KJD/TEMUKJD/UserControls/UcSplitPage.cs

using NaiBa.Util.Extension;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TemuKJD.UserControls
{
    public partial class UcSplitPage : UserControl
    {
        int totalPage = 1;
        public int TotalPage
        {
            get { return totalPage; }
            set
            {
                if (TotalPage != value && value > 0)
                {
                    totalPage = value;
                    if (InvokeRequired)
                    {
                        Invoke(new Action(() =>
                        {
                            this.lblTotal.Text = "共 " + totalPage + " 页";
                        }));
                    }
                    else
                        this.lblTotal.Text = "共 " + totalPage + " 页";
                }
            }
        }

        int currentPage = 1;
        public int CurrentPage
        {
            get { return currentPage; }
            set
            {
                if (currentPage != value)
                {
                    currentPage = value;
                    if (InvokeRequired)
                    {
                        Invoke(new Action(() =>
                        {
                            this.lblPage.Text = "" + currentPage;
                        }));
                    }
                    else
                        this.lblPage.Text = "" + currentPage;
                    OnPageChange(this);
                }
            }
        }

        public event Action<object> PageChange;
        protected virtual void OnPageChange(object sender)
        {
            this.PageChange?.Invoke(sender);
        }

        public UcSplitPage()
        {
            InitializeComponent();
        }

        private void pnlJump_Click(object sender, EventArgs e)
        {
            int page = this.txtJumpPage.Text.ParseToInt();
            this.CurrentPage = Math.Max(1, page);
            
        }

        private void btnPrev_Click(object sender, EventArgs e)
        {
            int page = this.CurrentPage - 1;
            this.CurrentPage = Math.Max(1, page);
        }

        private void btnNext_Click(object sender, EventArgs e)
        {
            int page = this.CurrentPage + 1;
            this.CurrentPage = Math.Min(totalPage, page);
        }
    }
}