dev 分页控件_datagridview分页[通俗易懂]

devexprsss自带的分页控件功能单一，且用户体验感差，为此，本人自定义了一个分页控件。废话不多说，上效果图！

下面是分页控件设计窗口：

 下面是分页控件代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using IMS_TOOLS.Unit.Unit;

namespace IMS_TOOLS.UI.pageControl
{
    public partial class pageControl : UserControl
    {
        public delegate void GetPageDataEvents();//定义委托
        public event GetPageDataEvents getDataEvnet;//定义事件

        public pageControl()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 总记录数
        /// </summary>
        private int record = 0;
        public int RecordNum
        {
            get { return record; }
            set { record = value; }
        }

        /// <summary>
        /// 每页条数
        /// </summary>
        private int pageSize = 10;
        public int PageSize
        {
            get { return pageSize; }
            set { pageSize = value; }
        }

        /// <summary>
        /// 当前页
        /// </summary>
        private int currentPage = 1;
        public int CurrentPage
        {
            get { return currentPage; }
            set { currentPage = value; }
        }         
        
        /// <summary>
        /// 总页数
        /// </summary>
        public int pageNum = 1;
        public int PageNum
        {
            get
            {
                if (RecordNum == 0)
                {
                    pageNum = 1;
                }
                else
                {
                    if (RecordNum % PageSize > 0)
                    {
                        pageNum = RecordNum / PageSize + 1;
                    }
                    else
                    {
                        pageNum = RecordNum / PageSize;
                    }
                }
                return pageNum;
            }
        }

        public void SetSpinHide()
        {
            layoutControlItem8.Visibility = DevExpress.XtraLayout.Utils.LayoutVisibility.Never;
            layoutControlItem9.Visibility = DevExpress.XtraLayout.Utils.LayoutVisibility.Never;
        }

        /// <summary>
        /// 改变分页控件的显示
        /// </summary>
        public void InitPageInfo()
        {
            this.labelInfo.Text = string.Format("页/共{0}页({1}笔记录)", PageNum, RecordNum);
            this.txtNumber.Text = CurrentPage.ToString();  
            this.spinPageSize.Text = PageSize.ToString();
            if (CurrentPage == 0 ||
                CurrentPage > pageNum)
            {
                MessageDxUtil.ShowTips("输入的页码不存在!");
            }
            // 设置按钮状态
            if (1 == CurrentPage)
            {
                btnFirstPage.Enabled = false;
                btnPrePage.Enabled = false;
            }
            if (1 == PageNum)
            {
                btnFirstPage.Enabled = false;
                btnPrePage.Enabled = false;
                btnLastPage.Enabled = false;
                btnNextPage.Enabled = false;
            }
            if (CurrentPage == PageNum)
            {
                btnLastPage.Enabled = false;
                btnNextPage.Enabled = false;
            }
        }

        /// <summary>
        /// 按钮点击事件
        /// </summary>
        private void BtnEvents(object sender, EventArgs e)
        {
            if (getDataEvnet != null)
            {
                btnPrePage.Enabled = true;
                btnNextPage.Enabled = true;
                btnLastPage.Enabled = true;
                btnFirstPage.Enabled = true;
                DevExpress.XtraEditors.SimpleButton button = sender as DevExpress.XtraEditors.SimpleButton;
                string btmTag = button.Tag + "";
                if (btmTag == "first")//首页按钮单击事件出发
                {
                    CurrentPage = 1;
                    getDataEvnet();
                    btnPrePage.Enabled = false;
                    btnFirstPage.Enabled = false;
                }
                if (btmTag == "prv")//上一页按钮单击事件被触发
                {
                    CurrentPage -= 1;
                    getDataEvnet();
                    this.txtNumber.Text = CurrentPage.ToString();
                    if (CurrentPage == 1)
                    {
                        btnPrePage.Enabled = false;
                        btnFirstPage.Enabled = false;
                    }
                }
                if (btmTag == "next")
                {
                    CurrentPage += 1;
                    getDataEvnet();
                    this.txtNumber.Text = CurrentPage.ToString();
                    if (CurrentPage == PageNum)
                    {
                        btnNextPage.Enabled = false;
                        btnLastPage.Enabled = false;
                    }
                }
                if (btmTag == "last")
                {
                    CurrentPage = PageNum;
                    getDataEvnet();
                    btnNextPage.Enabled = false;
                    btnLastPage.Enabled = false;
                }
            }
        }

        /// <summary>
        /// 每页大小改变事件
        /// </summary>
        private void spinPageSize_EditValueChanged(object sender, EventArgs e)
        {
            if (getDataEvnet != null)
            {
                btnPrePage.Enabled = true;
                btnNextPage.Enabled = true;
                btnLastPage.Enabled = true;
                btnFirstPage.Enabled = true;
                PageSize = Convert.ToInt32(spinPageSize.Text);
                getDataEvnet();
            }
        }
    }
}

下面是控件的调用： 

在要使用分页控件的类中定义分页控件的实例pageCtrl，然后在构造函数中关注分页控件的事件 ，如下代码：

        public InspectResultRoTaskInfo()
        {
            InitializeComponent();
            pageCtrl.getDataEvnet += getDataFromDB;
        }

紧接着是实现分页控件事件的详细处理(查询数据库，并更新分页控件信息)，代码如下：

        private void getDataFromDB()
        {
            //显示等待窗口
            SplashScreenManager.ShowForm(typeof(WaitForm1));
            int recordCount = 0;
            DataTable table = inspectResultRoTaskService.getResultRoTaskInfo(pageCtrl.CurrentPage, pageCtrl.PageSize, out recordCount);
            table.Columns.Add("CHECKED", System.Type.GetType("System.Boolean"));
            foreach (DataRow row in table.Rows)
            {
                if (0 == string.Compare("3", row["TASK_STATUS"] + ""))
                {
                    row["CHECKED"] = true;
                    BaseUtil.TASK_ID = row["TASK_ID"] + "";
                }
            }
            gridCtrlTask.DataSource = table;
            pageCtrl.RecordNum = recordCount;
            pageCtrl.InitPageInfo();
            //关闭等待窗口
            SplashScreenManager.CloseForm();
        }

今天的文章dev 分页控件_datagridview分页[通俗易懂]分享到此就结束了，感谢您的阅读。