C#开发WinForm分页控件

C#开发WinForm分页控件

2011-08-12 16:17:55| 分类： C# | 标签：winform c# 分页 控件 winformpager |字号 订阅

闲暇之余，自己动手做了个分页控件，真是受益良多

WinFormPager.dll控件下载地址 WinFormPager源代码下载地址

以下是调用分页控件WinFormPager方法：

//第一步：指定返回的记录数

winFormPager1.RecordCount = 返回记录数;

//第二步：在控件的PageChanged事件中执行绑定DataGridView的方法

private void winFormPager1_PageChanged()
{
dataGridView1.DataSource = GetList(winFormPager1.PageSize,winFormPager1.CurrentPage);//GetList为获取数据库记录方法,不介绍
}

//注：完成以上步骤就可成功调用，其余PageSize属性等可在属性浏览器中设置

以下是分页控件WinformPager完整代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using DevComponents.DotNetBar;

namespace WinFormPager
{
public partial class WinFormPager : UserControl
{
int currentPage = 1;//当前页
/// <summary>
/// 当前页
/// </summary>
[Description("当前页"), Category("分页设置")]
public int CurrentPage
{
get { return currentPage; }
set { currentPage = value; }
}
int pageSize = 10;//每页显示条数
/// <summary>
/// 每页显示条数
/// </summary>
[Description("每页显示条数"), Category("分页设置")]
public int PageSize
{
get { return pageSize; }
set { pageSize = value; }
}
int pageTotal = 0;//总共多少页
/// <summary>
/// 总共多少页
/// </summary>
[Description("总共多少页"), Category("分页设置")]
public int PageTotal
{
get { return pageTotal; }
set { pageTotal = value; }
}
int currentGroup = 1;//当前组
/// <summary>
/// 当前组
/// </summary>
[Description("当前组"), Category("分页设置")]
public int CurrentGroup
{
get { return currentGroup; }
set { currentGroup = value; }
}
int groupSize = 10;//每组显示页数
/// <summary>
/// 每组显示页数
/// </summary>
[Description("每组显示页数"), Category("分页设置")]
public int GroupSize
{
get { return groupSize; }
set { groupSize = value; }
}
int groupTotal = 0;//总共多少组
/// <summary>
/// 总共多少组
/// </summary>
[Description("总共多少组"), Category("分页设置")]
public int GroupTotal
{
get { return groupTotal; }
set { groupTotal = value; }
}
/// <summary>
/// 总的记录数
/// </summary>
private int recordCount;//总的记录数
[Description("总的记录数"), Category("分页设置")]
public int RecordCount
{
get { return recordCount; }
set
{
recordCount = value;
InitData();// 初始化数据
PageChanged();//当前页改变事件
}
}
private int buttonWidth = 20;//按钮宽度
/// <summary>
/// 按钮宽度
/// </summary>
[Description("按钮宽度"), Category("分页设置")]
public int ButtonWidth
{
get { return buttonWidth; }
set { buttonWidth = value; }
}
private int buttonHeight = 23;//按钮高度
/// <summary>
/// 按钮高度
/// </summary>
[Description("按钮高度"), Category("分页设置")]
public int ButtonHeight
{
get { return buttonHeight; }
set { buttonHeight = value; }
}
private int buttonDistance = 0;//按钮间距离
/// <summary>
/// 按钮间距离
/// </summary>
[Description("按钮间距离"), Category("分页设置")]
public int ButtonDistance
{
get { return buttonDistance; }
set { buttonDistance = value; }
}
List<Control> listControl = new List<Control>();//分页的按钮集合

public delegate void PageChangeDelegate();
/// <summary>
/// 当前页改变时发生的事件
/// </summary>
[Description("当前页改变时发生的事件"), Category("分页设置")]
public event PageChangeDelegate PageChanged;
public WinFormPager()
{
InitializeComponent();
PageChanged = SetBtnPrePageAndBtnNextPage;
PageChanged();
}
/// <summary>
/// 初始化数据
/// </summary>
private void InitData()
{
PageTotal = RecordCount / PageSize;//总共多少页
if (RecordCount % PageSize != 0)
{
PageTotal++;
}
GroupTotal = PageTotal / GroupSize;//总共多少组
if (PageTotal % GroupSize != 0)
{
GroupTotal++;
}
for (int i = 0; i < PageTotal; i++)
{
cmbPage.Items.Add((i + 1).ToString());//添加下拉框值
}
BuildPageControl();//创建分页数字按钮
}
/// <summary>
/// 创建分页数字按钮
/// </summary>
private void BuildPageControl()
{
int x = 0;//按钮横坐标
int y = 0;//按钮纵坐标
int num = 0;//按钮数
for (int i = GroupSize * (CurrentGroup - 1); i < GroupSize * CurrentGroup; i++)
{
if (i + 1 > PageTotal)
{
break;
}
num++;
}
int xBtnPreGroup = x + (ButtonWidth + ButtonDistance) * num;//btnPerGroup横坐标
//指定上一组 下一组 上一页 下一页 坐标
btnPreGroup.Location = new Point(xBtnPreGroup, y);
btnNextGroup.Location = new Point(btnPreGroup.Location.X + btnPreGroup.Width + ButtonDistance, y);
btnPrePage.Location = new Point(btnNextGroup.Location.X + btnNextGroup.Width + ButtonDistance, y);
btnNextPage.Location = new Point(btnPrePage.Location.X + btnPrePage.Width + ButtonDistance, y);
cmbPage.Location = new Point(btnNextPage.Location.X + btnNextPage.Width + ButtonDistance, y+(ButtonHeight-cmbPage.Height)/2);
btnGo.Location = new Point(cmbPage.Location.X + cmbPage.Width + ButtonDistance, y);
//设置整个控件的宽度、高度
this.Width = btnGo.Location.X + btnGo.Width;
this.Height = ButtonHeight;
btnPreGroup.Height = ButtonHeight;
btnNextGroup.Height = ButtonHeight;
btnPrePage.Height = ButtonHeight;
btnNextPage.Height = ButtonHeight;
cmbPage.Height = ButtonHeight;
btnGo.Height = ButtonHeight;
//循环遍历移除控件
foreach (Control c in listControl)
{
this.Controls.Remove(c);
}
listControl = new List<Control>();
ButtonX button = null;
//循环创建控件
for (int i = GroupSize * (currentGroup - 1); i < GroupSize * CurrentGroup; i++)
{
if (i + 1 > PageTotal)
{
break;
}
button = new ButtonX();
button.Text = (i + 1).ToString();
button.Width = ButtonWidth;
button.Height = ButtonHeight;
button.ColorTable = DevComponents.DotNetBar.eButtonColor.OrangeWithBackground;
button.Location = new Point(x, y);
button.Click += new EventHandler(button_Click);
this.Controls.Add(button);
button.BringToFront();
listControl.Add(button);//添加进分页按钮的集合
x += ButtonWidth + ButtonDistance;
}
//上一组是否可用
if (CurrentGroup == 1)
{
btnPreGroup.Enabled = false;
}
else
{
btnPreGroup.Enabled = true;
}
//下一组是否可用
if (CurrentGroup == GroupTotal)
{
btnNextGroup.Enabled = false;
}
else
{
btnNextGroup.Enabled = true;
}
}
/// <summary>
/// 数字按钮分页
/// </summary>
private void button_Click(object sender, EventArgs e)
{
CurrentPage = int.Parse((sender as ButtonX).Text);
PageChanged();
}
/// <summary>
/// 设置上一页、下一页是否可用以及当前页按钮字体颜色
/// </summary>
private void SetBtnPrePageAndBtnNextPage()
{
//上一页是否可用
if (CurrentPage == 1)
{
btnPrePage.Enabled = false;
}
else
{
btnPrePage.Enabled = true;
}
//下一页是否可用
if (CurrentPage == PageTotal)
{
btnNextPage.Enabled = false;
}
else
{
btnNextPage.Enabled = true;
}
//设置数字分页按钮文本颜色
foreach (Control c in this.Controls)
{
//当前页字体为红色
if (c.Text == CurrentPage.ToString() && c is ButtonX)
{
c.ForeColor = Color.Red;
}
else
{
c.ForeColor = Color.Blue;
}
}
}
/// <summary>
/// 上一组
/// </summary>
private void btnPreGroup_Click(object sender, EventArgs e)
{
CurrentGroup--;
BuildPageControl();
CurrentPage = GroupSize * (CurrentGroup - 1) + 1; ;
PageChanged();
}
/// <summary>
/// 下一组
/// </summary>
private void btnNextGroup_Click(object sender, EventArgs e)
{
CurrentGroup++;
BuildPageControl();
CurrentPage = GroupSize * (CurrentGroup - 1) + 1; ;
PageChanged();
}
/// <summary>
/// 上一页
/// </summary>
private void btnPrePage_Click(object sender, EventArgs e)
{
//如果是当前组的第一页，直接上一组
if (CurrentPage == GroupSize * (CurrentGroup - 1) + 1)
{
CurrentGroup--;
BuildPageControl();
CurrentPage --; ;
PageChanged();
return;
}
CurrentPage--;
PageChanged();
}
/// <summary>
/// 下一页
/// </summary>
private void btnNextPage_Click(object sender, EventArgs e)
{
//如果是当前组的最后一页，直接下一组
if (CurrentPage == GroupSize * (CurrentGroup - 1) + GroupSize)
{
btnNextGroup_Click(null, null);
return;
}
CurrentPage++;
PageChanged();
}
/// <summary>
/// 转到第几页
/// </summary>
private void btnGo_Click(object sender, EventArgs e)
{
try
{
CurrentPage = int.Parse(cmbPage.Text);
PageChanged();
}
catch
{
MessageBox.Show("请输入数字");
}
}
}
}