bindingnavigator1(C#DataGridView使用BindingNavigator實現簡單分頁功能)

要使用BindingNavigator實現簡單的分頁功能,可以按照以下步驟進行操作:

在窗體上添加一個DataGridView控件和一個BindingNavigator控件。

在窗體的Load事件中,使用數據源填充DataGridView控件,并將BindingNavigator控件的BindingSource屬性設置為DataGridView控件的數據源。

設置DataGridView控件的屬性,包括AllowUserToAddRows、AllowUserToDeleteRows和SelectionMode等。

設置BindingNavigator控件的屬性,包括AddNewItem、DeleteItem和CountItem等。

在BindingNavigator控件的Events中,添加點擊“上一頁”和“下一頁”按鈕的事件處理程序。

在事件處理程序中,修改BindingSource控件的position屬性,實現數據的翻頁。

以下是一個簡單的示例代碼:

public partial class Form1 : Form{private BindingSource bindingSource = new BindingSource();private int pageSize = 10; // 每頁顯示的記錄數private int currentPage = 1; // 當前頁碼public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){// 使用數據源填充DataGridView控件// 可以使用自己的數據源替換下面的示例數據List<Person> persons = GetPersons();bindingSource.DataSource = persons;dataGridView1.DataSource = bindingSource;// 設置DataGridView控件的屬性dataGridView1.AllowUserToAddRows = false;dataGridView1.AllowUserToDeleteRows = false;dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;// 設置BindingNavigator控件的屬性bindingnavigator1.BindingSource = bindingSource;bindingNavigator1.AddNewItem.Enabled = false;bindingNavigator1.DeleteItem.Enabled = false;// 設置分頁信息int pageCount = (int)Math.Ceiling(persons.Count / (double)pageSize);bindingNavigator1.CountItem.Text = "共 " + pageCount + " 頁";bindingNavigator1.MoveFirstItem.Click += new EventHandler(MoveFirstItem_Click);bindingNavigator1.MovePreviousItem.Click += new EventHandler(MovePreviousItem_Click);bindingNavigator1.MoveNextItem.Click += new EventHandler(MoveNextItem_Click);bindingNavigator1.MoveLastItem.Click += new EventHandler(MoveLastItem_Click);}private void MoveFirstItem_Click(object sender, EventArgs e){currentPage = 1;bindingSource.Position = 0;}private void MovePreviousItem_Click(object sender, EventArgs e){if (currentPage > 1){currentPage--;bindingSource.Position -= pageSize;}}private void MoveNextItem_Click(object sender, EventArgs e){int pageCount = (int)Math.Ceiling(bindingSource.Count / (double)pageSize);if (currentPage < pageCount){currentPage++;bindingSource.Position += pageSize;}}private void MoveLastItem_Click(object sender, EventArgs e){int pageCount = (int)Math.Ceiling(bindingSource.Count / (double)pageSize);currentPage = pageCount;bindingSource.Position = (currentPage - 1) * pageSize;}private List<Person> GetPersons(){// 示例數據List<Person> persons = new List<Person>();for (int i = 1; i <= 100; i++){persons.Add(new Person { Id = i, Name = "Person " + i });}return persons;}}public class Person{public int Id { get; set; }public string Name { get; set; }}

在這個示例中,我們使用一個包含100個Person對象的List作為數據源,每頁顯示10條記錄?？梢愿鶕约旱男枨笮薷膒ageSize和數據源。