Question

我的模型就像是

public class MovieListModel
{        
    public int Id { get; set; }
    public List<string> FilePathList { get; set; }
    public string FileName { get; set; }
    public string Extension { get; set; }
    public string Size { get; set; }
    public DateTime CreatedTime { get; set; }
    public DateTime ModifiedTime { get; set; }
}

我需要为上述模型添加赋值，但问题是将值添加到模型内的字符串列表List FilePathList中。我需要这样的东西，

var obj = new MovieListModel()
 {
    FileName = fi.Name,
    FilePathList = , //  Need to add value here.
    Count = 1,
    Extension = fi.Extension,
    Size = Helper.FormatBytes(fi.Length),
    CreatedTime = fi.CreationTime,
    ModifiedTime = File.GetLastWriteTime(item)
};
movieList.Add(obj);

Answer 1

这是一种方式：

var obj = new MovieListModel()
{
    FileName = fi.Name,
    FilePathList = new List<string>() { "Value" }, //  Need to add value here.
    Count = 1,
    Extension = fi.Extension,
    Size = Helper.FormatBytes(fi.Length),
    CreatedTime = fi.CreationTime,
    ModifiedTime = File.GetLastWriteTime(item)
};
movieList.Add(obj);

根据您准确添加的内容，可能有更好的方式。

Answer 2

var obj = new MovieListModel()
            {
                FileName = fi.Name,
                FilePathList = new List<string> {
                    // Add value here
                },
                Count = 1,
                Extension = fi.Extension,
                Size = Helper.FormatBytes(fi.Length),
                CreatedTime = fi.CreationTime,
                ModifiedTime = File.GetLastWriteTime(item)
            };

Answer 3

这是你需要的吗

var obj = new MovieListModel()
                {
                    FileName = fi.Name,
                    FilePathList = new List<string>(){ obj, whatever...},
                    Count = 1,
                    Extension = fi.Extension,
                    Size = Helper.FormatBytes(fi.Length),
                    CreatedTime = fi.CreationTime,
                    ModifiedTime = File.GetLastWriteTime(item)
                };

Answer 4

试试这样。通过创建一个函数，您将能够向其传递任意数量的参数，并获得所需的输出 -

var obj = new MovieListModel()
            {
                FileName = fi.Name,
                FilePathList = MapMyStrings(fi.prop1, fi.prop2),
                Count = 1,
                Extension = fi.Extension,
                Size = Helper.FormatBytes(fi.Length),
                CreatedTime = fi.CreationTime,
                ModifiedTime = File.GetLastWriteTime(item)
            };

List<string> MapMyStrings(params string[] objs){
     if(!objs.Length > 0) return null;
     return objs.ToList();
}

Answer 5

我知道上面的答案会回答你的问题，但我只是想告诉你这个，以防你想要放在那个列表中的是不是文字字符串（所以如果你需要转换）

var obj = new MovieListModel()
{
    FileName = fi.Name,
    FilePathList = new List<string> { "Test", "Test1", fi.CreatedTime.ToString() /* use of .ToString() to convert other objects to string*/} /* and so on and so on */, 
    Count = 1,
    Extension = fi.Extension,
    Size = Helper.FormatBytes(fi.Length),
    CreatedTime = fi.CreationTime,
    ModifiedTime = File.GetLastWriteTime(item)
};

movieList.Add(obj);

希望这有帮助！

如何为模型内的List <string>赋值

5 个答案: