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Repeater自定义分页 + 排序 + 全选删除(3)(转)

2009-04-21 16:49 316 查看
页面代码:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RepeaterPagingSortingDelete.aspx.cs" Inherits="RepeaterPagingSortingDelete" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title>RepeaterPagingSortingDelete</title>

<script language="javascript" type="text/javascript">

function chooseAll(sender)

{

var inputs = document.all.tags("INPUT");

// 遍历页面上所有的 input

for (var i = 0; i < inputs.length; i++)

{

//如果此input元素的类型为checkbox,并且其id中包含chkSelect

if (inputs[i].type == "checkbox" && inputs[i].id.indexOf("chkSelect") >= 0)

{

//设置此复选框的checked与全选复选框相同

inputs[i].checked = document.getElementById(sender).checked;

inputs[i].onclick();

}

}

}

function highLightSelected(chkSelect)

{

if (chkSelect.checked)

chkSelect.parentElement.parentElement.style.backgroundColor='#CCCCFF';

else

chkSelect.parentElement.parentElement.style.backgroundColor='white';

}

</script>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:LinkButton id="lbtnFirst" runat="server" CommandName="First" OnCommand="lbtnPage_Command">|<</asp:LinkButton>

<asp:LinkButton id="lbtnPrevious" runat="server" CommandName="Previous" OnCommand="lbtnPage_Command"><<</asp:LinkButton>

<asp:Label id="lblMessage" runat="server" />

<asp:LinkButton id="lbtnNext" runat="server" CommandName="Next" OnCommand="lbtnPage_Command">>></asp:LinkButton>

<asp:LinkButton id="lbtnLast" runat="server" CommandName="Last" OnCommand="lbtnPage_Command">>|</asp:LinkButton>

转到第<asp:DropDownList ID="dropPage" runat="server" AutoPostBack="True" OnSelectedIndexChanged="dropPage_SelectedIndexChanged"></asp:DropDownList>页

<asp:Repeater ID="rptProducts" runat="server"

onitemcreated="rptProducts_ItemCreated"

onitemdatabound="rptProducts_ItemDataBound">

<HeaderTemplate>

<table border="1">

<tr>

<td id="tdAll" runat="server"><asp:CheckBox ID="chkAll" runat="server" /></td>

<td id="tdProductID" runat="server"><asp:LinkButton ID="lbtnProductID" runat="server" Text="ProductID" CommandName="ProductID" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblHeadProductID" runat="server" Visible="false"></asp:Label></td>

<td id="tdProductName" runat="server"><asp:LinkButton ID="lbtnProductName" runat="server" Text="ProductName" CommandName="ProductName" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblProductName" runat="server" Visible="false"></asp:Label></td>

<td id="tdSupplierID" runat="server"><asp:LinkButton ID="lbtnSupplierID" runat="server" Text="SupplierID" CommandName="SupplierID" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblSupplierID" runat="server" Visible="false"></asp:Label></td>

<td id="tdCategoryID" runat="server"><asp:LinkButton ID="lbtnCategoryID" runat="server" Text="CategoryID" CommandName="CategoryID" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblCategoryID" runat="server" Visible="false"></asp:Label></td>

<td id="tdQuantityPerUnit" runat="server"><asp:LinkButton ID="lbtnQuantityPerUnit" runat="server" Text="QuantityPerUnit" CommandName="QuantityPerUnit" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblQuantityPerUnit" runat="server" Visible="false"></asp:Label></td>

<td id="tdUnitPrice" runat="server"><asp:LinkButton ID="lbtnUnitPrice" runat="server" Text="UnitPrice" CommandName="UnitPrice" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblUnitPrice" runat="server" Visible="false"></asp:Label></td>

<td id="tdUnitsInStock" runat="server"><asp:LinkButton ID="lbtnUnitsInStock" runat="server" Text="UnitsInStock" CommandName="UnitsInStock" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblUnitsInStock" runat="server" Visible="false"></asp:Label></td>

<td id="tdUnitsOnOrder" runat="server"><asp:LinkButton ID="lbtnUnitsOnOrder" runat="server" Text="UnitsOnOrder" CommandName="UnitsOnOrder" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblUnitsOnOrder" runat="server" Visible="false"></asp:Label></td>

<td id="tdReorderLevel" runat="server"><asp:LinkButton ID="lbtnReorderLevel" runat="server" Text="ReorderLevel" CommandName="ReorderLevel" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblReorderLevel" runat="server" Visible="false"></asp:Label></td>

<td id="tdDiscontinued" runat="server"><asp:LinkButton ID="lbtnDiscontinued" runat="server" Text="Discontinued" CommandName="Discontinued" OnCommand="lbtnSort_Command"></asp:LinkButton><asp:Label ID="lblDiscontinued" runat="server" Visible="false"></asp:Label></td>

</tr>

</HeaderTemplate>

<ItemTemplate>

<tr>

<td id="tdSelect" runat="server"><asp:CheckBox ID="chkSelect" runat="server" /></td>

<td><asp:Label ID="lblProductID" runat="server" Text='<%# Eval("ProductID") %>'></asp:Label></td>

<td><asp:Label ID="lblProductName" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label></td>

<td><asp:Label ID="lblSupplierID" runat="server" Text='<%# Eval("SupplierID") %>'></asp:Label></td>

<td><asp:Label ID="lblCategoryID" runat="server" Text='<%# Eval("CategoryID") %>'></asp:Label></td>

<td><asp:Label ID="lblQuantityPerUnit" runat="server" Text='<%# Eval("QuantityPerUnit") %>'></asp:Label></td>

<td><asp:Label ID="lblUnitPrice" runat="server" Text='<%# Eval("UnitPrice") %>'></asp:Label></td>

<td><asp:Label ID="lblUnitsInStock" runat="server" Text='<%# Eval("UnitsInStock") %>'></asp:Label></td>

<td><asp:Label ID="lblUnitsOnOrder" runat="server" Text='<%# Eval("UnitsOnOrder") %>'></asp:Label></td>

<td><asp:Label ID="lblReorderLevel" runat="server" Text='<%# Eval("ReorderLevel") %>'></asp:Label></td>

<td><asp:CheckBox ID="chkDiscontinued" runat="server" Checked='<%# Eval("Discontinued") %>' Enabled="false" /></td>

</tr>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:Repeater>

<asp:Button ID="btnDelete" runat="server" Text="删除" onclick="btnDelete_Click" />

</div>

</form>

</body>

</html>

后台代码:

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

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.Xml.Linq;

using System.Data.SqlClient;

public partial class RepeaterPagingSortingDelete : 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);

}

}

}

protected void btnDelete_Click(object sender, EventArgs e)

{

CheckBox chkSelect;

Label lblProductID;

foreach (RepeaterItem item in rptProducts.Items)

{

chkSelect = item.FindControl("chkSelect") as CheckBox;

if (chkSelect != null && chkSelect.Checked)

{

lblProductID = item.FindControl("lblProductID") as Label;

//Response.Write(lblProductID.Text);

//可以在这里完成删除逻辑

}

}

}

protected void rptProducts_ItemDataBound(object sender, RepeaterItemEventArgs e)

{

if (e.Item.ItemType == ListItemType.Header)

{

CheckBox chkAll = e.Item.FindControl("chkAll") as CheckBox;

chkAll.Attributes.Add("onclick", "chooseAll('" + chkAll.ClientID + "')");

}

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

{

CheckBox chkSelect = e.Item.FindControl("chkSelect") as CheckBox;

chkSelect.Attributes.Add("onclick", "highLightSelected(this);");

}

}

}
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