C#中提示：可访问性不一致：参数类型XXX比方法XXX的可访问性低

快来打我* 2024-04-17 05:24 44阅读 0赞

## 场景 ##

在Winforn窗体应用中运行时提示：

![20190822094934461.jpg][]

在Button按钮的点击事件中：

private void button1_Click(object sender, EventArgs e)
            {
                this.ShowData(this.personList);
            }

调用了上面声明的全局变量personList。

public partial class Form1 : Form
        {
            public List<Person> personList = new List<Person>();

而新建的类如下：

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    
    namespace TreeGridViewTest2
    {
        class Person
        {
            public int id;
    
            public int Id
            {
                get { return id; }
                set { id = value; }
            }
    
            public string password;
    
            public string Password
            {
                get { return password; }
                set { password = value; }
            }
    
            private int level;
    
            public int Level
            {
                get { return level; }
                set { level = value; }
            }
    
            private bool isExpanded;
    
            public bool IsExpanded
            {
                get { return isExpanded; }
                set { isExpanded = value; }
            }
    
            private List<Person> childList;
    
            public List<Person> ChildList
            {
                get { return childList; }
                set { childList = value; }
            }
        }
    }

## 实现 ##

类或结构的默认访问类型是internal，是不能在类外访问。

所以在类前面添加public即可。

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    
    namespace TreeGridViewTest2
    {
        public class Person
        {
            public int id;
    
            public int Id
            {
                get { return id; }
                set { id = value; }
            }
    
            public string password;
    
            public string Password
            {
                get { return password; }
                set { password = value; }
            }
    
            private int level;
    
            public int Level
            {
                get { return level; }
                set { level = value; }
            }
    
            private bool isExpanded;
    
            public bool IsExpanded
            {
                get { return isExpanded; }
                set { isExpanded = value; }
            }
    
            private List<Person> childList;
    
            public List<Person> ChildList
            {
                get { return childList; }
                set { childList = value; }
            }
        }
    }

[20190822094934461.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/11/865262c8f33c4bf6954e69072fcc0365.jpg