private int pageSize;   //每页显示记录数private int pageIndex;  //页序号private int totalCount; //总记录数private int pageCount;  //总页数public BindingNavigatorMain(){InitializeComponent();}private void BindingNavigatorMain_Load(object sender, EventArgs e){pageSize = 20;pageIndex = 0;SetPage();}//设置页private void SetPage(){//总记录数totalCount = 0;BindPage(pageSize, pageIndex + 1, out totalCount);//总页数if (totalCount % pageSize == 0)pageCount = totalCount / pageSize;elsepageCount = totalCount / pageSize + 1;//当前页及总页数txtCurrentPage.Text = (pageIndex + 1).ToString();lblTotalPage.Text = "共 " + pageCount.ToString() + " 页";//BindingNavigator数据源不进行BindingSource赋值，但恢复控件可用性。bindingNavigatorMoveFirstItem.Enabled = true;bindingNavigatorMovePreviousItem.Enabled = true;txtCurrentPage.Enabled = true;lblTotalPage.Enabled = true;bindingNavigatorMoveNextItem.Enabled = true;bindingNavigatorMoveLastItem.Enabled = true;}/// <summary>/// 绑定页/// </summary>/// <param name="pageSize">每页显示记录数</param>/// <param name="pageIndex">页序号</param>/// <param name="totalCount">总记录数</param>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();//SqlCommandcmd = 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);//DataTableDataTable 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：SqlDataReaderSqlDataReader 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}/// <summary>/// 首页/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void bindingNavigatorMoveFirstItem_Click(object sender, EventArgs e){pageIndex = 0;SetPage();}/// <summary>/// 上一页/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void bindingNavigatorMovePreviousItem_Click(object sender, EventArgs e){pageIndex--;if (pageIndex < 0){pageIndex = 0;}SetPage();}/// <summary>/// 下一页/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void bindingNavigatorMoveNextItem_Click(object sender, EventArgs e){pageIndex++;if (pageIndex > pageCount - 1){pageIndex = pageCount - 1;}SetPage();}/// <summary>/// 末页/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void bindingNavigatorMoveLastItem_Click(object sender, EventArgs e){pageIndex = pageCount - 1;SetPage();}/// <summary>/// 只能按0-9、Delete、Enter、Backspace键/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void txtCurrentPage_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>/// 指定页/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnGo_Click(object sender, EventArgs e){Go();}private void Go(){if (string.IsNullOrEmpty(txtCurrentPage.Text)){MessageBox.Show("指定页不能为空。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);txtCurrentPage.Focus();return;}if (int.Parse(txtCurrentPage.Text) > pageCount){MessageBox.Show("指定页已超过总页数。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);txtCurrentPage.Focus();return;}pageIndex = int.Parse(txtCurrentPage.Text) - 1;SetPage();}

CREATE PROCEDURE [dbo].[PageTest]@PageSize INT,@PageIndex INT,@TotalCount INT OUTPUT
AS
BEGIN--总记录数SELECT @TotalCount=COUNT(1) FROM MF_MO--记录返回(使用动态SQL绕开参数嗅探问题，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