by Dinesh Thakur Category: Object-oriented programming (OOP)

(Dynamic-linked library) In programming, a type of LIBRARY file that becomes LINKED to a program that uses it only temporarily when the program is loaded into memory or executed, rather than being permanently built-in when the program is COMPILED. The same DLL may therefore be shared by many different programs, rather than each program having to contain its own copy; this saves on memory usage and potentially simplifies the updating of programs.

 
by Dinesh Thakur Category: Object-oriented programming (OOP)

This phrase has two meanings. Compile time can refer to how long it takes to compile a given program (see the entry above). The compile time for a program depends on how long and complicated the program is, the speed of the computer, and the quality of the compiler.



 
by Dinesh Thakur Category: Object-oriented programming (OOP)

To hold the internal data of our class create private variables in the general declaration of the class modules. Then we have to deign which properties we want to write access. We can decide these things using property get and property let procedures.

 
by Dinesh Thakur Category: Object-oriented programming (OOP)

Inside our class, we define variables, which are the properties of the class. We could declare all the variables as Public so that all other project code could set and retrieve their values.

 
by Dinesh Thakur Category: Object-oriented programming (OOP)

The Class_initialize event is triggered when an object is created and the Class_initialize event occurs when an object goes out of scope or is terminated with

 
by Dinesh Thakur Category: Object-oriented programming (OOP)

When we pass a value to a procedure we may pass it ByVal or ByRef.

 
by Dinesh Thakur Category: Object-oriented programming (OOP)

Declaring variables means naming the variable and specifying their data types, that is declaration statements establish our project’s variables and constants give them names, and specify the data type they will hold.



 
by Dinesh Thakur Category: DataBase

1. You can bound data to data bound controls like Labels, Text Boxes, Checkbox. If you don?t want user to change the data you use Label control, where user can only view the data else you can use Text boxes.

 
by Dinesh Thakur Category: DataBase

1. Two handy properties of the record set are BOF (beginning of file) and EOF (end of file). The BOF property is automatically set to true when the record pointer is before the first record in the record set.

 
by Dinesh Thakur Category: DataBase

1. When you want to add new record you have couple of choices. If you are using data control?s navigation buttons, you can allow Visual Basic to do the adds automatically. Set the data control?s EOF action property to

 
by Dinesh Thakur Category: DataBase

1. The delete method deletes current record. The user should display the record to delete and click a Delete command button or menu choice.

 
by Dinesh Thakur Category: DataBase

The record set object has an Update method, which you can use to save any changes in the data.

 
by Dinesh Thakur Category: DataBase

Database tables can be bound to controls, such as text box, labels, checkbox and list boxes. But it displays one row data at a time.

 
by Dinesh Thakur Category: DataBase

When you want to make sure that a required field has an entry or that field has valid data, the Validate event is good location to check. If the field is not valid, you can display an error message and cancel the operation.

 
by Dinesh Thakur Category: DataBase

Recordset:

 

The current group of records associated with a data control; may be a table recordset , a dynaset, or a snapshot.

 
by Dinesh Thakur Category: DataBase

Visual Basic uses Structured Query Language (SQL) to create new dynasets. SQL is an Industrial Standard language for processing relational database.



 
by Dinesh Thakur Category: DataBase

The Databound grid control in VB 6.0 adds power and flexibility to your DataBase programs. you can easily provide grid access to any available DataBase.

 
by Dinesh Thakur Category: DataBase

You can use the Record count and absolute position properties of the Data Control Recordset to display the RecordNum and RecordCount when viewing DataBase Records.

 
by Dinesh Thakur Category: DataBase

The fastest way to search for a particular record is to use the Seek method , which can be used only with a table recordset tab.The Seek method uses indexes for the search , which is much faster than checking every record in the table as you do in a find .

 

Page 4 of 5



About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.