如何用linq进行LIKE查询？

Question

如何在Linq中执行LIKE查询？

我有以下查询我想执行.

var results = from c in db.costumers
              where c.FullName LIKE "%"+FirstName+"%,"+LastName
              select c;

Answer 1

你可以使用SqlMethods.Like(matchExpression,pattern)

var results = from c in db.costumers
              where SqlMethods.Like(c.FullName, "%"+FirstName+"%,"+LastName)
              select c;

在LINQ to SQL之外使用此方法将始终抛出NotSupportedException异常.

Answer 2

尝试将string.Contains()与EndsWith结合使用.

var results = from c in db.Customers
              where c.FullName.Contains (FirstName) && c.FullName.EndsWith (LastName)
              select c;

Answer 3

试试这样吧

var results = db.costumers.Where(X=>X.FullName.Contains(FirstName)&&(X=>X.FullName.EndsWith(LastName))
                          .Select(X=>X);

Answer 4

 where c.FullName.Contains("string")

Answer 5

2019在这里：

需要 EF6

using System.Data.Entity;
string searchStr ="bla bla bla";
var result = _dbContext.SomeTable.Where(x=> DbFunctions.Like(x.NameAr, string.Format("%{0}%", searchStr ))).FirstOrDefault();