爲什麼我在DataGridView控件中刪除一行時出現此錯誤？

Question

爲什麼我在DataGridView控件中刪除一行時出現此錯誤？ 我該如何解決這個問題？

Rows cannot be programmatically removed unless the DataGridView is data-bound to an IBindingList that supports change notification and allows deletion. 

---

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

     public Form1() 
     { 
      InitializeComponent(); 
     } 

     void Form1Load(object sender, EventArgs e) 
     { 
      person.Add(new Person("McDonalds", "Ronald")); 
      person.Add(new Person("Rogers", "Kenny"));   
      dataGridView1.DataSource = person; 
     } 

     void BtnDeleteClick(object sender, EventArgs e) 
     { 
      dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index); 
     } 
    } 

Answer 1

List<T>沒有實現IBindingList，

public class List<T> : IList<T>, ICollection<T>, 
    IEnumerable<T>, IList, ICollection, IEnumerable 

您需要使用實現IBindingList

使用BindingList<T>或DataTable代替

類

Answer 2

您必須從person列表中刪除一個元素。

person.RemoveAt(0); 

Answer 3

我的解決辦法：

void BtnDeleteClick(object sender, EventArgs e) 
{ 
    person.RemoveAt(dataGridView1.SelectedRows[0].Index); 
}