千万级数据分页存储过程示例！

----填写正确的数据库连接配置后使用连接按钮连接数据库，选择相应的数据库，表名以及索引字段，点读取数据按钮即可获取分页数据，如果你的数据库中不包含 GetRecordFromPage 分页存储过程，请先建立，内容请见 Depends 目录下的 GetRecordFromPage.sql
/*
函数名称: GetRecordFromPage
函数功能: 获取指定页的数据
参数说明: @tblName 包含数据的表名
@fldName 关键字段名
@PageSize 每页记录数
@PageIndex 要获取的页码
@OrderType 排序类型, 0 - 升序, 1 - 降序
@strWhere 查询条件 (注意: 不要加 where)
作　　者: 铁拳
邮　　箱: sunjianhua_kki@sina.com
创建时间: 2004-07-04
修改时间: 2004-07-04
*/
CREATE PROCEDURE GetRecordFromPage
@tblName varchar(255), -- 表名
@fldName varchar(255), -- 字段名
@PageSize int = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@OrderType bit = 0, -- 设置排序类型, 非 0 值则降序
@strWhere varchar(2000) = '' -- 查询条件 (注意: 不要加 where)
AS

declare @strSQL varchar(6000) -- 主语句
declare @strTmp varchar(1000) -- 临时变量
declare @strOrder varchar(500) -- 排序类型

if @OrderType != 0
begin
set @strTmp = '<(select min'
set @strOrder = ' order by [' + @fldName + '] desc'
end
else
begin
set @strTmp = '>(select max'
set @strOrder = ' order by [' + @fldName +'] asc'
end

set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
+ @tblName + '] where [' + @fldName + ']' + @strTmp + '(['
+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['
+ @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'
+ @strOrder

if @strWhere != ''
set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
+ @tblName + '] where [' + @fldName + ']' + @strTmp + '(['
+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['
+ @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' '
+ @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

if @PageIndex = 1
begin
set @strTmp = ''
if @strWhere != ''
set @strTmp = ' where (' + @strWhere + ')'

set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
+ @tblName + ']' + @strTmp + ' ' + @strOrder
end

exec (@strSQL)

GO

--------代码
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;

namespace PageSample
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class formMain : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox grpConSet;
private System.Windows.Forms.TextBox txtPwd;
private System.Windows.Forms.TextBox txtUid;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.GroupBox grpTblSet;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.ComboBox cboDB;

private SqlConnection g_con = new SqlConnection();
private int iCurrentPage = 1;
private int iRecordCount = 0;

private System.Windows.Forms.GroupBox grpResult;
private System.Windows.Forms.ComboBox cboTbl;
private System.Windows.Forms.TextBox txtServer;
private System.Windows.Forms.Button btnConnect;
private System.Windows.Forms.Button btnExit;
private System.Windows.Forms.Button btnNext;
private System.Windows.Forms.Button btnPrev;
private System.Windows.Forms.Button btnGo;
private System.Windows.Forms.DataGrid dgResult;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button btnRefresh;
private System.Windows.Forms.ComboBox cboField;
private System.Windows.Forms.Label label8;
private System.Windows.Forms.Label label9;
private System.Windows.Forms.TextBox txtWhere;
private System.Windows.Forms.Label label10;
private System.Windows.Forms.ComboBox cboSort;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.NumericUpDown nudSize;
private System.Windows.Forms.Button btnRead;
private System.Windows.Forms.NumericUpDown nudIndex;
private System.Windows.Forms.Label lblState;

/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public formMain()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)

{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.grpConSet = new System.Windows.Forms.GroupBox();
this.txtPwd = new System.Windows.Forms.TextBox();
this.txtUid = new System.Windows.Forms.TextBox();
this.txtServer = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.grpTblSet = new System.Windows.Forms.GroupBox();
this.cboField = new System.Windows.Forms.ComboBox();
this.label8 = new System.Windows.Forms.Label();
this.cboTbl = new System.Windows.Forms.ComboBox();
this.cboDB = new System.Windows.Forms.ComboBox();
this.label5 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.grpResult = new System.Windows.Forms.GroupBox();
this.btnGo = new System.Windows.Forms.Button();
this.label6 = new System.Windows.Forms.Label();
this.nudSize = new System.Windows.Forms.NumericUpDown();
this.cboSort = new System.Windows.Forms.ComboBox();
this.label10 = new System.Windows.Forms.Label();
this.txtWhere = new System.Windows.Forms.TextBox();
this.label9 = new System.Windows.Forms.Label();
this.nudIndex = new System.Windows.Forms.NumericUpDown();
this.btnNext = new System.Windows.Forms.Button();
this.btnPrev = new System.Windows.Forms.Button();
this.dgResult = new System.Windows.Forms.DataGrid();
this.lblState = new System.Windows.Forms.Label();
this.btnConnect = new System.Windows.Forms.Button();
this.btnExit = new System.Windows.Forms.Button();
this.btnRead = new System.Windows.Forms.Button();
this.btnRefresh = new System.Windows.Forms.Button();
this.grpConSet.SuspendLayout();
this.grpTblSet.SuspendLayout();
this.grpResult.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.nudSize)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.nudIndex)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.dgResult)).BeginInit();
this.SuspendLayout();
//
// grpConSet
//
this.grpConSet.Controls.Add(this.txtPwd);
this.grpConSet.Controls.Add(this.txtUid);
this.grpConSet.Controls.Add(this.txtServer);
this.grpConSet.Controls.Add(this.label3);
this.grpConSet.Controls.Add(this.label2);
this.grpConSet.Controls.Add(this.label1);
this.grpConSet.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.grpConSet.Location = new System.Drawing.Point(16, 16);
this.grpConSet.Name = "grpConSet";
this.grpConSet.Size = new System.Drawing.Size(192, 112);
this.grpConSet.TabIndex = 0;
this.grpConSet.TabStop = false;
this.grpConSet.Text = "连接设置";
//
// txtPwd
//
this.txtPwd.Location = new System.Drawing.Point(72, 72);
this.txtPwd.Name = "txtPwd";
this.txtPwd.PasswordChar = '*';
this.txtPwd.Size = new System.Drawing.Size(104, 21);
this.txtPwd.TabIndex = 5;
this.txtPwd.Text = "";
//
// txtUid
//
this.txtUid.Location = new System.Drawing.Point(72, 48);
this.txtUid.Name = "txtUid";
this.txtUid.Size = new System.Drawing.Size(104, 21);
this.txtUid.TabIndex = 3;
this.txtUid.Text = "sa";
//
// txtServer
//
this.txtServer.Location = new System.Drawing.Point(72, 24);
this.txtServer.Name = "txtServer";
this.txtServer.Size = new System.Drawing.Size(104, 21);
this.txtServer.TabIndex = 1;
this.txtServer.Text = "(local)";
//
// label3
//
this.label3.AutoSize = true;
this.label3.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label3.Location = new System.Drawing.Point(16, 74);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(54, 17);
this.label3.TabIndex = 4;
this.label3.Text = "登录密码";
//
// label2
//
this.label2.AutoSize = true;
this.label2.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label2.Location = new System.Drawing.Point(16, 50);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(54, 17);
this.label2.TabIndex = 2;
this.label2.Text = "登录名称";
//
// label1
//
this.label1.AutoSize = true;
this.label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label1.Location = new System.Drawing.Point(16, 26);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(54, 17);
this.label1.TabIndex = 0;
this.label1.Text = "网络地址";
//
// grpTblSet
//
this.grpTblSet.Controls.Add(this.cboField);
this.grpTblSet.Controls.Add(this.label8);
this.grpTblSet.Controls.Add(this.cboTbl);
this.grpTblSet.Controls.Add(this.cboDB);
this.grpTblSet.Controls.Add(this.label5);
this.grpTblSet.Controls.Add(this.label4);
this.grpTblSet.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.grpTblSet.Location = new System.Drawing.Point(224, 16);
this.grpTblSet.Name = "grpTblSet";
this.grpTblSet.Size = new System.Drawing.Size(264, 112);
this.grpTblSet.TabIndex = 1;
this.grpTblSet.TabStop = false;
this.grpTblSet.Text = "表名设置";
//
// cboField
//
this.cboField.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboField.Location = new System.Drawing.Point(72, 72);
this.cboField.MaxDropDownItems = 20;
this.cboField.Name = "cboField";
this.cboField.Size = new System.Drawing.Size(176, 20);
this.cboField.TabIndex = 5;
this.cboField.SelectedIndexChanged += new System.EventHandler(this.cboField_SelectedIndexChanged);
//
// label8
//
this.label8.AutoSize = true;
this.label8.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label8.Location = new System.Drawing.Point(16, 74);
this.label8.Name = "label8";
this.label8.Size = new System.Drawing.Size(54, 17);
this.label8.TabIndex = 4;
this.label8.Text = "关键字段";
//
// cboTbl
//
this.cboTbl.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboTbl.Location = new System.Drawing.Point(72, 48);
this.cboTbl.MaxDropDownItems = 20;
this.cboTbl.Name = "cboTbl";
this.cboTbl.Size = new System.Drawing.Size(176, 20);
this.cboTbl.TabIndex = 3;
this.cboTbl.SelectedIndexChanged += new System.EventHandler(this.cboTbl_SelectedIndexChanged);
//
// cboDB
//
this.cboDB.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboDB.Location = new System.Drawing.Point(72, 24);
this.cboDB.MaxDropDownItems = 20;
this.cboDB.Name = "cboDB";
this.cboDB.Size = new System.Drawing.Size(176, 20);
this.cboDB.TabIndex = 1;
this.cboDB.SelectedIndexChanged += new System.EventHandler(this.cboDB_SelectedIndexChanged);
//
// label5
//
this.label5.AutoSize = true;
this.label5.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label5.Location = new System.Drawing.Point(16, 50);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(54, 17);
this.label5.TabIndex = 2;
this.label5.Text = "关键表名";
//
// label4
//
this.label4.AutoSize = true;
this.label4.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label4.Location = new System.Drawing.Point(16, 26);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(54, 17);
this.label4.TabIndex = 0;
this.label4.Text = "数据库名";
//
// grpResult
//
this.grpResult.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.grpResult.Controls.Add(this.btnGo);
this.grpResult.Controls.Add(this.label6);
this.grpResult.Controls.Add(this.nudSize);
this.grpResult.Controls.Add(this.cboSort);
this.grpResult.Controls.Add(this.label10);
this.grpResult.Controls.Add(this.txtWhere);
this.grpResult.Controls.Add(this.label9);
this.grpResult.Controls.Add(this.nudIndex);
this.grpResult.Controls.Add(this.btnNext);
this.grpResult.Controls.Add(this.btnPrev);
this.grpResult.Controls.Add(this.dgResult);
this.grpResult.Controls.Add(this.lblState);
this.grpResult.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.grpResult.Location = new System.Drawing.Point(16, 136);
this.grpResult.Name = "grpResult";
this.grpResult.Size = new System.Drawing.Size(576, 344);
this.grpResult.TabIndex = 5;
this.grpResult.TabStop = false;
this.grpResult.Text = "查询结果";
//
// btnGo
//
this.btnGo.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.btnGo.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnGo.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.btnGo.Location = new System.Drawing.Point(400, 306);
this.btnGo.Name = "btnGo";
this.btnGo.Size = new System.Drawing.Size(59, 24);
this.btnGo.TabIndex = 10;
this.btnGo.Text = "跳转(&G)";
this.btnGo.Click += new System.EventHandler(this.btnGo_Click);
//
// label6
//
this.label6.AutoSize = true;
this.label6.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label6.Location = new System.Drawing.Point(16, 28);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(54, 17);
this.label6.TabIndex = 0;
this.label6.Text = "每页显示";
//
// nudSize
//
this.nudSize.Location = new System.Drawing.Point(72, 24);
this.nudSize.Maximum = new System.Decimal(new int[] {
1000,
0,
0,
0});
this.nudSize.Name = "nudSize";
this.nudSize.Size = new System.Drawing.Size(56, 21);
this.nudSize.TabIndex = 1;
this.nudSize.ThousandsSeparator = true;
this.nudSize.Value = new System.Decimal(new int[] {
10,
0,
0,
0});
//
// cboSort
//
this.cboSort.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboSort.Items.AddRange(new object[] {
"升序",
"降序"});
this.cboSort.Location = new System.Drawing.Point(200, 24);
this.cboSort.Name = "cboSort";
this.cboSort.Size = new System.Drawing.Size(64, 20);
this.cboSort.TabIndex = 3;
//
// label10
//
this.label10.AutoSize = true;
this.label10.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label10.Location = new System.Drawing.Point(144, 28);
this.label10.Name = "label10";
this.label10.Size = new System.Drawing.Size(54, 17);
this.label10.TabIndex = 2;
this.label10.Text = "排序方式";
//
// txtWhere
//
this.txtWhere.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.txtWhere.Location = new System.Drawing.Point(336, 28);
this.txtWhere.Name = "txtWhere";
this.txtWhere.Size = new System.Drawing.Size(224, 21);
this.txtWhere.TabIndex = 5;
this.txtWhere.Text = "";
//
// label9
//
this.label9.AutoSize = true;
this.label9.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.label9.Location = new System.Drawing.Point(280, 28);
this.label9.Name = "label9";
this.label9.Size = new System.Drawing.Size(54, 17);
this.label9.TabIndex = 4;
this.label9.Text = "查询条件";
//
// nudIndex
//
this.nudIndex.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.nudIndex.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.nudIndex.Location = new System.Drawing.Point(472, 308);
this.nudIndex.Maximum = new System.Decimal(new int[] {
999999999,
0,
0,
0});
this.nudIndex.Name = "nudIndex";
this.nudIndex.Size = new System.Drawing.Size(88, 21);
this.nudIndex.TabIndex = 11;
this.nudIndex.ThousandsSeparator = true;
this.nudIndex.Value = new System.Decimal(new int[] {
1,
0,
0,
0});
//
// btnNext
//
this.btnNext.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.btnNext.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnNext.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.btnNext.Location = new System.Drawing.Point(341, 306);
this.btnNext.Name = "btnNext";
this.btnNext.Size = new System.Drawing.Size(59, 24);
this.btnNext.TabIndex = 9;
this.btnNext.Text = "下页(&N)";
this.btnNext.Click += new System.EventHandler(this.btnNext_Click);
//
// btnPrev
//
this.btnPrev.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.btnPrev.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnPrev.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.btnPrev.Location = new System.Drawing.Point(282, 306);
this.btnPrev.Name = "btnPrev";
this.btnPrev.Size = new System.Drawing.Size(59, 24);
this.btnPrev.TabIndex = 8;
this.btnPrev.Text = "上页(&P)";
this.btnPrev.Click += new System.EventHandler(this.btnPrev_Click);
//
// dgResult
//
this.dgResult.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dgResult.CaptionVisible = false;
this.dgResult.DataMember = "";
this.dgResult.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.dgResult.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dgResult.Location = new System.Drawing.Point(16, 63);
this.dgResult.Name = "dgResult";
this.dgResult.ReadOnly = true;
this.dgResult.Size = new System.Drawing.Size(544, 233);
this.dgResult.TabIndex = 6;
//
// lblState
//
this.lblState.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.lblState.AutoSize = true;
this.lblState.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.lblState.Location = new System.Drawing.Point(16, 310);
this.lblState.Name = "lblState";
this.lblState.Size = new System.Drawing.Size(215, 17);
this.lblState.TabIndex = 7;
this.lblState.Text = "共 {0} 条记录,第 {0} 页, 共 {0} 页";
//
// btnConnect
//
this.btnConnect.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnConnect.Location = new System.Drawing.Point(504, 24);
this.btnConnect.Name = "btnConnect";
this.btnConnect.Size = new System.Drawing.Size(88, 24);
this.btnConnect.TabIndex = 2;
this.btnConnect.Text = "开始连接(&C)";
this.btnConnect.Click += new System.EventHandler(this.btnConnect_Click);
//
// btnExit
//
this.btnExit.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnExit.Location = new System.Drawing.Point(504, 72);
this.btnExit.Name = "btnExit";
this.btnExit.Size = new System.Drawing.Size(88, 24);
this.btnExit.TabIndex = 4;
this.btnExit.Text = "退出程序(&X)";
this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
//
// btnRead
//
this.btnRead.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnRead.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.btnRead.Location = new System.Drawing.Point(504, 48);
this.btnRead.Name = "btnRead";
this.btnRead.Size = new System.Drawing.Size(88, 24);
this.btnRead.TabIndex = 3;
this.btnRead.Text = "读取数据(&R)";
this.btnRead.Click += new System.EventHandler(this.btnRead_Click);
//
// btnRefresh
//
this.btnRefresh.Location = new System.Drawing.Point(504, 72);
this.btnRefresh.Name = "btnRefresh";
this.btnRefresh.Size = new System.Drawing.Size(88, 24);
this.btnRefresh.TabIndex = 0;
//
// formMain
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(608, 494);
this.Controls.Add(this.btnExit);
this.Controls.Add(this.btnRead);
this.Controls.Add(this.btnConnect);
this.Controls.Add(this.grpResult);
this.Controls.Add(this.grpTblSet);
this.Controls.Add(this.grpConSet);
this.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.Name = "formMain";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "分页测试 v1.0 - hiDotNet 官方";
this.Load += new System.EventHandler(this.formMain_Load);
this.Closed += new System.EventHandler(this.formMain_Closed);
this.grpConSet.ResumeLayout(false);
this.grpTblSet.ResumeLayout(false);
this.grpResult.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.nudSize)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.nudIndex)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.dgResult)).EndInit();
this.ResumeLayout(false);

}
#endregion

/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new formMain());
}

private void formMain_Load(object sender, System.EventArgs e)
{
// 默认按升序
cboSort.SelectedIndex = 0;
}

// 断开连接
private bool Disconnect(SqlConnection conObj)
{
try
{
if (conObj.State != System.Data.ConnectionState.Closed)
conObj.Close();
return true;
}
catch(Exception)
{
return false;
}
}

// 连接 master 数据库
private void btnConnect_Click(object sender, System.EventArgs e)
{
try
{
Disconnect(g_con);
g_con.ConnectionString = "Data Source = " + txtServer.Text.Replace("'", "''") + "; User ID = " + txtUid.Text.Replace("'", "''") + "; Password = " + txtPwd.Text.Replace("'", "''") + "; Database = master";
g_con.Open();

// 获取所有数据库
SqlCommand cmd = new SqlCommand("select [name] from [sysdatabases] order by [name]", g_con);
cmd.CommandType = CommandType.Text;

SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

cboDB.ValueMember = "name";
cboDB.DisplayMember = "name";
cboDB.DataSource = ds.Tables[0];
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

private void formMain_Closed(object sender, System.EventArgs e)
{
Disconnect(g_con);
g_con.Dispose();
}

private void btnExit_Click(object sender, System.EventArgs e)
{
this.Close();
}

private void cboDB_SelectedIndexChanged(object sender, System.EventArgs e)
{
try
{
if (cboDB.SelectedValue.ToString() == "")
return;

g_con.ChangeDatabase(cboDB.SelectedValue.ToString());

// 获取所有表
SqlCommand cmd = new SqlCommand("select [id], [name] from [sysobjects] where [type] = 'u' order by [name]", g_con);
cmd.CommandType = CommandType.Text;

SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

cboTbl.ValueMember = "id";
cboTbl.DisplayMember = "name";
cboTbl.DataSource = ds.Tables[0];
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

private void cboTbl_SelectedIndexChanged(object sender, System.EventArgs e)
{
try
{
if (cboTbl.SelectedValue.ToString() == "")
return;

// 获取所有字段
SqlCommand cmd = new SqlCommand("select [name] from [syscolumns] where [id] = " + cboTbl.SelectedValue.ToString() + " order by [colid]", g_con);
cmd.CommandType = CommandType.Text;

SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

cboField.ValueMember = "name";
cboField.DisplayMember = "name";
cboField.DataSource = ds.Tables[0];

// 初始化当前页
iCurrentPage = 1;
nudIndex.Value = iCurrentPage;

// 获取记录总数
cmd.CommandText = "select [o].[id], [o].[name], [i].[rows] from [sysindexes] [i], [sysobjects] [o] where [i].[first]>0 and [o].[id]=[i].[id] and [o].[type]='u' and [o].[id]=" + cboTbl.SelectedValue.ToString();
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
iRecordCount = (int)dr["rows"];
lblState.Text = "共 " + iRecordCount.ToString() + " 条记录, 第 " + iCurrentPage.ToString() + " 页,共 " + ((iRecordCount / (int)nudSize.Value) + 1) + " 页";
dr.Close();
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

// 获取分页数据
private DataSet GetRecordFromPage(string strTable, string strField, int iPageSize, int iPageIndex, int iOrderType, string strWhere)
{
try
{
SqlCommand cmd = new SqlCommand("GetRecordFromPage", g_con);
cmd.CommandType = CommandType.StoredProcedure;

// 构造参数
SqlParameter pmTable = new SqlParameter("@tblName", SqlDbType.VarChar, 255);
pmTable.Value = strTable;

SqlParameter pmField = new SqlParameter("@fldName", SqlDbType.VarChar, 255);
pmField.Value = strField;

SqlParameter pmSize = new SqlParameter("@PageSize", SqlDbType.Int);
pmSize.Value = iPageSize;

SqlParameter pmIndex = new SqlParameter("@PageIndex", SqlDbType.Int);
pmIndex.Value = iPageIndex;

SqlParameter pmOrderType = new SqlParameter("@OrderType", SqlDbType.Bit);
pmOrderType.Value = iOrderType;

SqlParameter pmWhere = new SqlParameter("@strWhere", SqlDbType.VarChar, 2000);
pmWhere.Value = txtWhere.Text;

// 传递参数
cmd.Parameters.Add(pmTable);
cmd.Parameters.Add(pmField);
cmd.Parameters.Add(pmSize);
cmd.Parameters.Add(pmIndex);
cmd.Parameters.Add(pmOrderType);
cmd.Parameters.Add(pmWhere);

// 获取结果
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

lblState.Text = "共 " + iRecordCount.ToString() + " 条记录, 第 " + iCurrentPage.ToString() + " 页,共 " + ((iRecordCount / (int)nudSize.Value) + 1) + " 页";
return ds;
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
}

private void cboField_SelectedIndexChanged(object sender, System.EventArgs e)
{
}

// 读取默认记录
private void btnRead_Click(object sender, System.EventArgs e)
{
try
{
ReadData(iCurrentPage);
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

// 获取指定页记录
private bool ReadData(int iPage)
{
try
{
if (cboField.SelectedValue.ToString() == "")
return false;

dgResult.DataSource = GetRecordFromPage(cboTbl.Text, cboField.SelectedValue.ToString(), (int)nudSize.Value, iPage, (int)cboSort.SelectedIndex, txtWhere.Text).Tables[0];
return true;
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
}

// 跳转到指定页
private void btnGo_Click(object sender, System.EventArgs e)
{
try
{
iCurrentPage = (int)nudIndex.Value;
ReadData(iCurrentPage);
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

// 获取上一页记录
private void btnPrev_Click(object sender, System.EventArgs e)
{
try
{
if (iCurrentPage > 1)
{
iCurrentPage -= 1;
nudIndex.Value = iCurrentPage;
ReadData(iCurrentPage);
}
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

// 获取下一页记录
private void btnNext_Click(object sender, System.EventArgs e)
{
try
{
if (iCurrentPage < ((iRecordCount / (int)nudSize.Value) + 1))
{
iCurrentPage += 1;
nudIndex.Value = iCurrentPage;
ReadData(iCurrentPage);
}
}
catch (Exception err)
{
MessageBox.Show(this, err.Message, "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}