[DevExpress]GridControl分页的实现 admin 2023-05-26 11:00:02 篇首语：本文由小编为大家整理，主要介绍了[DevExpress]GridControl分页的实现相关的知识，希望对你有一定的参考价值。 加入两个组件：BindingNavigator和BindingSource代码：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.SqlClient;using System.Drawing;using System.Text;using System.Linq;using System.Threading.Tasks;using System.Windows.Forms;using DevExpress.XtraEditors;using DZAMS.DBUtility;namespace DZAMS.Demo{ public partial class GridPage_Frm : DevExpress.XtraEditors.XtraForm { public DataTable dt = new DataTable(); StoreProcedure sp; private int pageSize = 10; //每页显示行数 private int nMax = 0; //总记录数 private int pageCount = 0; //页数＝总记录数/每页显示行数 private int pageCurrent = 0; //当前页号 private DataSet ds = new DataSet(); private DataTable dtInfo = new DataTable(); public GridPage_Frm() { InitializeComponent(); } private void GridPage_Frm_Load(object sender, EventArgs e) { string strQuery = string.Format("SELECT Id, UserCode, UserName, RoleName, Ip, Mac, LoginTime FROM DZ_LoginLog"); dt = SqlHelper.ExecuteDataset(SqlHelper.conn, CommandType.Text, strQuery.ToString()).Tables[0]; gridControl1.DataSource = dt; string strConn = "SERVER=(local);DATABASE=DZ;UID=sa;PWD=XXXX"; //数据库连接字符串 SqlConnection conn = new SqlConnection(strConn); conn.Open(); string strSql = "SELECT count(*) as num FROM DZ_LoginLog"; SqlDataAdapter sda = new SqlDataAdapter(strSql, conn); sda.Fill(ds, "ds"); conn.Close(); nMax = Convert.ToInt32(ds.Tables[0].Rows[0]["num"].ToString()); lblTotalCount.Text = nMax.ToString(); lblPageSize.Text = pageSize.ToString(); sp = new StoreProcedure("Pr_Monitor_Pagination", strConn); dtInfo = sp.ExecuteDataTable("DZ_LoginLog", "Id", "Id desc", pageCurrent++, pageSize); InitDataSet(); } private void InitDataSet() { pageCount = (nMax / pageSize); //计算出总页数 if ((nMax % pageSize) > 0) pageCount++; pageCurrent = 1; //当前页数从1開始 LoadData(); } private void LoadData() { lblPageCount.Text = "/"+pageCount.ToString(); txtCurrentPage.Text = Convert.ToString(pageCurrent); this.bdsInfo.DataSource = dtInfo; this.bdnInfo.BindingSource = bdsInfo; this.gridControl1.DataSource = bdsInfo; } private void bdnInfo_ItemClicked(object sender, ToolStripItemClickedEventArgs e) { if (e.ClickedItem.Text == "导出当前页") { SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Title = "导出Excel"; saveFileDialog.Filter = "Excel文件(*.xls)|*.xls"; DialogResult dialogResult = saveFileDialog.ShowDialog(this); if (dialogResult == DialogResult.OK) { DevExpress.XtraPrinting.XlsExportOptions options = new DevExpress.XtraPrinting.XlsExportOptions(); gridControl1.ExportToXls(saveFileDialog.FileName, options); // gridControl1.ExportToExcelOld(saveFileDialog.FileName); DevExpress.XtraEditors.XtraMessageBox.Show("保存成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } } if (e.ClickedItem.Text == "关闭") { this.Close(); } if (e.ClickedItem.Text == "首页") { pageCurrent--; if (pageCurrent <= 0) { MessageBox.Show("已经是首页。请点击“下一页”查看！"); return; } else { pageCurrent = 1; dtInfo = sp.ExecuteDataTable("DZ_LoginLog", "Id", "Id desc", pageCurrent, pageSize); } } if (e.ClickedItem.Text == "上一页") { pageCurrent--; if (pageCurrent <= 0) { MessageBox.Show("已经是第一页，请点击“下一页”查看！"); return; } else { dtInfo = sp.ExecuteDataTable("DZ_LoginLog", "Id", "Id desc", pageCurrent, pageSize); } } if (e.ClickedItem.Text == "下一页") { pageCurrent++; if (pageCurrent > pageCount) { MessageBox.Show("已经是最后一页。请点击“上一页”查看。"); return; } else { dtInfo = sp.ExecuteDataTable("DZ_LoginLog", "Id", "Id desc", pageCurrent, pageSize); } } if (e.ClickedItem.Text == "尾页") { pageCurrent++; if (pageCurrent > pageCount) { MessageBox.Show("已经是尾页，请点击“上一页”查看。"); return; } else { pageCurrent = pageCount; dtInfo = sp.ExecuteDataTable("DZ_LoginLog", "Id", "Id desc", pageCount, pageSize); } } LoadData(); } }}StoreProcedure类： public class StoreProcedure { // 存储过程名称。 private string _name; // 数据库连接字符串。 private string _conStr; // 构造函数 // sprocName: 存储过程名称； // conStr: 数据库连接字符串。 public StoreProcedure(string sprocName, string conStr) { _conStr = conStr; _name = sprocName; } // 运行存储过程，不返回值。 // paraValues: 參数值列表。 // return: void public void ExecuteNoQuery(params object[] paraValues) { using (SqlConnection con = new SqlConnection(_conStr)) { SqlCommand comm = new SqlCommand(_name, con); comm.CommandType = CommandType.StoredProcedure; AddInParaValues(comm, paraValues); con.Open(); comm.ExecuteNonQuery(); con.Close(); } } // 运行存储过程返回一个表。 // paraValues: 參数值列表。 // return: DataTable public DataTable ExecuteDataTable(params object[] paraValues) { SqlCommand comm = new SqlCommand(_name, new SqlConnection(_conStr)); comm.CommandType = CommandType.StoredProcedure; AddInParaValues(comm, paraValues); SqlDataAdapter sda = new SqlDataAdapter(comm); DataTable dt = new DataTable(); sda.Fill(dt); return dt; } // 运行存储过程。返回SqlDataReader对象。 // 在SqlDataReader对象关闭的同一时候。数据库连接自己主动关闭。 // paraValues: 要传递给给存储过程的參数值类表。 // return: SqlDataReader public SqlDataReader ExecuteDataReader(params object[] paraValues) { SqlConnection con = new SqlConnection(_conStr); SqlCommand comm = new SqlCommand(_name, con); comm.CommandType = CommandType.StoredProcedure; AddInParaValues(comm, paraValues); con.Open(); return comm.ExecuteReader(CommandBehavior.CloseConnection); } // 获取存储过程的參数列表。 private ArrayList GetParas() { SqlCommand comm = new SqlCommand("dbo.sp_sproc_columns_90", new SqlConnection(_conStr)); comm.CommandType = CommandType.StoredProcedure; comm.Parameters.AddWithValue("@procedure_name", (object)_name); SqlDataAdapter sda = new SqlDataAdapter(comm); DataTable dt = new DataTable(); sda.Fill(dt); ArrayList al = new ArrayList(); for (int i = 0; i < dt.Rows.Count; i++) { al.Add(dt.Rows[i][3].ToString()); } return al; } // 为 SqlCommand 加入參数及赋值。 private void AddInParaValues(SqlCommand comm, params object[] paraValues) { comm.Parameters.Add(new SqlParameter("@RETURN_VALUE", SqlDbType.Int)); comm.Parameters["@RETURN_VALUE"].Direction = ParameterDirection.ReturnValue; if (paraValues != null) { ArrayList al = GetParas(); for (int i = 0; i < paraValues.Length; i++) { comm.Parameters.AddWithValue(al[i + 1].ToString(), paraValues[i]); } } } }存储过程：ALTER procedure [dbo].[Pr_Monitor_Pagination] -- ============================================= == Paging == ============================================= --Author:Lee--Create date: 2010 611--Parameter:--1.Tables :The Name Of Table or view --2.PrimaryKey :Primary Key --3.Sort :Ordering Statement，Without Order By, For Example：NewsID Desc,OrderRows Asc --4.CurrentPage :The Page Number Of Current page--5.PageSize :The Size Of One Page"s Group --6.Fields :The Field Of You Needed--7.Filter :Where Condition，Without Where --8.Group :Group Condition。Without Group By --9.GetCount :Return The Number Of All, Not Zero --Updates:--2010 6 9 Create Procedure.-- ======================================================================================================== @Tables varchar(600), @PrimaryKey varchar(100), @Sort varchar(200)=null, @CurrentPage bigint=1, @PageSize bigint=10, @Fields varchar(1000)="*", @Filter varchar(1000)=null, @Group varchar(1000)=null, @GetCount bit=0 as if(@GetCount=0) begin/*Ordering Of Default */ if @Sort is null or @Sort=""set @[email protected]declare @SortTable varchar(100)declare @SortName varchar(100) declare @strSortColumn varchar(200) declare @operator char(2) declare @type varchar(100) declare @prec int /*Setting Condition Of Ordering*/ if charindex("desc",@Sort)>0 begin set @strSortColumn=replace(@Sort,"desc","") set @operator="<=" end else begin if charindex("asc",@Sort)=0 set @strSortColumn=replace(@Sort,"asc","") set @operator=">=" end if charindex(".",@strSortColumn)>0 begin set @SortTable=substring(@strSortColumn,0,charindex(".",@strSortColumn)) set @SortName=substring(@strSortColumn,charindex(".",@strSortColumn)+1,len(@strSortColumn)) end else begin set @[email protected] set @[email protected] end select @type=t.name,@prec=c.prec from sysobjects o join syscolumns c on o.id=c.id join systypes t on c.xusertype=t.xusertype where [email protected] and [email protected]if charindex("char",@type)>0 set @[email protected]+"("+cast(@prec as varchar)+")" declare @strPageSize varchar(50) declare @strStartRow varchar(50) declare @strFilter varchar(1000) declare @strSimpleFilter varchar(1000) declare @strGroup varchar(1000) /*CurrentPage Of Default*/ if @CurrentPage<1 set @CurrentPage=1 /*Setting Paging param*/ set @strPageSize=cast(@PageSize as varchar(50)) set @strStartRow=cast(((@CurrentPage-1)*@PageSize+1) as varchar(50)) /*Condition Of Filter And Group*/ if @Filter is not null and @Filter!="" begin set @strFilter=" where "[email protected]+" " set @strSimpleFilter=" and "[email protected] +" " end else begin set @strSimpleFilter="" set @strFilter="" end if @Group is not null and @Group!="" set @strGroup=" group by "[email protected]+" " else set @strGroup="" exec(" declare @SortColumn "+ @type + " set RowCount " + @strStartRow+ " select @SortColumn=" + @strSortColumn + " from " + @Tables+ @strFilter + " " + @strGroup + " Order by " + @Sort+ " set rowcount " + @strPageSize + " select " + @Fields + " from " + @Tables + " where " + @strSortColumn + @operator+ "@SortColumn " + @strSimpleFilter + " " + @strGroup + " Order by " + @Sort + " ") end else begin declare @strSQL varchar(5000) if @Filter !="" set @strSQL = "select count(" + @PrimaryKey + ") as Total from [" + @Tables + "] where " + @Filter else set @strSQL = "select count(" + @PrimaryKey + ") as Total from [" + @Tables + "]" exec(@strSQL) end 效果： 以上是关于[DevExpress]GridControl分页的实现的主要内容，如果未能解决你的问题，请参考以下文章 JS阻止冒泡和取消默认事件(默认行为) 使用alicode和git管理项目 您可能还会对下面的文章感兴趣： 相关文章 浏览器打不开网址提示“ERR_CONNECTION_TIMED_OUT”错误代码的解决方法 如何安装ocx控件 VMware的虚拟机为啥ip地址老是自动变化 vbyone和EDP区别 linux/debian到底怎么重启和关机 苹果平板键盘被弄到上方去了，如何调回正常？ 机器学习常用距离度量 如何查看kindle型号
