如何在C#中在单个数组中组合多个自定义对象？

我设计了一个自定义对象列表， 并在此处添加更多详细信息：

public static List<CustomList> MyLists = new List<CustomList>();
public class CustomList
{
    public string Name { get; set; } //
    public string Path{ get; set; } //
    public long Size { get; set; }
    public int Value { get; set; }
}
private void Form1_Load()
{
    CustomList[] list = new CustomList[5];
    list[0] = new CustomList
    {
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    };
    list[1] = new CustomList
    {
        Name = "a2",
        Path = "c:/",
        Size = 222,
        Value = 66
    };

    //add to MyLists
    for (int i = 0; i < list.Count(); i++)
    {
        MyLists.Add(list[i]);
    }
}

private void button1_Click(object sender, EventArgs e)
{
    //show all MyLists
    foreach (CustomList element in MyLists)
    {
        if (element != null)
        Console.WriteLine(element.Size.ToString());
    }
}

试试这个

var list = new List<CustomList>() { 
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    new CustomList{
        Name = "a2",
        Path = "c:/",
        Size = 222,
        Value = 66
    } 
    }

    var array = list.ToArray();

var list=new list（）{
新客户名单{
Name=“a1”，
Path=“c:/”，
尺寸=1111，
值=23
},
新客户名单{
Name=“a2”，
Path=“c:/”，
尺寸=222，
值=66
} 
}
var array=list.ToArray（）；

您已经用

（）

而不是

{}

初始化了数组。 正确的数组初始化语法如下：

CustomList[] list = new CustomList[]
{
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    new CustomList{
        Name = "a2",
        Path = "c:/",
        Size = 222,
        Value = 66
    }
};

或者你可以：

CustomList[] list = new []
{
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    new CustomList{
        Name = "a2",
        Path = "c:/",
        Size = 222,
        Value = 66
    }
};

甚至：

var list = new []
{
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    .  .  .
};

---

你的实际目标是什么？我的意思是，这个代码应该解决什么问题？这不是一个错误的代码，它会工作得很好，你有什么问题当我运行上一个代码时，它显示“CS1586 C#Array creation must have Array size或Array initializer”@kkasp我现在明白了问题所在，用

{}

代替

（）

初始化数组时。我想按任意大小分配动态多个列表，但不要先分配数组大小。很好，很容易出错

CustomList[] list = new []
{
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    new CustomList{
        Name = "a2",
        Path = "c:/",
        Size = 222,
        Value = 66
    }
};

var list = new []
{
    new CustomList{
        Name = "a1",
        Path = "c:/",
        Size = 1111,
        Value = 23
    },
    .  .  .
};