Currently I am searching through my list to find Customers that match on Address. I need to match on both address and city. How do I rewrite my lambda Expression to match both criteria?
客户列表. FindAll(功能(c) c. address = 地址匹配)
Currently I am searching through my list to find Customers that match on Address. I need to match on both address and city. How do I rewrite my lambda Expression to match both criteria?
客户列表. FindAll(功能(c) c. address = 地址匹配)
您要查找的关键字是 AndAlso
。 它将两个独立的检查合并为一个检查, 如果两个组成部分都是 True
, 并且都是 < code> true 。
CustomerList.FindAll(Function(c) c.Address = addressToMatch AndAlso c.City = cityToMatch)
有一个小菜小菜包, 允许您在多个属性的字符串中查找字符串
这将允许以下代码...
CustomerList.Search(addressToMatch,
Function(c) c.Address,
Function(c) c.City)
当连接到 sql 数据库时, 生成的 sql 将类似于 :
SELECT [Extent1].[Address] AS [Address],
[Extent1].[City] AS [City]
FROM [dbo].[Table] AS [Extent1]
WHERE ([Extent1].[Address] LIKE N %searchTerm% )
OR ([Extent1].[City] LIKE N %searchTerm% )
希望这有帮助
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