Binary file handling in vb6

The code in basConvert replaces the now superseded basByteUtils with better and faster dynamic arrays. The source code to these three files is in binaryutils.

For more information or to comment on this page, please send us a message. Print 1, MyBool ; " is a Boolean value". Print 1, MyDate ; " is a date". Print 1, MyNull ; " is a null value".

Print 1, MyError ; " is an error value". Write Statement - Writes data to a sequential file. Write filenumber, [outputlist]. One or more comma-delimited numeric expressions or string expressions to write to a file. Write 1, "Hello World", ' Write comma-delimited data. Write 1, ' Write blank line. Date literals are. Null data is written as NULL.

Write 1, MyBool ; " is a Boolean value". Write 1, MyDate ; " is a date". Write 1, MyNull ; " is a null value". Write 1, MyError ; " is an error value". If unspecified, the file is opened for Random access. Use the FreeFile function to obtain the next available file number. For files opened for random access, this value is the record length. For sequential files, this value is the number of characters buffered.

If the file specified by pathname doesn't exist, it is created when a file is opened for Append, Binary, Output, or Random modes. If the file is already opened by another process and the specified type of access is not allowed, the Open operation fails and an error occurs.

The Len clause is ignored if mode is Binary. Important In Binary, Input, and Random modes, you can open a file using a different file number without first closing the file. In Append and Output modes, you must close a file before opening it with a different file number.

Close 1 ' Close before reopening in another mode. This example opens the file in Binary mode for writing operations only. The following example opens the file in Random mode. The file contains records of the user-defined type Record. Type Record ' Define user-defined type. ID As Integer. End Type. Close 1. This code example opens the file for sequential output; any process can read or write to file.

Why not write for us? Or you could submit an event or a user group in your area. Alternatively just tell us what you think! We've got automatic conversion tools to convert C to VB. NET , VB. NET to C. However, the fact that it is 8 bytes long is what is important for the next step: "Get", when used on a file opened For Binary, will return a number of bytes equal to the length of the string used as its third argument.

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