c# - 无法使用泛型列表填充数据 GridView

Question

我不明白下面的简单代码有什么问题。它所做的只是获取一个列表并将其显示在数据 GridView 中。这是我得到的错误:

Error 1 Inconsistent accessibility: return type 'System.Collections.Generic.List' is less accessible than method 'WindowsFormsApplication10.Form1.FillGridView()'

此外，有没有办法将您的列表、数组列表等转换为数据集类型？

public partial class Form1 : Form
    {
    public Form1 ()
    {
        InitializeComponent ();
    }

    public List<Student> FillGridView ()
    {
        List<Student> l = new List<Student> ();
        l.Add (new Student { Fname="bloke", Lname="lll", Contact=293489485});
        l.Add (new Student { Fname = "dog", Lname = "assdf", Contact = 35345 });
        l.Add (new Student { Fname = "mary", Lname = "sdff", Contact = 6456 });
        l.Add (new Student { Fname = "john", Lname = "sdfsdf", Contact = 45656 });
        return l;


    }


    private void Form1_Load ( object sender, EventArgs e )
    {
        dataGridView1.DataSource = this.FillGridView ();
    }

    private void button1_Click ( object sender, EventArgs e )
    {

    }
}

Answer 1

你的方法需要公开吗？看起来您的学生类(class)不是公开的，因此将其列表返回给任何公开调用者是不一致的。看起来，您的方法可以是私有(private)的。

private List<Student> FillGridView()