ASP.NET常用服務器控件方法及屬性

發表日期：2015-09-26 文章編輯：南昌開優網絡瀏覽次數：4270 標簽：ASP.NET應用

//控件DorpDownList

ddltitle.DataSource=new Xiaobin.Shop.DAL.HelpDAL().GetList(""); //指定數據源

ddltitle.DataTextField="title"; //顯示的文本

ddltitle.DataValueField="id"; //選擇的字段

ddltitle.DataBind(); //綁定

ddltitle.Items.Add(new ListItem("選擇類別", "0")); //在數據源最后加上一項

ddltitle.Items.Insert(0,new ListItem("選擇類別", "0")); //在指定的位置加上一項

//綁定DataSet數據

string title=Request.QueryString["title"];

if(string.IsNullOrEmpty(title))

{

title="關于我們";

}

litH1.Text=title;

title=xiaobin.Utility.Tool.GetSafeSQL(title);

DataSet ds=new DAL.HelpDAL().GetList("title='"+title+"'"); //綁定DataSet

if(ds.Tables.Count>0&&ds.Table[0].Rows.Count>0) //如果表的數量和第一個表的行數大于0

{

litbody.Text=ds.Table[0].Rows[0]["body"].ToString(); //取出第一個表的第一行的數據

}

//Repeater的內循環事件

外循環

private void BindRep()

{

rep.DataSource = dao.GetList("*", "createdate", "asc", anp.PageSize, anp.CurrentPageIndex, GetCond());

rep.DataBind();

}

內循環雙擊事件中的ItemDataBound 如顯示樓層方法

int x = 0;

protected void rep_ItemDataBound(object sender, RepeaterItemEventArgs e)

{

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

{

Panel pan = e.Item.FindControl("pan") as Panel; //FindControl 嘗試轉換及rep控件的服務器控件

Literal litx = e.Item.FindControl("litx") as Literal;

Literal litreply = e.Item.FindControl("litreply") as Literal;

if (litreply.Text.Trim().Length == 0)

{

pan.Visible = false;

}

else

{

pan.Visible = true;

}

litx.Text = (anp.StartRecordIndex + x).ToString(); //StartRecordIndex 為anp控件中的當前索引升序排序

litx.Text=(anp.RecordCount - (anp. StartRecordIndex + x).Tostring()); //降序排序

x++;

}

//Repeater控件的嵌套使用

//綁定頂級分類

repca1.DataSource = new DAL.CategoryDAL().GetListArray("pid=0");

repca1.DataBind();

//循環repca1

protected void repca1_ItemDataBound(object sender, RepeaterItemEventArgs e)

{

//ListItemType.Item 奇數行 ListItemType.AlternatingItem 偶數行

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

{

Repeater repca2 = e.Item.FindControl("repca2") as Repeater;

//在rep1中加上隱藏域用于綁定rep2即 value='<%#Eval("id")>'

HiddenField hfid1 = e.Item.FindControl("hfid1") as HiddenField;

Repeater repca3 = e.Item.FindControl("repca3") as Repeater;

repca2.DataSource = new DAL.CategoryDAL().GetListArray("pid=" + hfid1.Value);

repca2.DataBind();

}

//循環repca2

protected void repca2_ItemDataBound(object sender, RepeaterItemEventArgs e)

{

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

{

Repeater repca3 = e.Item.FindControl("repca3") as Repeater;

HiddenField hfid2 = e.Item.FindControl("hfid2") as HiddenField;

repca3.DataSource = new DAL.CategoryDAL().GetListArray("pid=" + hfid2.Value);

repca3.DataBind();

}

//Repeater控件的分割屬性

SeparatorTemplate

//通過Model獲取RadioButtonList、DropDownList選中的值

ListItem li = rademail.Items.FindByValue(model.isopenemail.ToString()); //

if (li != null)

{

li.Selected = true; //列表項等于model中的字段值時為真及顯示選中的字段

}

li = radsex.Items.FindByValue(model.sex.ToString());

if (li != null)

{

li.Selected = true;

}

li = ddlprovince.Items.FindByValue(model.province);

ddlprovince.ClearSelection(); //清空dll再重新獲取

if (li != null)

{

li.Selected = true;

}

li = ddlcity.Items.FindByValue(model.city);

ddlcity.ClearSelection();

if (li != null)

{

li.Selected = true;

}

//DropDownList的條件綁定

選擇查看方式：

<asp:DropDownList ID="ddlorder" runat="server" AutoPostBack="True" OnSelectedIndexChanged="ddlorder_SelectedIndexChanged">

<asp:ListItem Text="↓按上架時間降序排列" Value="0"></asp:ListItem>

<asp:ListItem Text="↑按上架時間升序排列" Value="1"></asp:ListItem>

<asp:ListItem Text="↓按會員價降序排列" Value="2"></asp:ListItem>

<asp:ListItem Text="↑按會員價升序排列" Value="3"></asp:ListItem>

</asp:DropDownList>

//綁定列表

private void BindRep()

{

string order = "createdate";

string ordertype = "desc";

switch (ddlorder.SelectedValue)

{

case "0":

order = "createdate";

ordertype = "desc";

break;

case "1":

order = "createdate";

ordertype = "asc";

break;

case "2":

order = "memberprice";

ordertype = "desc";

break;

case "3":

order = "memberprice";

ordertype = "asc";

break;

default:

break;

}

rep.DataSource = new DAL.ProductDAL.GetList("*", order, ordertype, anp.PageSize, anp.CurrentPageIndex, GetCond());

rep.DataBind();

}

//選擇排序方式

protected void ddlorder_SelectedIndexChanged(object sender, EventArgs e)

{

BindRep();

}

TextMode="MultiLine" 前臺顯示原樣顯示出box.Replace("\n", "<br />") //把換行替換成br

.Net中頁面刷新時保持滾動條不動

<%@ Page Language="C#" CodeFile="Default.aspx.cs" Inherits="Default" Title="" MaintainScrollPositionOnPostback="true" %>

MaintainScrollPositionOnPostback屬性可以讓滾動條回到原位置

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ASP.NET常用服務器控件方法及屬性