[英]Using Linq to return a Comma separated string
I have a class in my application 我的申请中有课程
public class ProductInfo
{
public int ProductId {get;set;}
public int ProductType{get;set;}
}
I want to write a linq query which can return me a list of ProductIds in a comma separated format where ProductType is equal to certain number ? 我想编写一个linq查询,该查询可以用逗号分隔的格式返回ProductId的列表,其中ProductType等于某个数字?
I tried using string.join with my Linq statement but it didn't seem to work. 我在Linq语句中尝试使用string.join,但似乎没有用。
var s = string.Join(",", products.Where(p => p.ProductType == someType)
.Select(p => p.ProductId.ToString()));
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