使用LINQ语句 [英] Using LINQ Statements

问题描述

嗨

db.table.where(c=>c.field1==value)

我有几个过滤表的条件，并通过复选框定义每个条件
例如checkbox1必须启用field1 = value，checkbox2必须启用
field2 = value等.

我如何将它们作为参数发送到where()?

我可以通过if和case和
解决3个条件和3个复选框的问题 考虑多个状态，但条件和复选框超过3个
需要更多行和where语句.

I have a several criteria for filtering table and define each by checkbox
for example checkbox1 must enable field1=value, checkbox2 must enable
field2=value and so on.

How i send them as parameters to where()?

i can solve this for 3 criteria and 3 checkbox by if and case and
considering multiple status but when criteria and checkboxes is more than 3
need to more lines and where statements.

How can do this by one where statement via parameters?

推荐答案

如果逻辑在您的where条件中有所不同，则一种可能是您创建了一种新方法来选择正确的行.在该方法中，如果符合条件，则返回该行.例如，请参阅:编写自定义LINQ扩展方法 [

If the logic varies in your where condition, one possibility could be that you create a new method for selecting the correct rows. In that method you return the row if it matches your conditions. For example, see: Writing Custom LINQ Extension Methods[^]

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