电商直播系统源码，利用DatagridView BindingNavigato实现分页
电商直播系统源码，利用DatagridView BindingNavigato实现分页的相关代码
List<person> personlist =new List<person>();
int pageSize = 20;
int pageCount = 0;
private void Form1_Load(object sender, EventArgs e)
{
for (int i = 0; i < 112; i++)
{
person p = new person();
p.name = "test" + i.ToString();
p.age = i;
personlist.Add(p);
}
LoadData(1, dgvDemo);
bindingNavigatorPositionItem.Enabled = true;
// Set the status of the BindingNavigator control
if (pageCount == 0 || pageCount == 1)
{
bindngrDemo.MoveFirstItem.Enabled = false;
bindngrDemo.MoveLastItem.Enabled = false;
bindngrDemo.MoveNextItem.Enabled = false;
bindngrDemo.MovePreviousItem.Enabled = false;
}
else
{
bindngrDemo.MoveFirstItem.Enabled = false;
bindngrDemo.MoveLastItem.Enabled = true;
bindngrDemo.MoveNextItem.Enabled = true;
bindngrDemo.MovePreviousItem.Enabled = false;
bindngrDemo.PositionItem.Text = "1";
bindngrDemo.CountItem.Text = "of {" + pageCount.ToString() + "}";
}
}
private void LoadData(int pageIndex, DataGridView dgvDemo)
{
int Count = personlist.Count();
if (Count % pageSize == 0)
pageCount = Count / pageSize;
else
pageCount = Count / pageSize + 1;
List<person> plist = personlist.Skip((pageIndex-1) * pageSize).Take(pageSize).ToList();
BindingSource bindseDemo = new BindingSource();
bindseDemo.DataSource = plist;
dgvDemo.DataSource = bindseDemo;
}
private void bindingNavigatorMoveFirstItem_Click(object sender, EventArgs e)
{
LoadData(1, dgvDemo);
bindngrDemo.PositionItem.Text = "1";
bindngrDemo.MoveFirstItem.Enabled = false;
bindngrDemo.MovePreviousItem.Enabled = false;
bindngrDemo.MoveNextItem.Enabled = true;
bindngrDemo.MoveLastItem.Enabled = true;
}
private void bindingNavigatorMovePreviousItem_Click(object sender, EventArgs e)
{
int currentPage = Convert.ToInt32(bindngrDemo.PositionItem.Text);
if (currentPage >= 2)
{
int page = currentPage - 1;
bindngrDemo.PositionItem.Text = page.ToString();
LoadData(page, dgvDemo);
if (page == 1)
{
bindngrDemo.MovePreviousItem.Enabled = false;
bindngrDemo.MoveFirstItem.Enabled = false;
}
if (page <= pageCount)
{
bindngrDemo.MoveNextItem.Enabled = true;
bindngrDemo.MoveLastItem.Enabled = true;
}
}
else
{
MessageBox.Show("This is the first page", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void bindingNavigatorMoveNextItem_Click(object sender, EventArgs e)
{
int currentPage = Convert.ToInt32(bindngrDemo.PositionItem.Text);
if (currentPage < pageCount)
{
int page = currentPage + 1;
bindngrDemo.PositionItem.Text = page.ToString();
LoadData(page, dgvDemo);
if (page == pageCount)
{
bindngrDemo.MoveNextItem.Enabled = false;
bindngrDemo.MoveLastItem.Enabled = false;
}
if (page >= 2)
{
bindngrDemo.MovePreviousItem.Enabled = true;
bindngrDemo.MoveFirstItem.Enabled = true;
}
}
else
{
MessageBox.Show("This is the last page", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void bindingNavigatorMoveLastItem_Click(object sender, EventArgs e)
{
LoadData(pageCount, dgvDemo);
bindngrDemo.PositionItem.Text = pageCount.ToString();
bindngrDemo.MoveLastItem.Enabled = false;
bindngrDemo.MoveNextItem.Enabled = false;
bindngrDemo.MovePreviousItem.Enabled = true;
bindngrDemo.MoveFirstItem.Enabled = true;
}
private void bindingNavigatorPositionItem_KeyPress(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar >= 48 && e.KeyChar <= 57) || e.KeyChar == 8 || e.KeyChar == 13 || e.KeyChar == 127)
{
e.Handled = false;
if (e.KeyChar == 13)
{
int page=Convert.ToInt16(bindingNavigatorPositionItem.Text);
LoadData(page, dgvDemo);
}
}
else
{
e.Handled = true;
}
}
}
public class person
{
public string name { get; set; }
public int age { get; set; }
}
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