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[ASP.net教程]LINQ使用Lambda表达式选择几列


学习LINQ的Lambda的表达式,尝试从数据集合中,选择其中几列。

创建一个model:

 

source code:

namespace Insus.NET.Models{  public class ProdImage  {    public int ProductID { get; set; }    public int Type { get; set; }    public int Priority { get; set; }    public string Url { get; set; }    public string Alt { get; set; }    public string Creator { get; set; }    public DateTime CreateOn { get; set; }  }}

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我们再创建一个实体:



source code:

namespace Insus.NET.Entities{ public class ProdImageEntity  {    public IEnumerable<ProdImage> GetProdImage = new List<ProdImage>    {      new ProdImage { ProductID = 1,Type=12, Priority=45,        Url = "http://insus.cnblogs.com", Alt="Insus blogs",        Creator ="Insus.NET", CreateOn=Convert.ToDateTime("2016-04-13")},      new ProdImage { ProductID = 2,Type=18, Priority=38,        Url = "http://www.cnblogs.com/insus", Alt="Insus blogs",        Creator ="Insus.NET", CreateOn=Convert.ToDateTime("2016-04-18")}    };  }}

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接下来,我们就可以演示:

   ProdImageEntity pie = new ProdImageEntity();



你可以选择全部:


在标题中,我们需要选择其中几个字段: