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最新回應
  • Newtonsoft.Json.JsonConvert.DeserializeObject 失敗的情況
    test...more
  • dotnet ef dbcontext scaffold
    ...more
  • [ASP.NET] 利用 aspnet_regiis 加密 web.config
    ...more
  • IIS ARR (reverse proxy) 服務安裝
    ...more
  • [錯誤訊息] 請加入 ScriptResourceMapping 命名的 jquery (區分大小寫)
    ...more
  • 用 Javascript 跨網頁讀取 cookie (Cookie cross page, path of cookie)
    ...more
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    本人信箱被盜用以致資料外洩,是否可以請貴平台予以協助刪除該信箱之使用謝謝囉...more
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    aaaaa...more
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    太感謝你了~~~你救了我被windows 認證卡了好幾天QQ...more
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    FOR EACH ROW 可能要改為 FOR EACH STATEMENT ...more
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頁數 7 / 7 上一頁
搜尋 code 結果:
使用 Drag Drop 將檔案放入網頁上傳檔案 (HTML5)
  • How to Use HTML5 File Drag & Drop
  • How to Open Dropped Files Using HTML5 and JavaScript
  • How to Asynchronously Upload Files Using HTML5 and Ajax
  • How to Create File Upload Progress Bars in HTML5 and JavaScript

這幾篇文章提到使用拖拉方式將檔案放到網頁裡面
然後在本地端預覽,然後ajax上傳,上傳時還有 progress bar
一整套運作模式說明,並附上sample code,挺棒的
附檔sample code

-------------------------------------------
測試後補充:
1. 範例中的 dragover event 要改成 dragenter 比較正確
然後 dragover 最好是做成 return false (ev.stopPropagation())
2. Server端不能用Requst.Files收檔案,要直接處理 Request.InputStream另存成檔案

 
More...
darren, 2012/10/7 上午 01:20:42
Server Error - 由於該物件目前的狀態,導致作業無效。

 ASP.NET 在處理 HTTP POST 要求時最多只能接受 1,000 個參數,一般來說不會有人透過 POST 傳遞表單資料超過 1,000 個欄位 ( 以筆者的經驗來說,傳過最多的一次是 700 個欄位,當時是個問卷系統 ),如果傳數參數超過 1,000 筆的話,就會出現 Operation is not valid due to the current state of the object. (英文) 或 由於該物件目前的狀態,導致作業無效。 (中文) 例外狀況,細部的例外訊息會有 HttpException (0x80004005): The URL-encoded form data is not valid. (英文) 或 HttpException (0x80004005): URL 編碼型式資料無效。
參考:http://blog.miniasp.com/post/2012/01/01/Efficient-Denial-of-Service-Attacks-on-Web-Application-Platforms.aspx

解:
web.config加下面這個設定
<appSettings>
     <add key="aspnet:MaxHttpCollectionKeys" value="5000" />
</appSettings>
 
More...
Reiko, 2012/8/15 下午 06:39:13
網站在大流量時卡住 -- maxConcurrentRequestsPerCPU 和 requestQueueLimit
突然發現網站在大流量卡住時,看 CPU 和記憶體都沒有什麼問題時,可能是以下的原因。

在 C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Aspnet.config 之下, 可以設定

<
system.web>
   <applicationPool maxConcurrentRequestsPerCPU="12" maxConcurrentThreadsPerCPU="0" requestQueueLimit="5000"/>
</system.web>

另外,在 registry 中,可以設定 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ASP.NET\2.0.50727.0\MaxConcurrentRequestsPerCPU


參考:
http://blogs.msdn.com/b/tmarq/archive/2007/07/21/asp-net-thread-usage-on-iis-7-0-and-6-0.aspx
More...
Bike, 2012/7/30 上午 09:04:47
使用 Net.WebRequest 出現 ''已經嘗試太多次自動重新導向'' 的解決方法

當使用 WebRequest 來 Get 網址時,出現"已經嘗試太多次自動重新導向"。

通常為對方網站有進行某種判斷。以下為試過的項目。

上次是將 CookieContainer 設定一個 New Net.CookieContainer 即可。

            Dim http As Net.HttpWebRequest = Net.WebRequest.Create(Url)
            http.Method = "GET"
            http.ContentType = "application/x-www-form-urlencoded;"

            http.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Win64; x64; Trident/5.0)"
            http.CookieContainer = New Net.CookieContainer
            http.Referer = Url

More...
Jerry, 2012/6/18 下午 07:54:03
global.asax 的事件
從 http://blog.ie-soft.de/post/2007/12/globalasax-events.aspx  抄來的. 留作參考

HttpApplication Events:

Application_AcquireRequestState
Occurs when ASP.NET acquires the current state (for example, session state) that is associated with the current request. 

Application_AuthenticateRequest
Occurs when a security module has established the identity of the user. 

Application_AuthorizeRequest
Occurs when a security module has verified user authorization. 

Application_BeginRequest
Occurs as the first event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 

Application_Disposed
Adds an event handler to listen to the Disposed event on the application. 

Application_EndRequest
Occurs as the last event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 

Application_Error
Occurs when an unhandled exception is thrown. 

Application_PostAcquireRequestState
Occurs when the request state (for example, session state) that is associated with the current request has been obtained. 

Application_PostAuthenticateRequest
Occurs when a security module has established the identity of the user. 

Application_PostAuthorizeRequest
Occurs when the user for the current request has been authorized. 

Application_PostMapRequestHandler
Occurs when ASP.NET has mapped the current request to the appropriate event handler. 

Application_PostReleaseRequestState
Occurs when ASP.NET has completed executing all request event handlers and the request state data has been stored. 

Application_PostRequestHandlerExecute
Occurs when the ASP.NET event handler (for example, a page or an XML Web service) finishes execution. 

Application_PostResolveRequestCache
Occurs when ASP.NET bypasses execution of the current event handler and allows a caching module to serve a request from the cache. 

Application_PostUpdateRequestCache
Occurs when ASP.NET completes updating caching modules and storing responses that are used to serve subsequent requests from the cache. 

Application_PreRequestHandlerExecute
Occurs just before ASP.NET begins executing an event handler (for example, a page or an XML Web service). 

Application_PreSendRequestContent
Occurs just before ASP.NET sends content to the client. 

Application_PreSendRequestHeaders
Occurs just before ASP.NET sends HTTP headers to the client. 

Application_ReleaseRequestState
Occurs after ASP.NET finishes executing all request event handlers. This event causes state modules to save the current state data. 

Application_ResolveRequestCache
Occurs when ASP.NET completes an authorization event to let the caching modules serve requests from the cache, bypassing execution of the event handler (for example, a page or an XML Web service). 

Application_UpdateRequestCache
Occurs when ASP.NET finishes executing an event handler in order to let caching modules store responses that will be used to serve subsequent requests from the cache. 

Application_Init
This method occurs after _start and is used for initializing code. 

Application_Start
As with traditional ASP, used to set up an application environment and only called when the application first starts.

Application_End
Again, like classic ASP, used to clean up variables and memory when an application ends.

Session Events:

Session_Start
As with classic ASP, this event is triggered when any new user accesses the web site.

Session_End
As with classic ASP, this event is triggered when a user's session times out or ends. Note this can be 20 mins (the default session timeout value) after the user actually leaves the site.

Profile Events:

Profile_MigrateAnonymous
Occurs when the anonymous user for a profile logs in.

Passport Events:

PassportAuthentication_OnAuthenticate
Raised during authentication. This is a Global.asax event that must be named PassportAuthentication_OnAuthenticate.
 

Possibly more events defined in other HttpModules like:

System.Web.Caching.OutputCacheModule
System.Web.SessionState.SessionStateModule
System.Web.Security.WindowsAuthentication
System.Web.Security.FormsAuthenticationModule
System.Web.Security.PassportAuthenticationModule
System.Web.Security.UrlAuthorizationModule
System.Web.Security.FileAuthorizationModule
System.Web.Profile.ProfileModule

More...
Bike, 2012/6/9 上午 08:55:08
C# memo
*****2012/08/03************************************************
vb: a mod b
c#: a % b

*****2012/06/27************************************************
Server.UrlEncode("xxxx") => HttpUtility.UrlEncode("xxxxx");
Response.Write("XXX") =>  HttpContext.Current.Response.Write("XXX");
******************************************************************

型別轉換(int)XXXXXX,將XXXXX轉換為型別int

轉換Value 至 Enum
oRec.Status = (DB.ForumArticle.EN.Status)Enum.Parse(typeof(DB.ForumArticle.EN.Status), this.ddlENStatus.SelectedValue);

強制轉換型別至int
int Status = (int)DB.ForumArticle.EN.Status.Deleted;

vb
Public Shared Funciont AA() as string
 return xxxxx
End Function


C#
public static string aa()
{
 return xxxx
}



vb
Public Shared Sub AA()
......
End Sub


C#
public static void AA()
{
.....
}



vb
Try
 xxxxxx
Catch ex As Exception
 UW.WU.WriteErrorToLog(ex)
End Try


C#
try
{
 xxxxxx
}
catch (Exception ex)
{
 tran.Rollback();
}



Split
char[] delimiterChars = { ',' };
foreach (string tags in cbTags.Split(delimiterChars))
{

}



vb
select case AA
 case "AA"
  xxx
 case "BB"
  bbb
 case else
  aaaa
end select


C#
switch (AA) {
 case "AA":
  xxx();
  break;
 case "BB":
  bbb();
  break;
 default:
  aaaa();
  break;
}
More...
Reiko, 2012/5/31 上午 11:55:50
建立索引時加入其它非建值欄位
語法:


USE AdventureWorks;
GO
CREATE INDEX IX_Address_PostalCode      
ON Person.Address (PostalCode)      
INCLUDE (AddressLine1, AddressLine2, City, StateProvinceID);


在建立索引時, 可以加入非鍵值欄位, 可以加速讀取速度, 避開索引大小限制, 可惜 SQL 2008 沒有 UI 介面可以使用, 但 SQL 2012 好像就有 UI 可以用了.

參考資料:  Create Indexes with Included Columns http://msdn.microsoft.com/en-us/library/ms190806.aspx
More...
Bike, 2012/5/3 下午 02:53:46
Name Contains

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<input name="man-news" />

<input name="milkman" />
<input name="letterman2" />
<input name="newmilk" />
<script>$('input[name*="man"]').val('has man in it!');</script>

</body>
</html>

More...
Reiko, 2012/4/13 下午 07:31:28
由於該物件目前的狀態,導致作業無效。
[InvalidOperationException: 由於該物件目前的狀態,導致作業無效。]
   System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded() +2692302
   System.Web.HttpValueCollection.FillFromEncodedBytes(Byte[] bytes, Encoding encoding) +61
   System.Web.HttpRequest.FillInFormCollection() +148

[HttpException (0x80004005): URL 編碼型式資料無效。]
   System.Web.HttpRequest.FillInFormCollection() +206
   System.Web.HttpRequest.get_Form() +68
   System.Web.HttpRequest.get_HasForm() +8735447
   System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97
   System.Web.UI.Page.DeterminePostBackMode() +63
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +133



Error Msg:



若你的 Web 應用程式真的會傳遞超過 1,000 個欄位時,這個預設值也是可以設定的,請修改網站根目錄下的 web.config 檔,並在 區段加上一組 aspnet:MaxHttpCollectionKeys 設定即可:

<appSettings>
 <add key="aspnet:MaxHttpCollectionKeys" value="2500" />
</appSettings>

參考說明:
http://blog.miniasp.com/post/2012/01/01/Efficient-Denial-of-Service-Attacks-on-Web-Application-Platforms.aspx
More...
Reiko, 2012/4/10 下午 08:11:15
用 JavaScript 複製網頁上的圖片到剪貼簿
資料來源:http://sanchen.blogspot.com/2008/07/javascript.html

在 IE 中很簡單就能辦到, 至於其他的瀏覽器......目前還沒這個需求, 先擱著~~~~~

var img = document.getElementsByTagName("IMG")[0];
var rng = document.body.createControlRange();
rng.add(img);
rng.execCommand('Copy');
真是簡單到不行! 可以看出 Microsoft 當初那群規劃設計 IE 的人實在是太厲害了!!
More...
Reiko, 2012/3/30 下午 05:33:01
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