如何使用CSVHelper将csv文件读入列表 >

Question

我在文本/ csv文件中有此数据：

ID,Boo,Soo
0,True,qwerty
0,True,qwerty

0,True,qwerty
0,True,qwerty

0,True,qwerty
0,True,qwerty
0,True,qwerty

0,True,qwerty
0,True,qwerty
0,True,qwerty
0,True,qwerty

0,True,qwerty
0,True,qwerty
0,True,qwerty
0,True,qwerty

尤其要注意空白行。我想使用NuGet中的CSVHelper将此数据读取到多个列表中，其中边界由空白行确定。

因此，如果有一个具有属性MyClass，ID和Boo的类Soo，并且我直接在代码中初始化上述示例数据，我想要这样的List<List<Mycass>> ：

var data = {
    new List<MyClass> {
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} }
    },
    new List<MyClass> {
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} }
    },
    new List<MyClass> {
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} }
    },
    new List<MyClass> {
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} }
    },
    new List<MyClass> {
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} },
        { new MyClass {ID = 0, Boo = true, Soo = "qwerty"} }
    },
}

但是，当然，我不预先知道数据的真实外观。空列表之间的每个列表中可以有任意数量的项目。

这里是我到目前为止的代码：

for (int j = 0; j < rnd.Next(4, 10); j++)
{
    for (int i = 0; i < rnd.Next(1, 7); i++)
    {
        ListMyClass.Add(new MyClass { ID = 0, Boo = true, Soo = "qwerty" });
    }

    ListListMyClass.Add(new List<MyClass>(ListMyClass));
    ListMyClass.Clear();
}

using (var csvWiter = new CsvWriter(new StreamWriter("csvHelper.csv"), CultureInfo.InvariantCulture))
{
    foreach (var listRecord in ListListMyClass)
    {
        csvWiter.WriteRecords(listRecord);
        csvWiter.NextRecord();
    }
}

我该怎么做？

Answer 1

问题有点令人困惑，但这是您读取数据的方式：

using (var reader = new StreamReader("csvHelper.csv"))
using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
{
    var list = csv.GetRecords<MyClass>();
}