阿七 |
2006-04-03 13:58 |
ASP.NET程序中常用的三十三种代码(2) #u_-TWVt 出处 tBrVg<]t <$E8T>U 6.表格超连接列传递参数 g:HIiGN0Ic P+[R 0QS <asp:HyperLinkColumn Target="_blank" headertext="ID号" DataTextField="id" NavigateUrl="aaa.aspx?id=’ mYCGGwD <%# DataBinder.Eval(Container.DataItem, "数据字段1")%>’ & name=’<%# DataBinder.Eval(Container.DataItem, "数据字段2")%>’ /> 4"{q|~&=:$ 7.表格点击改变颜色 -Db( "LYob}_z if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType == ListItemType.AlternatingItem) )jg3`I@ { \2Yh I0skW e.Item.Attributes.Add("onclick","this.style.backgroundColor=’#99cc00’; gb-n~m[y this.style.color=’buttontext’;this.style.cursor=’default’;"); )j](_kvK } Mvux=Ws 写在DataGrid的_ItemDataBound里 SLW1]ZaG gN*8zui if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType == ListItemType.AlternatingItem) 6(.
&y; { [X|P(&\hQd e.Item.Attributes.Add("onmouseover","this.style.backgroundColor=’#99cc00’; pcE.
this.style.color=’buttontext’;this.style.cursor=’default’;"); NFQ0/iuW e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=’’;this.style.color=’’;"); 4WLB,<b} } BP` UB 1UOFTI2S| 8.关于日期格式 9rhz#w p0Vw@R= 日期格式设定 ~`y6YIJ3 d6uL;eR DataFormatString="{0:yyyy-MM-dd}" 5z0SjQ 我觉得应该在itembound事件中 b( wiJ&t
8$1<N e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的列"].text.ToString("yyyy-MM-dd")) xSw ^v6!2 9.获取错误信息并到指定页面 4]Krx
m`8 .2`S07Z 不要使用Response.Redirect,而应该使用Server.Transfer &",pPuq %N 2=: ;f e.g *\emRI> f)>=.sp // in global.asax w9vqFtj protected void Application_Error(Object sender, EventArgs e) { zI&oZH^vn if (Server.GetLastError() is HttpUnhandledException) 9mr99tA Server.Transfer("MyErrorPage.aspx"); }yUZ(k# G"wy? //其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :) p9 %7h. } {@k5e)
Q Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理 ^MuO;<<,. /.P*%'g 10.清空Cookie Q1g@FsW&U
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7 Cookie.Expires=[DateTime]; ;8H
m#p7, Response.Cookies("UserName").Expires = 0 P/4]x@{ih 11.自定义异常处理 4;x{@Ln >Is
Rd //自定义异常处理类 525W;
mu{ using System; J&wrBVv1uk using System.Diagnostics; *zJ}=%)f .hXxh)F namespace MyAppException YRqIC -_ { `J#(ffo- /// <summary> NZ7g}+GTG /// 从系统异常类ApplicationException继承的应用程序异常处理类。 `;L>[\Xi /// 自动将异常内容记录到Windows NT/2000的应用程序日志 Hz `aj /// </summary> !K'j[cA^ public class AppException:System.ApplicationException h,"K+$ { 8HDYA$L public AppException() [LbUlNq^B@ { @lRTp if (ApplicationConfiguration.EventLogEnabled)LogEvent("出现一个未知错误。"); 9KkxUEkW } Wxx?iW , ]c4?-Vq%u public AppException(string message) 9!&fak_ { dI};l LogEvent(message); `83s97Sa } ~PAF2 ssj(-\5 public AppException(string message,Exception innerException) ;/l$&: { hH_&42E6 LogEvent(message); q$x$ 4 if (innerException != null) %&w 8E[ { Ws$<B
b LogEvent(innerException.Message); 3c#oK } lV924mh } _kGJqyYV 5G
@ //日志记录类 IsP-[0it using System; P5-1z&9O using System.Configuration; Z1Y/2MVSb using System.Diagnostics; X
)6}<A using System.IO; [Ume^ using System.Text; $$'a using System.Threading; TNun)0p ^K[WFi N} namespace MyEventLog F9h'.{@d { 1V?)T /// <summary> n/]w! /// 事件日志记录类,提供事件日志记录支持 y-C=_v_X /// <remarks> }M
U}-6 /// 定义了4个日志记录方法 (error, warning, info, trace) {p.D E /// </remarks> ;zq3>A /// </summary> 3jR> public class ApplicationLog cl\Gh { GTYCNi66 /// <summary> CB!5>k+mC /// 将错误信息记录到Win2000/NT事件日志中 M8Tj;ATr /// <param name="message">需要记录的文本信息</param> *,x-}%X /// </summary> q!fdiv` public static void WriteError(String message) Uw`YlUT\ { 8)KA {gN} WriteLog(TraceLevel.Error, message); 6(M^`&fl } Wnf3[fV6P l( Y
U9dp /// <summary> fS@V`"O6 /// 将警告信息记录到Win2000/NT事件日志中 !\'NBq, /// <param name="message">需要记录的文本信息</param> U<|hIv-& /// </summary> dx., public static void WriteWarning(String message) aB$xQ|~ { PQ0l <]Y WriteLog(TraceLevel.Warning, message); 4hQ.RO } j:Y1 nuvRjd^N /// <summary> B)L=)N /// 将提示信息记录到Win2000/NT事件日志中
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qX} /// <param name="message">需要记录的文本信息</param> B8G9V6KS- /// </summary> tJ qd public static void WriteInfo(String message) =cP7"\ { hRc.^"q9 WriteLog(TraceLevel.Info, message); Bu{1^g: } 5eL_iNqJM /// <summary> VX'cFqrK3 /// 将跟踪信息记录到Win2000/NT事件日志中 L_~vPp /// <param name="message">需要记录的文本信息</param> d*cAm$
/// </summary> pD@2Mt0|]= public static void WriteTrace(String message)
>Nho`m( { 8am/5o WriteLog(TraceLevel.Verbose, message); ^#0k\f>_ } lFZ}. j34L*? /// <summary> %=
PGvu /// 格式化记录到事件日志的文本信息格式 4k6,pt" /// <param name="ex">需要格式化的异常对象</param> cs\/6gSCo /// <param name="catchInfo">异常信息标题字符串.</param> WF&?OHf2 /// <retvalue> No(p:Snbo /// <para>格式后的异常信息字符串,包括异常内容和跟踪堆栈.</para> $Y3mO~ /// </retvalue> ]ysEj3 /// </summary> sfUKH;xC public static String FormatException(Exception ex, String catchInfo) [m+):q^ { ?*K{1Ghf StringBuilder strBuilder = new StringBuilder(); M#'j7EMu if (catchInfo != String.Empty) 4xl}kmvv
{ q"OJF'>w5 strBuilder.Append(catchInfo).Append("\r\n"); #CcC& I
:c }
e^ ZxU/e strBuilder.Append(ex.Message).Append("\r\n").Append(ex.StackTrace); m,1Hlp return strBuilder.ToString(); 'U|Tye i? } gd=gc<z YP dPx{9Y<FzU /// <summary> ='U>P(
R- /// 实际事件日志写入方法 EsK.g/d /// <param name="level">要记录信息的级别(error,warning,info,trace).</param> L^b /+R# /// <param name="messageText">要记录的文本.</param> p@Va`:RDW /// </summary> 4IUdlb private static void WriteLog(TraceLevel level, String messageText) ) Z^b)KAk { fZ7Ap3dmP try Z H1UAf { f*tKj.P
EventLogEntryType LogEntryType; ("!P_Q# switch (level) L';b908r2 { t7; ^rk* case TraceLevel.Error: !YZ$WiPl LogEntryType = EventLogEntryType.Error; EH2
a break; QswbIP/>:' case TraceLevel.Warning: >r8$vQ Gj LogEntryType = EventLogEntryType.Warning; 4n9c break; -z6{! case TraceLevel.Info: 9~Ve}NB#z& LogEntryType = EventLogEntryType.Information; +61h!/<W break; 5U[
bn=n case TraceLevel.Verbose: YuVg/ '= LogEntryType = EventLogEntryType.SuccessAudit; |w)S
&+ break; [e.@Yx_} default: ?K>=>bS^h LogEntryType = EventLogEntryType.SuccessAudit; 6f^q >YP break; </@3}rfUPg } vOnhJN r@v_
hc EventLog eventLog = new EventLog("Application", ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName ); WN`|5"?$ //写入事件日志 "(cMCBVYdA eventLog.WriteEntry(messageText, LogEntryType); O\=c&n~` cE SSSH!m } S#g=;hD catch {} //忽略任何异常 b$O1I[o } 8*\PWl } //class ApplicationLog ?jy6%Y#,i } |
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