阿七 |
2006-04-03 13:58 |
ASP.NET程序中常用的三十三种代码(2) ]C_6I\Z#=W 出处 zk?lNs ~*&_zPTN 6.表格超连接列传递参数 Gz`Zp "i%0 C0e<
_6p= <asp:HyperLinkColumn Target="_blank" headertext="ID号" DataTextField="id" NavigateUrl="aaa.aspx?id=’ |
r2'B <%# DataBinder.Eval(Container.DataItem, "数据字段1")%>’ & name=’<%# DataBinder.Eval(Container.DataItem, "数据字段2")%>’ /> :iq1-Pw 7.表格点击改变颜色 Q16RDQ* H}A67J9x if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType == ListItemType.AlternatingItem) ?k/Uw'J4u/ { $L(,q!DvH e.Item.Attributes.Add("onclick","this.style.backgroundColor=’#99cc00’; )x]/b=m this.style.color=’buttontext’;this.style.cursor=’default’;"); 'M&`l%dIPf } yVSJn>l! 写在DataGrid的_ItemDataBound里 +3VY0J %h^; "|Z if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType == ListItemType.AlternatingItem) RE*;nSVFt { VsFRG;:\U e.Item.Attributes.Add("onmouseover","this.style.backgroundColor=’#99cc00’; 6*CvRb& this.style.color=’buttontext’;this.style.cursor=’default’;"); !s5 _JO e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=’’;this.style.color=’’;"); 1_%3cN. } ~|riFp=J @N34 Q-l 8.关于日期格式
. F_pP2A ~r+;i,,X 日期格式设定 %-> X$,Q
: iWO16
= DataFormatString="{0:yyyy-MM-dd}" 8H;yrNL 我觉得应该在itembound事件中 ^C_ ;uz 0jG8Gmh! e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的列"].text.ToString("yyyy-MM-dd")) ("ql//SL 9.获取错误信息并到指定页面 r3;?]r.}7 x+47CDDu3 不要使用Response.Redirect,而应该使用Server.Transfer /GqW1tcO p{NVJ^!+ e.g g=Rl4F] xbsp[0I, // in global.asax \9jEpE^Ju( protected void Application_Error(Object sender, EventArgs e) { a/^ojn if (Server.GetLastError() is HttpUnhandledException) %xPJJ
$P Server.Transfer("MyErrorPage.aspx");
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8X< //其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)
n Hz Xp:" } \2#7B8 Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理 B'SLyf wF[%+n (* 10.清空Cookie e#BxlC K!g!tA$ Cookie.Expires=[DateTime]; zsOOx%
+ Response.Cookies("UserName").Expires = 0 ]O]6O%.ao 11.自定义异常处理 j2^Vz{ "y-/ 9C //自定义异常处理类 a?X#G/) using System; uA%cie using System.Diagnostics; 7&2CLh snVeOe#'S namespace MyAppException \tfhF#' { LIh71Vg/cc /// <summary> m88[(l /// 从系统异常类ApplicationException继承的应用程序异常处理类。 )QB9zl: /// 自动将异常内容记录到Windows NT/2000的应用程序日志 b/UjKNf@ /// </summary> <-xu*Fc public class AppException:System.ApplicationException M5{vYk>,1Q {
wV"C ,*V public AppException() #1[Q?e4,0 { *oru;=D@8 if (ApplicationConfiguration.EventLogEnabled)LogEvent("出现一个未知错误。"); v]m#+E } r'J3\7N!u An=Q`Uxt/ public AppException(string message) u`wT_?%w { ^ =RSoR LogEvent(message); oT^r } l 5z8]/ du^r EMb% public AppException(string message,Exception innerException) @v=A)L { eo'C)j# U LogEvent(message); YL@d+
-\ if (innerException != null) z<s4-GJ)? { #mbl4a LogEvent(innerException.Message); FUKE.Uxd } 9Jp"E5Ql) } Q)ZkUmW *,p16"Q; //日志记录类 D(gpF85t using System; !d=Q@oy5 using System.Configuration; gb@ |\n using System.Diagnostics; U-GV^j
using System.IO; e3{L%rQE using System.Text; 4r>buEU using System.Threading; 1Qgd^o:d ^Sz?c_<2P namespace MyEventLog /yj-^u\R { O"x/O#66 /// <summary> m1lfC /// 事件日志记录类,提供事件日志记录支持 Y&_1U/}h /// <remarks> 2-M]!x) /// 定义了4个日志记录方法 (error, warning, info, trace) [/I1%6; /// </remarks>
@OPyT /// </summary> ;j/-ndd&& public class ApplicationLog 2_HPsEx { dSBW&-p /// <summary> VClw!bm /// 将错误信息记录到Win2000/NT事件日志中 RU'DUf /// <param name="message">需要记录的文本信息</param> kVZ5>D$ /// </summary> @Q atgYu public static void WriteError(String message) 7a:mZ[Vh { '3@WF2a WriteLog(TraceLevel.Error, message); {G%!M+n< } Y">;2Pt; M('
cG /// <summary> V ;)q?
ZHg /// 将警告信息记录到Win2000/NT事件日志中 2;`"B|-T /// <param name="message">需要记录的文本信息</param> oa?eK /// </summary> (&$|R\W. public static void WriteWarning(String message) Mr(~
* { 9c=_p'G3Fw WriteLog(TraceLevel.Warning, message); D4r5wc
% } w%k)J{\ f6Wu+~|Y /// <summary> GJItGq`) /// 将提示信息记录到Win2000/NT事件日志中 m!:7ur:Y /// <param name="message">需要记录的文本信息</param> 6Bp{FOj:Ss /// </summary> wDZFOx0#8 public static void WriteInfo(String message) ys;e2xekg { @:xO5L}Io WriteLog(TraceLevel.Info, message); q9oF8&O, } iEki<e/ /// <summary> 38Z"9 /// 将跟踪信息记录到Win2000/NT事件日志中 7-ba-[t#A /// <param name="message">需要记录的文本信息</param> 8'B\%.+"8e /// </summary> FV$= l
% public static void WriteTrace(String message) fu=}E5ScK { .KT+,Y WriteLog(TraceLevel.Verbose, message); :*&wnQMKR } _'H<zZo H]=3^g64 /// <summary> ^l^_K)tw* /// 格式化记录到事件日志的文本信息格式 G-3.- /// <param name="ex">需要格式化的异常对象</param> pLzsL>6h /// <param name="catchInfo">异常信息标题字符串.</param> :/vB,JC /// <retvalue> @?Y^=0 /// <para>格式后的异常信息字符串,包括异常内容和跟踪堆栈.</para> h;4g#|, /// </retvalue>
Uzb"$Ue4 /// </summary> HxY,R^
public static String FormatException(Exception ex, String catchInfo) ;6b#I$-J- { EkSTN StringBuilder strBuilder = new StringBuilder(); y-n\;d>[( if (catchInfo != String.Empty) 38q@4U=aiw { &{]%=stI strBuilder.Append(catchInfo).Append("\r\n"); qfSoF| } f6L_uk`{ strBuilder.Append(ex.Message).Append("\r\n").Append(ex.StackTrace); &vMH
AZd return strBuilder.ToString(); q<yH!
} ($S{td; o~-X7)] /// <summary> "j a0,%3 /// 实际事件日志写入方法 [QZ~~(R /// <param name="level">要记录信息的级别(error,warning,info,trace).</param> n~&R_"mv( /// <param name="messageText">要记录的文本.</param> q6Q=Zo@ /// </summary> oyr2lfz* private static void WriteLog(TraceLevel level, String messageText) z}Z`kq+C { hx^a&" try Eq8OAuN { b<F 4_WF EventLogEntryType LogEntryType; KFZ[gqW8YY switch (level) Q"Ec7C5eM { __ mtZ{ case TraceLevel.Error: li%-9Jd LogEntryType = EventLogEntryType.Error; Mt
YP3: break; AltE~D/4 case TraceLevel.Warning: 87^
4", LogEntryType = EventLogEntryType.Warning; 13QCM0# break; r/4]b]n case TraceLevel.Info: s{k\1P(G} LogEntryType = EventLogEntryType.Information; b;t]k9:"L break; 'u3+k. case TraceLevel.Verbose: `{wku@ LogEntryType = EventLogEntryType.SuccessAudit; =P#!>*\ar break; AfEEYP)N default: x5|v#
-F ^ LogEntryType = EventLogEntryType.SuccessAudit; ]T51;j'48 break; q8h{-^" } ?8,N4T0) GiZ'IDV EventLog eventLog = new EventLog("Application", ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName ); ,>UmKrYo //写入事件日志 8QN8bGxK eventLog.WriteEntry(messageText, LogEntryType); ziycyf.d
VjqdKQeVq } S<_pGz$V catch {} //忽略任何异常 be/1-=m } N 9&@,3 } //class ApplicationLog NACY;XQ% } |
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