WinForm DataGridView分页功能

WinForm 里面的DataGridView不像WebForm里面的GridView那样有自带的分页功能，需要自己写代码来实现分页，效果如下图： 分页控件 

.CS:

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.Data.SqlClient;
 10
 11 namespace allenPageTest
 12 {
 13     public partial class Form2 : Form
 14     {
 15         public Form2()
 16         {
 17             InitializeComponent();
 18         }
 19
 20         private void Form2_Load(object sender, EventArgs e)
 21         {
 22             BindDataWithPage(1);
 23         }
 24
 25         //总记录数
 26         public int RecordCount = 0;
 27         private string strConn = @"server=.;database=test;uid=sa;pwd=1234";
 28         private string strProcedure = "PageTest ";
 29
 30
 31         /// <summary>
 32         /// 绑定第Index页的数据
 33         /// </summary>
 34         /// <param name="Index"></param>
 35         private void BindDataWithPage(int Index)
 36         {
 37             allenPage1.PageIndex = Index;
 38             //winFormPager1.PageSize = 10;
 39             DataTable dt = GetData(strConn, strProcedure, Index, allenPage1.PageSize);
 40
 41             dataGridView1.DataSource = dt;
 42
 43             //获取并设置总记录数
 44             allenPage1.RecordCount = RecordCount;
 45         }
 46
 47
 48         /// <summary>
 49         /// 获取数据源
 50         /// </summary>
 51         /// <param name="conn">连接对象</param>
 52         /// <param name="strProcedure">存储过程名称</param>
 53         /// <param name="pageIndex">页码</param>
 54         /// <param name="pageSize">每一页显示的行数</param>
 55         /// <returns></returns>
 56         private DataTable GetData(string conn, string strProcedure, int pageIndex, int pageSize)
 57         {
 58
 59             using (SqlConnection connection = new SqlConnection(conn))
 60             {
 61                 SqlCommand command = new SqlCommand(strProcedure, connection);
 62                 command.CommandType = CommandType.StoredProcedure;//采用存储过程
 63                 command.Parameters.Add("@Table", SqlDbType.NVarChar, 1000).Value = "TableName";//对应的数据表名
 64                 command.Parameters.Add("@TIndex", SqlDbType.NVarChar, 100).Value = "Index";//主键ID
 65                 command.Parameters.Add("@Column", SqlDbType.NVarChar, 2000).Value = "*";//要查询的字段，*为全部字段
 66                 command.Parameters.Add("@Sql", SqlDbType.NVarChar, 3000).Value = " 1=1 ";//查询条件
 67                 command.Parameters.Add("@PageIndex", SqlDbType.Int, 8).Value = pageIndex.ToString();//当前页码
 68                 command.Parameters.Add("@PageSize", SqlDbType.Int, 8).Value = pageSize.ToString();//每一页显示的行数
 69                 command.Parameters.Add("@Sort", SqlDbType.NVarChar, 200).Value = " Column Name asc";//排序的字段
 70                 //打开连接
 71                 if (connection.State != ConnectionState.Open)
 72                 {
 73                     connection.Open();
 74                 }
 75                 try
 76                 {
 77                     //填充数据
 78                     SqlDataAdapter da = new SqlDataAdapter(command);
 79                     DataSet ds = new DataSet();
 80                     da.Fill(ds);
 81                     //获取总记录数
 82                     RecordCount = Convert.ToInt32(ds.Tables[1].Rows[0][0]);
 83                     //返回数据集
 84                     return ds.Tables[0];
 85
 86                 }
 87                 catch (SqlException err)
 88                 {
 89                     MessageBox.Show(err.Message);
 90                     return null; ;
 91                 }
 92                 finally
 93                 {
 94                     connection.Close();
 95                 }
 96             }
 97         }
 98
 99         private void allenPage1_PageIndexChanged(object sender, EventArgs e)
100         {
101             BindDataWithPage(allenPage1.PageIndex);
102         }
103     }
104 }

存储过程：

 1 IF EXISTS(SELECT * FROM SYSOBJECTS WHERE NAME='PageTest')
 2 DROP PROC PageTest
 3 GO
 4 CREATE PROCEDURE [dbo].[PageTest]
 5     @Table VARCHAR(1000), --表名,多表是请使用 tA a inner join tB b On a.AID = b.AID
 6     @TIndex NVARCHAR(100),    --主键
 7     @Column NVARCHAR(2000) = '*',--要查询的字段，全部字段就为*
 8     @Sql NVARCHAR(3000) = '',--Where条件
 9     @PageIndex INT = 1,    --开始页码
10     @PageSize INT = 10,        --每页查询数据的行数
11     @Sort NVARCHAR(200) = '' --排序的字段
12
13 AS
14
15
16
17 DECLARE @strWhere VARCHAR(2000)
18 DECLARE @strsql NVARCHAR(3900)
19 IF @Sql IS NOT NULL AND len(LTRIM(RTRIM(@Sql)))>0
20   BEGIN
21    SET @strWhere = ' WHERE ' + @Sql + ' '
22   END
23 ELSE
24   BEGIN
25    SET @strWhere = ''
26   END
27
28 IF (charindex(LTRIM(RTRIM(@TIndex)),@Sort)=0)
29 BEGIN
30     IF(@Sort='')
31         SET @Sort = @TIndex + ' DESC '
32     ELSE
33         SET @Sort = @Sort+ ' , '+@TIndex + ' DESC '
34 END
35 IF @PageIndex < 1
36   SET @PageIndex = 1
37
38         IF @PageIndex = 1
39         BEGIN
40           SET @strsql = 'SELECT TOP ' + str(@PageSize) +' '+@Column+ '  FROM ' + @Table + ' ' + @strWhere + ' ORDER BY  '+ @Sort
41         END
42         ELSE
43           BEGIN
44
45             DECLARE @START_ID NVARCHAR(50)
46             DECLARE @END_ID NVARCHAR(50)
47             SET @START_ID = convert(NVARCHAR(50),(@PageIndex - 1) * @PageSize + 1)
48             SET @END_ID = convert(NVARCHAR(50),@PageIndex * @PageSize)
49             SET @strsql =  ' SELECT '+@Column+ '
50            FROM (SELECT ROW_NUMBER() OVER(ORDER BY '+@Sort+') AS RowNum,
51              '+@Column+ '
52               FROM '+@Table +' WITH(NOLOCK) ' + @strWhere +') AS D
53            WHERE RowNum BETWEEN '+@START_ID+' AND ' +@END_ID +' ORDER BY '+@Sort
54           END
55 EXEC(@strsql)
56 PRINT @strsql
57     SET @strsql = 'SELECT  Count(1) as TotalRecords FROM ' + @Table +' WITH(NOLOCK) ' + @strWhere
58 PRINT @strsql
59 EXEC(@strsql)

还有一种存储过程写法，仅供参考：

 1 CREATE PROCEDURE pro_DataPageRowNumber
 2 @SQL nvarchar(2000),--主句
 3 @Order nvarchar(20),--排序
 4 @PageIndex int,--当前页
 5 @PageSize int,--每页显示数
 6 @TotalRow int output--记录总数
 7 AS
 8     SET NOCOUNT ON;
 9     declare @ExceSQL nvarchar(4000)--主句
10     declare @startRow as int--开始行
11     set @startRow=(@PageIndex-1)*@PageSize+1
12     declare @lastRow int--结束行
13     set @lastRow=@PageSize*@PageIndex
14     declare @RowNumber nvarchar(100)
15     set @RowNumber=',Row_NUMBER() OVER(ORDER BY '+@Order+') as RowNumber from '
16     set @SQL=Replace(@SQL,' from ',@RowNumber)
17     set @ExceSQL='select @TotalRow=max(RowNumber) from ('+@SQL+') as tmp'
18     execute  sp_executesql @ExceSQl,N'@TotalRow in output',@TotalRow output
19     set @ExceSQL='select * from('+@SQL+') as tmp where RowNumber  between'+ Convert(nvarchar,@startRow)
20     +' and '+Convert(nvarchar,@lastRow)
21     execute(@ExceSQL)
22
23 GO

分页的控件是自己写的一个用户控件，生成之后是一个DLL文件，直接引用在项目里面即可，有需要的可以留下邮箱。