复制代码 代码如下:
namespace Alex
{
public class PageTools
{
///
/// 表名称
///
private string tableName;
public string TableName
{
get { return tableName; }
set { tableName = value; }
}
///
/// 返回的列名
///
private string returnColumns;
public string ReturnColumns
{
get { return returnColumns; }
set { returnColumns = value; }
}
///
/// 条件
///
private string where;
public string Where
{
get { return where; }
set { where = value; }
}
///
/// 排序列
///
private string orderColumnName;
public string OrderColumnName
{
get { return orderColumnName; }
set { orderColumnName = value; }
}
///
/// 排序，true为降序
///
private Boolean orderDesc;
public Boolean OrderDesc
{
get { return orderDesc; }
set { orderDesc = value; }
}
///
/// 主键
///
private string keyColumnName;
public string KeyColumnName
{
get { return keyColumnName; }
set { keyColumnName = value; }
}
///
/// 页面大小
///
private Int32 pageSize;
public Int32 PageSize
{
get { return pageSize; }
set { pageSize = value; }
}
///
/// 第几页
///
private Int32 pageIndex;
public Int32 PageIndex
{
get { return pageIndex; }
set { pageIndex = value; }
}
///
/// SQL参数
///
private SqlParameter[] whereParams;
public SqlParameter[] WhereParams
{
get { return whereParams; }
set { whereParams = value; }
}
///
///
/// 条件
/// 排序列
/// 排序，true为降序
/// 主键
/// 页面大小
/// 第几页
/// SQL参数
public PageTools(string tableName, string returnColumns, string where, string orderColumnName, Boolean orderDesc,
string keyColumnName, Int32 pageSize, Int32 pageIndex, params SqlParameter[] whereParams)
{
this.TableName = tableName;
this.ReturnColumns = returnColumns;
this.Where = where;
this.OrderColumnName = orderColumnName;
this.OrderDesc = orderDesc;
this.KeyColumnName = keyColumnName;
this.PageSize = pageSize;
this.PageIndex = pageIndex;
this.WhereParams = WhereParams;
}
public PageTools() { }
public DataTable RetrievePagerData()
{
if (pageIndex == 1)
{
return RetrieveTopData();
}
else
{
string sql = string.Format("select top {0} {1} from {2} where {3} and {6} not in ( select top {7} {6} from {2} where {3} order by {4} {5} ) order by {4} {5}", pageSize, returnColumns, tableName, where, orderColumnName, orderDesc == true ? "desc" : string.Empty, keyColumnName, pageSize * (pageIndex - 1));
return DbHelperSQL.Query(sql, CheckNull(whereParams)).Tables[0];
}
}
///
/// 获取数据的条数
///
///
///
///
///
public Int32 RetrieveDataCount()
{
string sql = string.Format("select count(*) from {0} where {1}" , tableName, where);
Int32 result = (Int32)DbHelperSQL.GetSingle(sql, CheckNull(whereParams));
return result;
}
///
/// 获取第一页
///
///
///
///
///
///
///
///
///
public DataTable RetrieveTopData()
{
string sql = string.Format("select top {0} {1} from {2} where {3} order by {4} {5}", pageSize, returnColumns, tableName, where, orderColumnName, orderDesc == true ? "desc" : string.Empty);
return DbHelperSQL.Query(sql, whereParams).Tables[0];
}
///
/// 移除空参数
///
///
///
private SqlParameter[] CheckNull(SqlParameter[] paras)
{
if (paras == null)
{
return null;
}
List
foreach (SqlParameter para in paras)
{
if (para != null) list.Add(para);
}
return list.ToArray();
}
}
}
页面后台：
复制代码 代码如下:
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
recordCount = page.RetrieveDataCount();
totalPages = (int)(Math.Ceiling((double)recordCount / (double)page.PageSize));
if (!IsPostBack)
{
BindData();
}
}
Alex.PageTools page = new Alex.PageTools("Test", "*", "1=1", "USER_Account", false, "USER_Account", 10, 1, null);
int recordCount;
public int totalPages;
private void BindData()
{
int pageIndex = SmartGridView1.PageIndex;
if(totalPages>0)
{
if(pageIndex>totalPages-1)
{
pageIndex=totalPages-1;
}
}
else
{
pageIndex=0;
}
SmartGridView1.PageIndex=pageIndex;
page.PageIndex=pageIndex+1;
SmartGridView1.DataSource = page.RetrievePagerData();
SmartGridView1.DataBind();
if (this.SmartGridView1.PageIndex == 0)
{
this.btnFirst.Enabled = false;
this.btnPrev.Enabled = false;
if (totalPages == 1)
{
this.btnLast.Enabled = false;
this.btnNext.Enabled = false;
}
}
else if (this.SmartGridView1.PageIndex == totalPages - 1)
{
this.btnLast.Enabled = false;
this.btnNext.Enabled = false;
}
this.lblpagesum.Text = totalPages.ToString();
this.lblpage.Text = (pageIndex + 1).ToString();
this.lblrowscount.Text = recordCount.ToString();
}
public void NavigateToPage(object sender, CommandEventArgs e)
{
btnFirst.Enabled = true;
btnPrev.Enabled = true;
btnNext.Enabled = true;
btnLast.Enabled = true;
string pageinfo = e.CommandArgument.ToString();
switch (pageinfo)
{
case "Prev":
if (this.SmartGridView1.PageIndex > 0)
{
this.SmartGridView1.PageIndex -= 1;
}
break;
case "Next":
if (this.SmartGridView1.PageIndex < (totalPages - 1))
{
this.SmartGridView1.PageIndex += 1;
}
break;
case "First":
this.SmartGridView1.PageIndex = 0;
break;
case "Last":
this.SmartGridView1.PageIndex = totalPages - 1;
break;
}
if (this.SmartGridView1.PageIndex == 0)
{
btnFirst.Enabled = false;
btnPrev.Enabled = false;
if (totalPages == 1)
{
btnLast.Enabled = false;
btnNext.Enabled = false;
}
}
else if (this.SmartGridView1.PageIndex == totalPages - 1)
{
btnLast.Enabled = false;
btnNext.Enabled = false;
}
BindData();
}
protected void gobtnClick(object sender, EventArgs e)
{
int goPageIndex = Convert.ToInt32(this.goCount.Text.Trim());
if (goPageIndex > 0)
{
if (goPageIndex >= totalPages)
{
this.SmartGridView1.PageIndex = totalPages - 1;
}
else
{
this.SmartGridView1.PageIndex = goPageIndex - 1;
}
}
else if(goPageIndex <=0)
{
this.SmartGridView1.PageIndex = 0;
}
if (this.SmartGridView1.PageIndex == 0)
{
btnFirst.Enabled = false;
btnPrev.Enabled = false;
btnLast.Enabled = true;
btnNext.Enabled = true;
if (totalPages == 1)
{
btnLast.Enabled = false;
btnNext.Enabled = false;
}
}
else if (this.SmartGridView1.PageIndex == totalPages - 1)
{
btnLast.Enabled = false;
btnNext.Enabled = false;
btnFirst.Enabled = true;
btnPrev.Enabled = true;
}
else
{
btnLast.Enabled = true;
btnFirst.Enabled = true;
btnNext.Enabled = true;
btnPrev.Enabled = true;
}
BindData();
}
页面前台：
代码
复制代码 代码如下:
<%@ Page Language="C#" Theme="msn_blue" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="SmartGridView" Namespace="BOSSWWebUI.SmartGridView" TagPrefix="uc1" %>
