BOF Indicates that the current record position is before the first record in a Recordset object. EOF Indicates that the current record position is after the last record in a Recordset object.
Visual Basic (VB) is an event-driven programming language and environment from Microsoft that provides a graphical user interface (GUI) which allows programmers to modify code by simply dragging and dropping objects and defining their behavior and appearance.
EOF is a symbolic constant that stands for End Of File, and it corresponds to the Ctrl-d sequence: when you press Ctrl-d while inputting data, you signal the end of input. Fortunately, all C programming environments have a standard header file that contains the appropriate EOF definition.
A Do… Until loop is used when we want to repeat a set of statements as long as the condition is false. The condition may be checked at the beginning of the loop or at the end of loop.
Steps to Convert Content from a TXT or CSV File into Excel
- Open the Excel spreadsheet where you want to save the data and click the Data tab.
- In the Get External Data group, click From Text.
- Select the TXT or CSV file you want to convert and click Import.
- Select "Delimited".
- Click Next.
The ADO Recordset object is used to hold a set of records from a database table. A Recordset object consist of records and columns (fields). In ADO, this object is the most important and the one used most often to manipulate data from a database.
ADOdb is a database abstraction library for PHP, originally based on the same concept as Microsoft's ActiveX Data Objects. It allows developers to write applications in a consistent way regardless of the underlying database system storing the information.
A dynaset is a temporary set of data taken from one or more tables in the underlying file. A dynaset may be a query that was defined in an Access database, a single table, a subset of a table, or the result of joining multiple tables. A dynaset can be updated if the file is not locked or opened for ReadOnly.
In Visual Basic, a control array is a group of related controls in a Visual Basic form that share the same event handlers. Control arrays are always single-dimensional arrays, and controls can be added or deleted from control arrays at runtime.
The ADO (ActiveX Data Object) data control is the primary interface between a Visual Basic application and a database. It can be used without writing any code at all! Select Microsoft ADO Data Control, then click OK. The control will be added to your toolbox.
Records in a database or spreadsheet are usually called "rows". A record is a collection of fields, possibly of different data types, typically in a fixed number and sequence. The definition includes specifying the data type of each field and an identifier (name or label) by which it can be accessed.
How to work with recordset (Dao) in MS Access
- Create a new Recordset from a table or query in your database.
- Add a record to the Recordset using AddNew.
- Read values from a record.
- Edit values of the current record in the recordset.
- Make record current.
- Find records using criteria.
- Processing all records.
- Delete the current record.
Pointers identify the next record in the set and link the records together in a chain. There are three kinds of pointers: Next pointer (required pointer) points to the next record type in the set, regardless of whether the record type is an owner or a member of the set.
