29WxOrder/Work/BaseForms/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 Work.UserControls
{
    public partial class UcSplitPage : UserControl
    {
        /// <summary>
        /// 是否显示每页条数(启用每页条数功能)
        /// </summary>
        [Description("显示每页条数"), Category("UserProperty")]
        public bool IsShowPageSize
        {
            get
            {
                return this.cmbPageSize.Visible;
            }
            set
            {
                if (cmbPageSize.Visible != value)
                {
                    this.lblPageSize.Visible = this.cmbPageSize.Visible = value;
                    this.Invalidate();
                }
            }
        }

        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);
            }
        }

        [Description("每页条数"), Category("UserProperty")]
        public int PageSize
        {
            get
            {
                int pageSize = 50;
                if (InvokeRequired)
                {
                    Invoke(new Action(() =>
                    {
                        pageSize = Math.Max(this.cmbPageSize.Text.ParseToInt(), 1);
                    }));
                }
                else 
                    pageSize = Math.Max(this.cmbPageSize.Text.ParseToInt(), 1);
                return pageSize;
            }
            set
            {
                if (InvokeRequired)
                {
                    Invoke(new Action(() =>
                    {
                        if (this.cmbPageSize.Text.ParseToInt() != value)
                            this.cmbPageSize.Text = value.ParseToString();
                        else
                            this.cmbPageSize.Text = value.ParseToString();
                    }));
                }
                else
                {
                    if (this.cmbPageSize.Text.ParseToInt() != value)
                        this.cmbPageSize.Text = value.ParseToString();
                    else
                        this.cmbPageSize.Text = value.ParseToString();
                }
                //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);
        }
    }
}