检查C#列表中的某些项目是否相同 [英] Check if some items are same in a c# list

问题描述

我想根据列表中存在的项目检查列表中的某些项目是否相同.

I want to check if some items are same in a list based on a item present in the list.

List<ProductDetailDTO> productDTOs;

ProductDetailDTO是-

The ProductDetailDTO is -

public class ProductDetailDTO
{
    public int ProductId { get; set; }
    public string Name { get; set; }
    public string Category { get; set; }
    public byte[] Image { get; set; }
    public string Description { get; set; }
    public string Brand { get; set; }
    public string GUID { get; set; }
    public string VariantName { get; set; }
    public string VariantValue { get; set; }
    public decimal Price { get; set; }
}

现在，我想将所有具有相同GUID的VariantName和VariantValue一起显示.

Now, I want to display all VariantName and VariantValue with the same GUIDs together.

我该如何实现?

推荐答案

尝试与此

productDTOs.GroupBy(x => x.GUID,(key,item) => new
            {
                VariantName= item.Select(y=>y.VariantName),
                VariantValue = item.Select(y => y.VariantValue),

            }).ToList()

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