Linq 填充 class 的值

Question

我有一个class

public class Row : IExtensible
{
    public Row();

    [ProtoMember(1, IsRequired = true, Name = "key", DataFormat = DataFormat.Default)]
    public byte[] key { get; set; }

    [ProtoMember(2, Name = "values", DataFormat = DataFormat.Default)]
    public List<Cell> values { get; }
}

我可以使用以下方法手动填充：

编辑： //列和数据是样本byte[] values

CellSet.Row row = new CellSet.Row { key = sampleKey };
Cell value = new Cell { column = column1, data = data1 };
row.values.Add(value);

我需要在 LINQ 中填充这些值，这是我一直在尝试的：

var result =
(
    from a in firstrow
    let valuesset = a.Split(',')
    from l in valuesset
    select new CellSet.Row
    {
        key = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString()),
        //values = new List<Cell>() //Not possible since only get is there
    }
).ToList();

如何给对象添加值CellSet.Row？

这个我也试过

//Edit:
//Read the xml file row by row and process it

var result =
(
    from a in firstrow
    let valuesset = a.Split(',')
    from l in valuesset
    select new CellSet.Row
    {
        key = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString()),
        //values = new List<Cell>() //Not possible since only get is there
    }.values.Add(value12)
).ToList();

在值中出现错误，例如：

An expression of type 'string[]' is not allowed in a subsequent from clause with IEnumerable<>

Answer 1

你会这样做：

Func<byte[], IEnumerable<Cell>, Row> create =
    (k, cs) =>
    {
        CellSet.Row row = new CellSet.Row { key = k };
        row.values.AddRange(cs);
        return row;
    };

var result =
(
    from a in firstrow
    let valuesset = a.Split(',')
    from l in valuesset
    select create(
        Encoding.UTF8.GetBytes(Guid.NewGuid().ToString()),
        new [] { value12 })
).ToList();

现在，由于您的代码不清楚它究竟应该如何工作，因此答案也不完全存在。但这应该给你基本的想法。

Linq 填充 class 的值

Linq to populate values of a class

.net

c#

linq

.net-4.0