Repeater自定义分页排序(2)

分页加排序的存储过程:
--得到总记录数 if exists(select 1 from sys.objects where name = 'GetProductsCount' and type = 'P') drop proc GetProductsCount go CREATE PROCEDURE GetProductsCount as select count(*) from products go --分页加排序 if exists(select 1 from sys.objects where name = 'GetProductsByPage' and type = 'P') drop proc GetProductsByPage go CREATE PROCEDURE GetProductsByPage @sortExpression nvarchar(100), @pageNumber int, @pageSize int AS -- 确保指定了 @sortExpression IF LEN(@sortExpression) = 0 SET @sortExpression = 'ProductID' DECLARE @sql nvarchar(4000) set @sql = 'select ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued from (select row_number() Over (order by ' + @sortExpression + ') as row,ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued from products) as ProductsWithRowNumber where row between ' + convert(varchar, (@pageNumber - 1) * @pageSize + 1) + ' and ' + convert(varchar, @pageNumber * @pageSize) exec sp_executesql @sql go --exec GetProductsByPage 'productid desc', 1, 10 --exec GetProductsByPage 'ProductName desc',5, 10 --exec GetProductsByPage '', 1, 10 页面代码
无法忍受如此垃圾的编辑器，页面代码转换的一塌糊涂，所以Repeater标记部分用图片代替 <linkbutton id="lbtnFirst" runat="server" commandname="First" oncommand="lbtnPage_Command">|&lt;</linkbutton><linkbutton id="lbtnPrevious" runat="server" commandname="Previous" oncommand="lbtnPage_Command">&lt;&lt;</linkbutton><linkbutton id="lbtnNext" runat="server" commandname="Next" oncommand="lbtnPage_Command">&gt;&gt;</linkbutton><linkbutton id="lbtnLast" runat="server" commandname="Last" oncommand="lbtnPage_Command">&gt;|</linkbutton> 转到第<dropdownlist id="dropPage" runat="server" autopostback="True" onselectedindexchanged="dropPage_SelectedIndexChanged"></dropdownlist>页
后台代码如下:
using System; using System.Collections; using System.Configuration; using System.Data; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Data.SqlClient; public partial class RepeaterPagingSorting : System.Web.UI.Page { //每页显示的最多记录的条数 private int pageSize = 10; //当前页号 private int currentPageNumber; //排序表达式 private string sortExpression = string.Empty; //排序方向 private string sortDirection = string.Empty; //显示数据的总条数 private static int rowCount; //总页数 private static int pageCount; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { SqlConnection cn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString); SqlCommand cmd = new SqlCommand("GetProductsCount", cn); cmd.CommandType = CommandType.StoredProcedure; cn.Open(); rowCount = (int)cmd.ExecuteScalar(); cn.Close(); pageCount = (rowCount - 1) / pageSize + 1; currentPageNumber = 1; for (int i = 1; i <= pageCount; i++) { dropPage.Items.Add(new ListItem(i.ToString(), i.ToString())); } dropPage.SelectedValue = dropPage.Items.FindByValue(currentPageNumber.ToString()).Value; Query(); } sortExpression = ViewState["sortExpression"].ToString(); sortDirection = ViewState["sortDirection"].ToString(); currentPageNumber = Convert.ToInt32(ViewState["currentPageNumber"]); } private void Query() { SetButton(currentPageNumber); SqlConnection cn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString); SqlCommand cmd = new SqlCommand("GetProductsByPage", cn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@sortExpression", sortExpression + " " + sortDirection); cmd.Parameters.AddWithValue("@pageNumber", currentPageNumber); cmd.Parameters.AddWithValue("@pageSize", pageSize); cn.Open(); rptProducts.DataSource = cmd.ExecuteReader(); rptProducts.DataBind(); cn.Close(); lblMessage.Text = "共找到" + rowCount + "条记录, 当前第" + currentPageNumber + "/" + pageCount + "页"; Save(); } protected void lbtnPage_Command(object sender, CommandEventArgs e) { switch (e.CommandName) { case "First": currentPageNumber = 1; break; case "Previous": currentPageNumber = (int)ViewState["currentPageNumber"] - 1 > 1 ? (int)ViewState["currentPageNumber"] - 1 : 1; break; case "Next": currentPageNumber = (int)ViewState["currentPageNumber"] + 1 < pageCount ? (int)ViewState["currentPageNumber"] + 1 : pageCount; break; case "Last": currentPageNumber = pageCount; break; } dropPage.SelectedValue = dropPage.Items.FindByValue(currentPageNumber.ToString()).Value; Query(); } protected void lbtnSort_Command(object sender, CommandEventArgs e) { if (e.CommandName != ViewState["sortExpression"].ToString()) { sortDirection = "ASC"; } else { if (sortDirection == "ASC") { sortDirection = "DESC"; } else if (sortDirection == "DESC" || sortDirection == string.Empty) { sortDirection = "ASC"; } } sortExpression = e.CommandName ; Query(); } protected void dropPage_SelectedIndexChanged(object sender, EventArgs e) { currentPageNumber = int.Parse(dropPage.SelectedValue); Query(); } private void SetButton(int currentPageNumber) { lbtnFirst.Enabled = currentPageNumber != 1; lbtnPrevious.Enabled = currentPageNumber != 1; lbtnNext.Enabled = currentPageNumber != pageCount; lbtnLast.Enabled = currentPageNumber != pageCount; } private void Save() { ViewState["currentPageNumber"] = currentPageNumber; ViewState["sortExpression"] = sortExpression; ViewState["sortDirection"] = sortDirection; } protected void rptProducts_ItemCreated(object sender, RepeaterItemEventArgs e) { if (e.Item.ItemType == ListItemType.Header) { if (!string.IsNullOrEmpty(sortDirection)) { Label lblSort = new Label(); lblSort.EnableTheming = false; lblSort.Font.Name = "webdings"; lblSort.Font.Size = FontUnit.Small; lblSort.Text = sortDirection == "ASC" ? "5" : "6"; (e.Item.FindControl("td" + sortExpression) as HtmlTableCell).Controls.Add(lblSort); } } } } 分页排序效果图: