... the modification has occurred. However, this doesn’t mean that a changecan’t be rolled back, because the trigger has direct access to the modified row andas such can roll back any modification. ... the connection23 cnnUserMan = new SqlConnection(STR_CONNECTION_STRING);24 cnnUserMan.Open();2526 // Instantiate and initialize command27 cmmUser = new SqlCommand(“SELECT * FROM viwUser”, cnnUserMan);28 ... constraint in some situations, because a trigger can access columnsin other tables, unlike a constraint, which can only access columns in the currenttable or row. If your code is to handle your business...
... basic concepts and terminology of object-oriented programming. Use common objects and references types. Create, initialize, and destroy objects in a C# application. Build new C# classes ... sample. xii Programmingwith C# Trainer Materials Compact Disc Contents The Trainer Materials compact disc contains the following files and folders: Autorun.exe. When the CD is inserted ... section provides you with a brief description of the course, audience, suggested prerequisites, and course objectives. Description This five-day instructor-led course provides students with...
... YOUR OWN CLASSESCHAPTER 9: DESIGNING CLASSES 227Class Design 228Scope 230Block Scope 231Local Scope 232Class Scope 232Namespace Scope 233Visualizing Scope 233Why Does C# Support Scope? ... from which you can select to view the source code for the fi le you just right-clicked. You can move to the Solution Explorer menu bar and click the source code icon to view the code that ... Studio” section of this chapter to check each step to ensure you followed the correct sequence.SUMMARYIn this chapter you learned how object-oriented programming started more than four decades...
... Classes Object Oriented Programming with C+ +/ Session 1/ 19 of 50Method (Contd.)•The black box actually contains code (sequences of computer instructions) and data (information which ... with C+ +/ Session 1/ 3 of 50Session Objectives (Contd.)•Methods•Abstraction•Inheritance•Encapsulation•Polymorphism■Compare Classes with Structures■Describe Private and Public sections ... interface to the object. Object Oriented Programming with C+ +/ Session 1/ 37 of 50Using the classbegin programclass exampleclass{ // specify a classprivate:object_data is an integer; // class...
... private:static int count:int car_number;char name[30]; public:race_cars(){count++;} //constructor to increment count~race_cars(){count ;} //destructor to decrement count};int race_cars::count;The ... //errorObject Oriented Programming with C+ +/ Session 2/ 29 of 37The count is commonCount:3 cars in the raceObject Oriented Programming with C+ +/ Session 2/ 28 of 37Exampleclass race_cars{ ... as a private category of the class, the non-member functions cannot access it. If it is declared as public, then any member of the class can access. Static member can become a global...
... oraDataReader.Close(); }A B C D OracleSelectRTObject.LogInForm cmdReadLogIn_Click() Figure 5.164 Coding for the ReadLogIn button Click method. private void cmdCancel_Click(object sender, ... namespace System.Data.SqlClient to the namespace declaration section on this SP form code window. The only difference is the codes for the Select button Click method, cmdSelect_Click(). Don ’ t copy ... derived class CSE_DEPTDataContext is created with the fi rst constructor. A trick here is that no connection string is included in this connection object. Yes, but where is the connection string?...
... "FacultyCourse"; paramFacultyCourse.OracleType = OracleType.Cursor; paramFacultyCourse.Direction = ParameterDirection.Output; oraCommand.Connection = logForm.oraConnection; oraCommand.CommandType ... data queries on Microsoft Access 2007, SQL Server 2005, and Oracle databases. • Use the OleDbConnection, SqlConnection, or OracleConnection class to connect to Microsoft Access 2007, SQL Server ... Query with Visual C# .NET • Use the OleDbConnection, SqlConnection, and OracleConnection class to dynamically connect to Microsoft Access 2007, SQL Server 2005 Express, and Oracle 10g XE databases....
... logForm.getLogInForm(); accCommand.Connection = logForm.accConnection; accCommand.CommandType = CommandType.Text; accCommand.CommandText = cmdString; accCommand.Parameters.Add("@name", OleDbType.Char).Value ... AccessInsertRTObject.sln • AccessInsertRTObject.csproj • AccessInsertRTObject.exe • AccessInsertRTObject.pdb • AccessInsertRTObject.cshost.exe • AccessInsertRTObject.xml To rename the last ... faculty without any photo accompanying with that insertion. 2. The Faculty Photo checkbox is checked, and the Photo Location is the Default Location. 3. The Faculty Photo checkbox is checked,...
... if (CourseInfo[pos] == String.Empty) check++; } return check; } private void cmdBack_Click(object sender, EventArgs e) { this.Close(); } private void cmdCancel_Click(object sender, ... string cmdString = "InsertCourse"; int intInsert = 0;OracleCommand oraCommand = new OracleCommand(); oraCommand.Connection = oraConnection; oraCommand.CommandType = CommandType.StoredProcedure; ... cations to other forms. Basically, these modifi cations change the con-nection object from SqlConnection to OleDbConnection for all other forms to match the connection requirement of the Microsoft...