MemoryToFile (Function)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

Help

WLanguage

Managing databases

Managing 3-tier architecture

WLanguage functions

MemoryToFile

Presentation

See also

FileToMemory (Function)

MemoryToFile (Function)

In french: MémoireVersFichier

Not available with this kind of connection

Automatically initializes the memory value of the items for the current data file record with the values of the members:

of a structure.
of a class.
Versions 17 and later
of an advanced type.
New in version 17
of an advanced type.
of an advanced type.

Remark: MemoryToFile cannot be used to write to the data file: the variables of the data file items can only be updated (i.e variables of the record loaded in memory). To modify the records, you must use HAdd, HModify, HWrite, etc.

Versions 15 and later

This function is now available for Java applications.

This function is now available for PHP sites.

This function is now available for Android applications.

New in version 15

This function is now available for Java applications.

This function is now available for PHP sites.

This function is now available for Android applications.

This function is now available for Java applications.

This function is now available for PHP sites.

This function is now available for Android applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Android widget mode.

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Android widget mode.

This function is now available in Windows Store apps mode.

This function is now available in Android widget mode.

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Syntax

MemoryToFile(<Name of Structure or Class> , <File name>)

<Name of Structure or Class>: Structure or Class variable

Name of the structure or name of the class containing the values of items.

<File name>: Character string

Name of the data file to which the linked items belong.

Remarks

If a member of the structure or class is named like an item of the HFSQL data file, the value of the member is copied into the item in memory. The name of the member must contain no prefix. The case and the accented characters are ignored when comparing the name of items and the names of members.
If an HFSQL item has no member in the class or in the structure, its value is not modified: no copy is performed. To initialize the value of the HFSQL items before the call to MemoryToFile, use HReset.

Component: wd270vm.dll