码将会输出符合正则表达式模式的字符串，即"keyword123"。

相关问题

LINQ to sql

LINQ to SQL is a technology that enables developers to use LINQ (Language Integrated Query) to access data stored in Microsoft SQL Server databases. With LINQ to SQL, developers can write queries using C# or VB.NET instead of SQL, which provides a more intuitive and type-safe way to work with data.

LINQ to SQL provides a mapping between the database schema and the classes in the application, allowing developers to work with data as objects rather than as rows in a table. This makes it easier to write and maintain code, as well as improving performance by reducing the number of database calls needed to retrieve or update data.

LINQ to SQL also supports features like change tracking, which allows developers to detect and handle changes to data made by other users or applications. It also provides support for transactions, allowing developers to ensure that multiple database operations are atomic and consistent.

Overall, LINQ to SQL is a powerful tool for developers working with Microsoft SQL Server databases, offering a more productive and efficient way to access and manipulate data.