分页控件及存储过程-阿里云开发者社区

分页控件及存储过程

2011-10-30 789

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<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    
    <div>
        <table style="border:1px soild #336699;">
            <thead>
                <tr>
                    <th>项目编号</th>
                    <th>项目名称</th>
                    <th>发布时间</th>
                </tr>
            </thead>
            <tbody>
                <asp:Repeater ID="Repeater1" runat="server">
                  <ItemTemplate>
                    <tr>
                        <td><%# Eval("ItemId") %></td>
                        <td><%# Eval("ItemName") %></td>
                        <td><%# Eval("Time") %></td>
                    </tr>
                  </ItemTemplate>
                  <AlternatingItemTemplate>
                    <tr>
                        <td><%# Eval("ItemId") %></td>
                        <td><%# Eval("ItemName") %></td>
                        <td><%# Eval("Time") %></td>
                    </tr>
                  </AlternatingItemTemplate>
                </asp:Repeater>
            </tbody>
        </table>
        <br />
        <webdiyer:AspNetPager ID="AspNetPager1" runat="server" FirstPageText="首页" LastPageText="尾页"
            NextPageText="下一页" PrevPageText="上一页" AlwaysShow="True" OnPageChanging="AspNetPager1_PageChanging">
        </webdiyer:AspNetPager>   
         </div>
    </form>
</body>
</html>



protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bindRepeater1();
        }
    }

    public void bindRepeater1()
    {
        int count = 0;
        DataTable tb = this.getDatable(this.AspNetPager1.CurrentPageIndex, this.AspNetPager1.PageSize, string.Empty,ref count);
        this.Repeater1.DataSource = tb;
        this.Repeater1.DataBind();
        this.AspNetPager1.RecordCount = count;
    }

    public DataTable getDatable(int pageIndex,int pageSize,string filter,ref int Count)
    {
        SqlParameter p = new SqlParameter("@rowCount",SqlDbType.Int);
        p.Direction = ParameterDirection.Output;
        SqlParameter[] param = new SqlParameter[] 
        {
            new SqlParameter("@tblName","Items"),
            new SqlParameter("@strGetFields","ItemId,ItemName,Time"),
            new SqlParameter("@fldName","ItemId"),
            new SqlParameter("@PageSize",pageSize),
            new SqlParameter("@PageIndex",pageIndex),
            new SqlParameter("@OrderType","asc"),
            new SqlParameter("@strWhere",filter),
            p
        };
        DataTable tb = DBHelper.GetTable("pagination", CommandType.StoredProcedure, param);

        Count = Convert.ToInt32(p.Value.ToString());
        return tb;
    }
    protected void AspNetPager1_PageChanging(object src, Wuqi.Webdiyer.PageChangingEventArgs e)
    {
        this.AspNetPager1.CurrentPageIndex = e.NewPageIndex;
        bindRepeater1();
    }

存储过程的代码如下：

create PROCEDURE [dbo].[pagination]
@tblName varchar(255), -- 表名 
@strGetFields varchar(1000), -- 需要返回的列 
@fldName varchar(255), -- 排序的字段名 
@PageSize int, -- 页尺寸 
@PageIndex int, -- 页码 
@OrderType varchar(4), -- 设置排序类型, 非 0 值则降序 
@strWhere varchar(1500), -- 查询条件 (注意: 不要加 where) 
@rowCount int output --查询到的记录数 
AS 

declare @strSQL varchar(5000) -- 主语句 
declare @strTmp varchar(110) -- 临时变量 
declare @strOrder varchar(400) -- 排序类型 
declare @strCountTmp nvarchar(100) --记录数 
declare @timediff datetime --耗时 

begin 
select @timediff = Getdate() 
if @strWhere !='' 
set @strCountTmp = 'select @rowCount = count(*) from [' + @tblName + '] where '+@strWhere 
else 
set @strCountTmp = 'select @rowCount = count(*) from [' + @tblName + ']' 

exec sp_executesql @strCountTmp,N'@rowCount int out',@rowCount out --输出总记录数 

if @OrderType != 'asc' 
begin 
set @strTmp = '<(select min' 
set @strOrder = ' order by ' + @fldName +' desc' 
--如果@OrderType不是0，就执行降序，这句很重要！ 
end 

else 
begin 
set @strTmp = '>(select max' 
set @strOrder = ' order by ' + @fldName +' asc' 
end 
if @PageIndex = 1 
begin 
if @strWhere != '' 
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName + '] where ' + @strWhere + ' ' + @strOrder 
else 
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName + '] '+ @strOrder 
--如果是第一页就执行以上代码，这样会加快执行速度 
end 

else 
begin 
--以下代码赋予了@strSQL以真正执行的SQL代码 
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' 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) +' '+@strGetFields+ ' from [' 
+ @tblName + '] where [' + @fldName + ']' + @strTmp + '([' 
+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' 
+ @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' ' 
+ @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder 
end 

end 
exec (@strSQL) 
select datediff(ms,@timediff,GetDate()) as runtime