标签：ber read 整数 存储过程 final nta exe win 分页
本例子使用自定义控件方法实现，数据库使用的是SQL Server，实现过程如下：
1、新建一个自定义控件，命名为：PageControl。
2、PageControl代码如下：
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; //属性 public int PageSize { get; set; } = 1; //每页显示记录数 public int PageIndex { get; set; } //页序号 public int TotalCount { get; set; } //总记录数 public int PageCount { get; set; } //总页数 public PageControl() { InitializeComponent(); } //设置页 public void SetPage() { //总记录数 int totalCount = 0; BindPageEvent(PageSize, PageIndex + 1, out totalCount); TotalCount = totalCount; //总页数 if (TotalCount % PageSize == 0) PageCount = TotalCount / PageSize; else PageCount = (int)(TotalCount / PageSize) + 1; //序号 lblSerialNumber.Text = (PageIndex + 1).ToString() + "/" + PageCount.ToString(); } /// <summary> /// 首页 /// </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> /// 上一页 /// </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> /// 下一页 /// </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> /// 末页 /// </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> /// 只能输入正整数 /// </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.Handled = false; else e.Handled = true; } /// <summary> /// 指定页 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void linkGo_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { if (e.Button == MouseButtons.Left) { if (string.IsNullOrEmpty( txtSetPage.Text)) { MessageBox.Show("指定页不能为空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); txtSetPage.Focus(); return; } if(int.Parse(txtSetPage.Text)>PageCount) { MessageBox.Show("指定页已超过总页数。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); txtSetPage.Focus(); return; } PageIndex = int.Parse(txtSetPage.Text) - 1; SetPage(); } } }
3、SQL Server创建存储过程PageTest：
CREATE PROCEDURE PageTest @PageSize int, @PageIndex int, @TotalCount int OUTPUT AS BEGIN SELECT @TotalCount=COUNT(1) FROM MF_MO SELECT TOP (@PageSize) MO_NO,MRP_NO,QTY,BIL_NO FROM MF_MO A WHERE NOT EXISTS (SELECT 1 FROM (SELECT TOP ((@PageIndex-1)*@PageSize) MO_NO FROM MF_MO) B WHERE A.MO_NO=B.MO_NO) END
4、新建一个WinForm程序，命名为Main，并拖入一个DataGridView控件及上面新建的PageControl控件，代码如下：
private void Main_Load(object sender, EventArgs e) { pageControl1.PageSize = 20; pageControl1.PageIndex = 0; pageControl1.BindPageEvent += BindPage; pageControl1.SetPage(); } private void BindPage(int pageSize, int pageIndex, out int totalCount) { SqlConnection conn = null; SqlCommand cmd = null; totalCount = 0; #region 连接数据库测试 try { //数据库连接 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、执行程序：
感觉在200页以内，速度还是可以接受。
好了，分享就到此结束了，希望对有此需要的人有一些帮助。
标签：ber read 整数 存储过程 final nta exe win 分页
原文地址：https://www.cnblogs.com/atomy/p/11854991.html
