FileSystem::FreeFile Method ()
.NET Framework (current version)
Returns an Integer value that represents the next file number available for use by the FileOpen function.
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)
Return Value
Type: System::Int32Returns an Integer value that represents the next file number available for use by the FileOpen function.
| Exception | Condition |
|---|---|
| IOException | More than 255 files are in use. |
Use FreeFile to supply a file number that is not already being used.
This example uses the FreeFile function to return the next available file number. Five files are opened for output within the loop, and some sample data is written to each.
Dim count As Integer Dim fileNumber As Integer For count = 1 To 5 fileNumber = FreeFile() FileOpen(fileNumber, "TEST" & count & ".TXT", OpenMode.Output) PrintLine(fileNumber, "This is a sample.") FileClose(fileNumber) Next
.NET Framework
Available since 1.1
Available since 1.1
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