在添加通用列表时如何格式化数据

Question

我试图将所有数据从DataTable添加到List<string> dataFromDataTable = new List<string>(); 为此，我编写了ac＃代码。 稍后，我需要将其转换为Json。

这是代码。

List<string> dataFromDataTable = new List<string>();

for (int r = 0; r < employees.Rows.Count; r++)
{
   dataFromDataTable.Add("{".ToString());
   for (int c = 0; c < employees.Columns.Count; c++)
    {
      dataFromDataTable.Add(employees.Rows[r][c].ToString());
    }
   dataFromDataTable.Add("}".ToString());
}

这是我的json代码。

var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(sample);

截至目前，我越来越喜欢json。

["John Doe","Fresno","Billy","Fresno","Tom","Kern","King Smith","Kings"]

而我需要像

["John Doe","Fresno"],["Billy","Fresno"],["Tom","Kern"],["King Smith","Kings"]]

怎么做。谢谢

Answer 1

var data = employees.AsEnumerable().Select(x => x.ItemArray).ToList();
var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(data);

希望这可以帮助

Answer 2

我通常会这样：

  var list = employees.AsEnumerable().Select(row =>
            new 
            {
                FirstName = row.Field<string>("FirstName"), // Column name was not specified please change this
                LastName = row.Field<string>("LastName") // As well as this column
            }).ToList();

var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(list);

请注意，最佳做法是在对象中添加键，因此在我们的示例中添加了FirstName和LastName 。