C# HttpApplicationState.UnLock方法代码示例

 private string GetSessionId(HttpApplicationState Application)
 {
     if (Application["sessionId"] == null)
     {
         Application.Lock();
         Application["sessionId"] = opentok.CreateSession().Id;
         Application.UnLock();
     }
     return (string)Application["sessionId"];
 }

 /// <summary>
 /// 设置当前上传的进度信息
 /// 根据UploadID记录在Application中
 /// </summary>
 /// <param name="uploadId"></param>
 /// <param name="progress"></param>
 /// <param name="application"></param>
 void SetProgress(string uploadId, Progress progress, HttpApplicationState application)
 {
     if (uploadId == null || uploadId == string.Empty || progress == null)
         return;
     application.Lock();
     application["OpenlabUpload_" + uploadId] = progress;
     application.UnLock();
 }

 public static void SystemMessage(HttpApplicationState Application, string sERROR_TYPE, StackFrame stack, string sMESSAGE)
 {
     if ( Application == null )
         return;
     // 08/12/2007 Paul.  Ignore the exception generated by Response.Redirect.
     // 08/13/2007 Paul.  Instead of ignoring the the english abort message,
     // transition to the above function that ignores the abort exception.  Every file will need to be touched.
     //if ( sMESSAGE == "Thread was being aborted." )
     //	return;
     try
     {
         Application.Lock();
         DataTable dt = Application["SystemErrors"] as DataTable;
         if ( dt == null )
         {
             dt = new DataTable();
             DataColumn colCREATED_BY   = new DataColumn("CREATED_BY"  , Type.GetType("System.Guid"    ));
             DataColumn colDATE_ENTERED = new DataColumn("DATE_ENTERED", Type.GetType("System.DateTime"));
             DataColumn colERROR_TYPE   = new DataColumn("ERROR_TYPE"  , Type.GetType("System.String"  ));
             DataColumn colUSER_NAME    = new DataColumn("USER_NAME"   , Type.GetType("System.String"  ));
             DataColumn colFILE_NAME    = new DataColumn("FILE_NAME"   , Type.GetType("System.String"  ));
             DataColumn colMETHOD       = new DataColumn("METHOD"      , Type.GetType("System.String"  ));
             DataColumn colLINE_NUMBER  = new DataColumn("LINE_NUMBER" , Type.GetType("System.String"  ));
             DataColumn colMESSAGE      = new DataColumn("MESSAGE"     , Type.GetType("System.String"  ));
             dt.Columns.Add(colCREATED_BY  );
             dt.Columns.Add(colDATE_ENTERED);
             dt.Columns.Add(colERROR_TYPE  );
             dt.Columns.Add(colUSER_NAME   );
             dt.Columns.Add(colFILE_NAME   );
             dt.Columns.Add(colMETHOD      );
             dt.Columns.Add(colLINE_NUMBER );
             dt.Columns.Add(colMESSAGE     );
             Application["SystemErrors"] = dt;
         }
         DataRow row = dt.NewRow();
         dt.Rows.Add(row);
         // 12/22/2007 Paul.  The current context will be null when inside a timer.
         if ( HttpContext.Current != null && HttpContext.Current.Session != null )
         {
             row["CREATED_BY"  ] = Security.USER_ID         ;
             row["USER_NAME"   ] = Security.USER_NAME       ;
         }
         row["DATE_ENTERED"] = DateTime.Now             ;
         row["ERROR_TYPE"  ] = sERROR_TYPE              ;
         row["MESSAGE"     ] = sMESSAGE                 ;
         if ( stack != null )
         {
             string sFILE_NAME = stack.GetFileName();
             if ( HttpContext.Current != null && HttpContext.Current.Request != null )
             {
                 if ( !Sql.IsEmptyString(sFILE_NAME) )
                 {
                     // 04/16/2006 Paul.  Use native function to get file name.
                     // 08/01/2007 Paul.  Include part of the path in the file name. Remove the physical root as it is not useful.
                     sFILE_NAME = sFILE_NAME.Replace(HttpContext.Current.Request.PhysicalApplicationPath, "~" + Path.DirectorySeparatorChar);
                     row["FILE_NAME"] = sFILE_NAME.Replace(Path.DirectorySeparatorChar, '/');
                 }
             }
             else
             {
                 row["FILE_NAME"] = sFILE_NAME;
             }
             row["METHOD"      ] = stack.GetMethod()        ;
             row["LINE_NUMBER" ] = stack.GetFileLineNumber();
         }
     }
     finally
     {
         Application.UnLock();
     }
 }

//.........这里部分代码省略.........
				catch
				{
				}
				row["CREATED_BY"  ] = gUSER_ID    ;
				row["USER_NAME"   ] = sUSER_NAME  ;
				row["DATE_ENTERED"] = DateTime.Now;
				row["ERROR_TYPE"  ] = sERROR_TYPE ;
				row["MESSAGE"     ] = sMESSAGE    ;
				try
				{
					if ( Context != null && Context.Request != null )
					{
						HttpRequest Request = Context.Request;
						sREMOTE_HOST      = Request.UserHostName;
						sSERVER_HOST      = Request.Url.Host    ;
						sTARGET           = Request.Path        ;
						sRELATIVE_PATH    = Request.AppRelativeCurrentExecutionFilePath;
						sPARAMETERS       = Request.QueryString.ToString();
					}
				}
				catch
				{
				}
				if ( stack != null )
				{
					sFILE_NAME   = stack.GetFileName();
					sMETHOD      = stack.GetMethod().ToString();
					nLINE_NUMBER = stack.GetFileLineNumber();
					try
					{
						if ( Context != null && Context.Request != null )
						{
							if ( !Sql.IsEmptyString(sFILE_NAME) )
							{
								// 04/16/2006   Use native function to get file name. 
								// 08/01/2007   Include part of the path in the file name. Remove the physical root as it is not useful. 
								sFILE_NAME = sFILE_NAME.Replace(Context.Request.PhysicalApplicationPath, "~" + Path.DirectorySeparatorChar);
								sFILE_NAME = sFILE_NAME.Replace(Path.DirectorySeparatorChar, '/');
							}
						}
					}
					catch
					{
					}
					row["FILE_NAME"   ] = sFILE_NAME;
					row["METHOD"      ] = sMETHOD;
					row["LINE_NUMBER" ] = nLINE_NUMBER;
				}

				try
				{
					DbProviderFactory dbf = DbProviderFactories.GetFactory(Application);
					using ( IDbConnection con = dbf.CreateConnection() )
					{
						con.Open();
						// 10/07/2009   We need to create our own global transaction ID to support auditing and workflow on SQL Azure, PostgreSQL, Oracle, DB2 and MySQL. 
						using ( IDbTransaction trn = Sql.BeginTransaction(con) )
						{
							try
							{
								SqlProcs.spSYSTEM_LOG_InsertOnly(gUSER_ID, sUSER_NAME, sMACHINE, sASPNET_SESSIONID, sREMOTE_HOST, sSERVER_HOST, sTARGET, sRELATIVE_PATH, sPARAMETERS, sERROR_TYPE, sFILE_NAME, sMETHOD, nLINE_NUMBER, sMESSAGE, trn);
								trn.Commit();
							}
							catch//(Exception ex)
							{
								trn.Rollback();
								// 10/26/2008   Can't throw an exception here as it could create an endless loop. 
								//SplendidError.SystemMessage(Context, "Error", new StackTrace(true).GetFrame(0), Utils.ExpandException(ex));
							}
						}
					}
				}
#if DEBUG
				catch(Exception ex)
				{
					System.Diagnostics.Trace.WriteLine(ex.Message);
				}
#else
				catch
				{
				}
#endif
				try
				{
					// 04/23/2010   Lets cap the error cache at 100 messages. 
					// We are going to assume that the top rows are the oldest records. 
					while ( dt.Rows.Count > 100 )
					{
						dt.Rows.RemoveAt(0);
					}
				}
				catch
				{
				}
			}
			finally
			{
				Application.UnLock();
			}
		}

//.........这里部分代码省略.........
				string sMACHINE          = String.Empty;
				string sREMOTE_URL       = Sql.ToString(Application["Taoqi_REMOTE_URL"]);
				string sFILE_NAME        = String.Empty;
				string sMETHOD           = String.Empty;
				Int32  nLINE_NUMBER      = 0;

				try
				{
					// 09/17/2009   Azure does not support MachineName.  Just ignore the error. 
					sMACHINE = System.Environment.MachineName;
				}
				catch
				{
				}
				DataRow row = dt.NewRow();
				dt.Rows.Add(row);
				try
				{
					// 12/22/2007   The current context will be null when inside a timer. 
					if ( Context != null && Context.Session != null )
					{
						gUSER_ID          = Security.USER_ID  ;
						sUSER_NAME        = Security.USER_NAME;
					}
				}
				catch
				{
				}
				row["DATE_ENTERED"] = DateTime.Now;
				row["ERROR_TYPE"  ] = sERROR_TYPE ;
				row["MESSAGE"     ] = sMESSAGE    ;
				if ( stack != null )
				{
					sFILE_NAME   = stack.GetFileName();
					sMETHOD      = stack.GetMethod().ToString();
					nLINE_NUMBER = stack.GetFileLineNumber();
					try
					{
						if ( Context != null && Context.Request != null )
						{
							if ( !Sql.IsEmptyString(sFILE_NAME) )
							{
								// 04/16/2006   Use native function to get file name. 
								// 08/01/2007   Include part of the path in the file name. Remove the physical root as it is not useful. 
								sFILE_NAME = sFILE_NAME.Replace(Context.Request.PhysicalApplicationPath, "~" + Path.DirectorySeparatorChar);
								sFILE_NAME = sFILE_NAME.Replace(Path.DirectorySeparatorChar, '/');
							}
						}
					}
					catch
					{
					}
					row["FILE_NAME"   ] = sFILE_NAME;
					row["METHOD"      ] = sMETHOD;
					row["LINE_NUMBER" ] = nLINE_NUMBER;
				}

				try
				{
					DbProviderFactory dbf = DbProviderFactories.GetFactory(Application);
					using ( IDbConnection con = dbf.CreateConnection() )
					{
						con.Open();
						// 10/07/2009   We need to create our own global transaction ID to support auditing and workflow on SQL Azure, PostgreSQL, Oracle, DB2 and MySQL. 
						using ( IDbTransaction trn = Sql.BeginTransaction(con) )
						{
							try
							{
								SqlProcs.spSYSTEM_SYNC_LOG_InsertOnly(gUSER_ID, sMACHINE, sREMOTE_URL, sERROR_TYPE, sFILE_NAME, sMETHOD, nLINE_NUMBER, sMESSAGE, trn);
								trn.Commit();
							}
							catch //(Exception ex)
							{
								trn.Rollback();
								// 10/26/2008   Can't throw an exception here as it could create an endless loop. 
								//SplendidError.SystemMessage(Context, "Error", new StackTrace(true).GetFrame(0), Utils.ExpandException(ex));
							}
						}
					}
				}
				catch
				{
				}
				// 02/11/2012   Dumping the error message will help when debugging. 
#if DEBUG
				try
				{
					if ( sERROR_TYPE == "Error" )
						Debug.WriteLine(sMESSAGE);
				}
				catch
				{
				}
#endif
			}
			finally
			{
				Application.UnLock();
			}
		}