<!--#include virtual="/index/include/head.htm"-->
2加页面缓存
<%@ OutputCache Duration="7200" VaryByParam="*" %><%@ OutputCache Duration="7200" VaryByParam="*" %>
3数据绑定之datarowview
<%# import NameSpace="System.Data"%>
<%#((datarowview)container.dataitem)["newsline"]%><%#((DataRowView)Container.DataItem)["newsline"]%>
4好用的图片加文字绑定格式（注意datalist本身就是一个table所以一般把width放在datalist上，里面不用再加width这样可以保证可是不变形）
1
<asp:DataList id="dtlist" runat="server" RepeatColumns="3" width="360">
2<ItemTemplate>
3 <table height="87" border="0"cellpadding="1" cellspacing="1" bgcolor="#C7CDD9">
4 <tr>
5 <td width="32%" height="85" align="center" bgcolor="#FFFFFF"><a href='<%#((DataRowView)Container.DataItem)["newsurl"]%>' target="_blank"><img src='<%#((DataRowView)Container.DataItem)["imgPath"]%>' width="110" height="83" border="0" /></a></td>
6 </tr>
7 <tr>
8 <td>
9 <a href='<%#((DataRowView)Container.DataItem)["newsurl"]%>' target="_blank">'<%#((DataRowView)Container.DataItem)["newsline"]%>' </a>
10 </td>
11 </tr>
12 </table>
13</ItemTemplate>
14</asp:DataList>
5,cs里对绑定数据加颜色2
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dt.Rows[i]["newsline"] = "<font color=\"red\">"+dt.Rows[i]["newsline"]+"</font>";
6获取文件名绑定到地址栏
{
string filename="";
filename=System.IO.Path.GetFileName(Request.Path);
return filename;
}
Wuc_page1.page_url ="../"+ getfilename()+"?page=" + ChannelNewsList1.M_page;
7zai web.config配置编码解码的文字格式
此节设置应用程序的全球化设置。
-->
<globalization
requestEncoding="utf-8"
responseEncoding="gb2312"
/>
8 属性的初始化
{
set{year=value;}
get{return year;}
}
9数据库节日期函数
datepart(year,newsday)
@SelectedTime.IndexOf("-")+1;
10右对齐日期
day.Month.ToString ().PadLeft(2,'0')；
11好用的显示绑定数据的条数，数据种类，与截取字符数据的长度
/// 根据新闻栏目ID来获取新闻列表
/// </summary>
/// <param name="topnum">新闻条数</param>
/// <param name="typeid">新闻栏目ID</param>
/// <param name="len">新闻标题的最大长度</param>
public static DataTable GetNewsListByTypeID(string topnum ,string typeid,int len,string wherePart,string orderPart,string domain,bool isPic)
{
string sql="";
if(wherePart != "")
{
wherePart = " and " + wherePart;
}
if( orderPart == "")
{
orderPart =" news_sort DESC, index_id DESC ";
}
if(isPic)
{
sql ="select top "+topnum+" newsid,newsline,newsday,imgpath,url,news_color,combinedTitle,newsSummary,Quarry,quarryUrl from dbo.VIEW_NEWS_TITLE_INDEX where type_id='"+typeid+"' and imgpath<>''" +wherePart+" ORDER BY news_sort DESC, index_id DESC";
}
else
{
sql ="select top "+topnum+" newsid,newsline,newsday,imgpath,url,news_color,combinedTitle,newsSummary,Quarry,quarryUrl from dbo.VIEW_NEWS_TITLE_INDEX where type_id='"+typeid+"'"+wherePart+" ORDER BY news_sort DESC, index_id DESC";
}
DataTable dt = new DataTable();
dt =Soufun.SqlHelper.ExecuteDataset(connStr, CommandType.Text, sql).Tables[0];
dt.Columns.Add ("newsurl");
dt.Columns.Add ("newstitle");
for(int i=0;i<dt.Rows.Count;i++)
{
//设置跳转
if(dt.Rows[i]["url"].ToString()!="")
{
dt.Rows[i]["newsurl"]=dt.Rows[i]["url"];
}
else
{
string newsurl = "";
string newsid = dt.Rows[i]["newsid"].ToString ();
DateTime day = Convert.ToDateTime(dt.Rows[i]["newsday"]);
newsurl = domain+"news/"+day.Year+"-"+day.Month.ToString ().PadLeft(2,'0')+"-"+day.Day.ToString ().PadLeft(2,'0')+"/"+typeid+"/"+newsid+".htm";
dt.Rows[i]["newsurl"] = newsurl;
}
dt.Rows[i]["newstitle"]=dt.Rows[i]["newsline"];
//设置标题长度
if(dt.Rows[i]["newsline"].ToString().Length>len)
{
dt.Rows[i]["newsline"] = dt.Rows[i]["newsline"].ToString ().Substring (0,len);
}
//设置标题标红
if(dt.Rows[i]["news_color"].ToString()=="1")
{
dt.Rows[i]["newsline"] = "<font color=\"red\">"+dt.Rows[i]["newsline"]+"</font>";
}
}
return dt;
}
12企业库中中设置缓存过期时间
{
TimeSpan ts = new TimeSpan(0, t, 0);
AbsoluteTime at = new AbsoluteTime(ts);
return at;
}
13抛出异常
Exception ex_c = new Exception(message);throw ex_c;
14标准函数注释写法
/// 根据新闻分别编号获得指定条数的新闻列表
/// </summary>
/// <param name="topnum">前多少条</param>
/// <param name="parentid">新闻分类编号</param>
/// <param name="len">新闻截断长度</param>
/// <returns>新闻列表</returns>
15获得远端ip地址
clientip = Request.ServerVariables["REMOTE_ADDR"]
16在查询分析器里显示物理读和逻辑读
SET STATISTICS IO on
17去页面缓存
Response.AddHeader("Cache-Control", "no-cache");
Response.AddHeader("Expires", "0");
html里
<meta http-equiv=Pragma content=no-cache>
<meta http-equiv=expires content=0>
<meta http-equiv="cache-control" content="no-store">
19读文件
{
FileStream reader = File.OpenRead(file_path);
int leng = (int)reader.Length;
Byte[] buffer = new byte[leng];
reader.Read(buffer,0,leng);
Encoding temp = Encoding.GetEncoding("gb2312");
string content = temp.GetString(buffer);
reader.Close();
return content.Trim();
}
21所有页面打开新窗口
<base target="_blank"/>
22前台绑定日期
23去超链接下划线
A:link{text-decoration:none}
A:visited{text-decoration:none}
A:hover {color: #ff00ff;text-decoration:underline}
-->
</style>
24动态添加脚本
Page.ClientScript.RegisterStartupScript(this.GetType(), "onclick", strjavascript);
26常用错误记录方式
message += "堆栈："+ex.StackTrace+((char)13).ToString()+((char)10).ToString();
message += "发生错误对象："+ex.Source+((char)13).ToString()+((char)10).ToString();
message += "发生错误方法："+ex.TargetSite+((char)13).ToString()+((char)10).ToString();
message += "数据库语句："+sqlstring+((char)13).ToString()+((char)10).ToString();
message += "数据库链接："+connstring+((char)13).ToString()+((char)10).ToString();
27sql日期转换(只留年月日)
convert(char(10),datetime,101)
28后台绑定option
{
selectStr += "<option selected value=\"" + dts.Rows[i][0].ToString() + "\">" + (i+1) + "</option>";
}
else
{
selectStr += "<option value=\"" + dts.Rows[i][0].ToString() + "\">" + (i+1) + "</option>";
}
29动态页转静态页基类
30数据库输出xml
for xml auto,elements
31截取字符串
32写文件
33检查添加缓存
DataTable dt = new DataTable ();
string CacheName = "@3$%"+newsid;
object u = Cache.Get(CacheName);
if(u == null)
{
dt = GetNewsContentByNewsID(newsid);
Cache.Insert (CacheName,dt.Copy(),null,DateTime.Now.AddMinutes(60),TimeSpan.Zero);
}
else
{
dt = (DataTable)u;
}
34自定义customErrors
<customErrors defaultRedirect="http://localhost/sitemap.html" mode="RemoteOnly" />
35通过地址栏得到参数并过滤的通用方法。