如何在lambda表达式的where子句中使用值的数组 [英] how to use the array of values in the where clause of lambda expression

问题描述

我正在使用asp.net mvc3.
我想使用parameterMap将数组从视图传递到控制器，如下所示
我认为:

I am using asp.net mvc3.
I want to pass an array from view to the controller using parameterMap as shown below
In my view:

      parameterMap:
     function (data, options) {
     if (options === "read") {
     sessionStorage.setItem("value","array");
     val = sessionStorage.getItem("value");   // contains array
     return { model: JSON.stringify(val) };//passing array to controller
   }
}

控制器:

controller:

public ActionResult SearchDetails( string model)     
{
 var query = (from ......).where();
}

但是我无法在控制器中检索这些值.您能告诉我如何在不使用循环语句的情况下在控制器中检索这些值数组吗?我想在查询的where子句中使用这些值. >
您能告诉我该怎么做吗?

but i am not able to retrieve those values in the controller.can u tell me how to retrieve these array of values in my controller with out using looping statements.and i want to use these values in where clause in my query.

can u tell me how to do this

推荐答案

您不要在where子句中使用 array -您可以使用单个元素.

表格是

You don''t use the array in the where clause - you use an individual element.

The form is

var query = from element in someArray
            where SomePredicate(element)
            select SomeSelection(element);
...

例如

E.g.

var values = from e in model.Split(',')
            where e.Contains("=")
            select e.Split('=')[1];
...

您可能需要咨询在C#中使用LINQ入门 [

You may need to consult Getting Startet with LINQ in C#[^].

Cheers
Andi

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