DataGridView使用自定義控件實(shí)現(xiàn)簡(jiǎn)單分頁(yè)功能(推薦)

來(lái)源：本站原創(chuàng)|時(shí)間：2020-01-11|欄目：ASP.NET|點(diǎn)擊：次

本例子使用自定義控件方法實(shí)現(xiàn)，數(shù)據(jù)庫(kù)使用的是SQL Server，實(shí)現(xiàn)過(guò)程如下：

1、新建一個(gè)自定義控件，命名為：PageControl。

2、PageControl代碼如下：

 public partial class PageControl : UserControl
  {
    //委托及事件
    public delegate void BindPage(int pageSize, int pageIndex, out int totalCount);
    public event BindPage BindPageEvent;
    //屬性
    public int PageSize { get; set; } = 1; //每頁(yè)顯示記錄數(shù)
    public int PageIndex { get; set; }   //頁(yè)序號(hào)
    public int TotalCount { get; set; }   //總記錄數(shù)
    public int PageCount { get; set; }   //總頁(yè)數(shù)
    public PageControl()
    {
      InitializeComponent();
      //取消下劃線
      linkFirst.LinkBehavior = LinkBehavior.NeverUnderline;
      linkPrev.LinkBehavior = LinkBehavior.NeverUnderline;
      linkNext.LinkBehavior = LinkBehavior.NeverUnderline;
      linkLast.LinkBehavior = LinkBehavior.NeverUnderline;
      linkGo.LinkBehavior = LinkBehavior.NeverUnderline;
    }
    /// <summary>
    /// 設(shè)置頁(yè)
    /// </summary>
    public void SetPage()
    {
      //總記錄數(shù)
      int totalCount = 0;
      BindPageEvent(PageSize, PageIndex + 1, out totalCount);
      TotalCount = totalCount;
      //總頁(yè)數(shù)
      if (TotalCount % PageSize == 0)
        PageCount = TotalCount / PageSize;
      else
        PageCount = TotalCount / PageSize + 1;
      //當(dāng)前頁(yè)及總頁(yè)數(shù)
      txtCurrentPage.Text = (PageIndex + 1).ToString();
      lblTotalPage.Text = "共 " + PageCount.ToString() + " 頁(yè)";
    }
    /// <summary>
    /// 首頁(yè)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkFirst_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
      if (e.Button == MouseButtons.Left)
      {
        PageIndex = 0;
        SetPage();
      }
    }
    /// <summary>
    /// 上一頁(yè)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkPrve_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
      if (e.Button == MouseButtons.Left)
      {
        PageIndex--;
        if (PageIndex < 0)
        {
          PageIndex = 0;
        }
        SetPage();
      }
    }
    /// <summary>
    /// 下一頁(yè)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkNext_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
      if (e.Button == MouseButtons.Left)
      {
        PageIndex++;
        if (PageIndex > PageCount - 1)
        {
          PageIndex = PageCount - 1;
        }
        SetPage();
      }
    }
    /// <summary>
    /// 末頁(yè)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkLast_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
      if (e.Button == MouseButtons.Left)
      {
        PageIndex = PageCount - 1;
        SetPage();
      }
    }
    /// <summary>
    /// 只能按0-9、Delete、Enter、Backspace鍵
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void txtSetPage_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)
        {
          Go();
        }
      }
      else
      {
        e.Handled = true;
      }
    }
    /// <summary>
    /// 指定頁(yè)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkGo_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
      if (e.Button == MouseButtons.Left)
      {
        Go();
      }
    }
    private void Go()
    {
      if (string.IsNullOrEmpty(txtCurrentPage.Text))
      {
        MessageBox.Show("指定頁(yè)不能為空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        txtCurrentPage.Focus();
        return;
      }
      if (int.Parse(txtCurrentPage.Text) > PageCount)
      {
        MessageBox.Show("指定頁(yè)已超過(guò)總頁(yè)數(shù)。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        txtCurrentPage.Focus();
        return;
      }
      PageIndex = int.Parse(txtCurrentPage.Text) - 1;
      SetPage();
    }
    /// <summary>
    /// linkFirst鼠標(biāo)移過(guò)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkFirst_MouseMove(object sender, MouseEventArgs e)
    {
      linkFirst.LinkColor = Color.Red;
    }
    /// <summary>
    /// linkFirst鼠標(biāo)離開(kāi)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkFirst_MouseLeave(object sender, EventArgs e)
    {
      linkFirst.LinkColor = Color.Black;
    }
    /// <summary>
    /// linkPrev鼠標(biāo)移過(guò)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkPrev_MouseMove(object sender, MouseEventArgs e)
    {
      linkPrev.LinkColor = Color.Red;
    }
    /// <summary>
    /// linkPrev鼠標(biāo)離開(kāi)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkPrev_MouseLeave(object sender, EventArgs e)
    {
      linkPrev.LinkColor = Color.Black;
    }
    /// <summary>
    /// linkNext鼠標(biāo)移過(guò)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkNext_MouseMove(object sender, MouseEventArgs e)
    {
      linkNext.LinkColor = Color.Red;
    }
    /// <summary>
    /// linkNext鼠標(biāo)離開(kāi)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkNext_MouseLeave(object sender, EventArgs e)
    {
      linkNext.LinkColor = Color.Black;
    }
    /// <summary>
    /// linkLast鼠標(biāo)移過(guò)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkLast_MouseMove(object sender, MouseEventArgs e)
    {
      linkLast.LinkColor = Color.Red;
    }
    /// <summary>
    /// linkLast鼠標(biāo)離開(kāi)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkLast_MouseLeave(object sender, EventArgs e)
    {
      linkLast.LinkColor = Color.Black;
    }
    /// <summary>
    /// linkGo鼠標(biāo)移過(guò)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkGo_MouseMove(object sender, MouseEventArgs e)
    {
      linkGo.LinkColor = Color.Red;
    }
    /// <summary>
    /// linkGo鼠標(biāo)離開(kāi)顏色
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void linkGo_MouseLeave(object sender, EventArgs e)
    {
      linkGo.LinkColor = Color.Black;
    }
  }

3、SQL Server創(chuàng)建存儲(chǔ)過(guò)程PageTest：

CREATE PROCEDURE [dbo].[PageTest]
  @PageSize INT,
  @PageIndex INT,
  @TotalCount INT OUTPUT
AS
BEGIN
  --總記錄數(shù)
  SELECT @TotalCount=COUNT(1) FROM MF_MO
  
  --記錄返回(使用動(dòng)態(tài)SQL繞開(kāi)參數(shù)嗅探問(wèn)題，效率大幅度提升。)
  DECLARE @SQL NVARCHAR(1000)
  SET @SQL=
    'SELECT TOP ('+CONVERT(VARCHAR(32),@PageSize)+') MO_NO,MRP_NO,QTY,BIL_NO '+
    'FROM MF_MO A '+
    'WHERE NOT EXISTS (SELECT 1 FROM (SELECT TOP ('+CONVERT(VARCHAR(32),(@PageIndex-1)*@PageSize)+') MO_NO FROM MF_MO ORDER BY MO_NO) B WHERE A.MO_NO=B.MO_NO) '+
    'ORDER BY MO_NO'
  EXEC (@SQL)
END

4、新建一個(gè)WinForm程序，命名為Main，并拖入一個(gè)DataGridView控件及上面新建的PageControl控件，代碼如下：

private void Main_Load(object sender, EventArgs e)
    {
      pageControl1.PageSize = 20;
      pageControl1.PageIndex = 0;
      pageControl1.BindPageEvent += BindPage;
      pageControl1.SetPage();
    }
    /// <summary>
    /// 綁定頁(yè)
    /// </summary>
    /// <param name="pageSize">每頁(yè)顯示記錄數(shù)</param>
    /// <param name="pageIndex">頁(yè)序號(hào)</param>
    /// <param name="totalCount">總記錄數(shù)</param>
    private void BindPage(int pageSize, int pageIndex, out int totalCount)
    {
      SqlConnection conn = null;
      SqlCommand cmd = null;
      totalCount = 0;
      #region 連接數(shù)據(jù)庫(kù)測(cè)試
      try
      {
        //數(shù)據(jù)庫(kù)連接
        conn = new SqlConnection("server=.;database=DB_TEST;Uid=sa;pwd=********;");
        conn.Open();
        //SqlCommand
        cmd = new SqlCommand();
        cmd.Connection = conn;
        cmd.CommandText = "PageTest";
        cmd.CommandType = CommandType.StoredProcedure;
        SqlParameter[] param =
        {
          new SqlParameter("@PageSize",SqlDbType.Int),
          new SqlParameter("@PageIndex",SqlDbType.Int),
          new SqlParameter("@TotalCount",SqlDbType.Int)
        };
        param[0].Value = pageSize;
        param[1].Value = pageIndex;
        param[2].Direction = ParameterDirection.Output;
        cmd.Parameters.AddRange(param);
        //DataTable
        DataTable dt = new DataTable("MF_MO");
        dt.Columns.Add(new DataColumn("MO_NO", typeof(String)));
        dt.Columns.Add(new DataColumn("MRP_NO", typeof(String)));
        dt.Columns.Add(new DataColumn("QTY", typeof(Decimal)));
        dt.Columns.Add(new DataColumn("BIL_NO", typeof(String)));
        #region 方法一：SqlDataReader
        SqlDataReader dr = cmd.ExecuteReader();
        dt.Load(dr, LoadOption.PreserveChanges);
        dr.Close();
        totalCount = (int)param[2].Value;
        dataGridView1.DataSource = dt;
        #endregion
        #region #方法二：SqlDataAdapter
        //SqlDataAdapter da = new SqlDataAdapter();
        //da.SelectCommand = cmd;
        //dt.BeginLoadData();
        //da.Fill(dt);
        //dt.EndLoadData();
        //totalCount = (int)param[2].Value;
        //dataGridView1.DataSource = dt;
        #endregion
      }
      catch (Exception ex)
      {
        MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
      }
      finally
      {
        conn.Close();
        cmd.Dispose();
      }
      #endregion
    }

5、執(zhí)行程序：

總結(jié)

以上所述是小編給大家介紹的DataGridView使用自定義控件實(shí)現(xiàn)簡(jiǎn)單分頁(yè)功能，希望對(duì)大家有所幫助，如果大家有任何疑問(wèn)請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)我們網(wǎng)站的支持！
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