File Operation using WinAPI in Dynamics Ax

Finding files with WinAPI

Axapta’s WinAPI class has a bunch of static methods to handle files. The code example below shows how to utilize some of these methods to find files.

The two methods used to fetch all files matching the search criteria are findFirstFile() and findNextFile(). Don’t forget to clean up after yourself with findClose().

The code also uses three different find methods:

*
fileExists(_name) returns true, if _name is an existing file
*
folderExists(_name) returns true, if _name is an existing file or folder
*
pathExists(_name) returns true, if _name is an existing folder

The example uses the infolog for output. As with any infolog beware of performance and limitation to 10.000 lines.


static void Test_WINAPI(Args _args)
{

#File

FileName fullFileName(FileName _path, FileName _fileName)
{
FileName pathName;
FileName fileName;
FileName fileExtension;
;
[pathName,fileName,fileExtension] = fileNameSplit(_fileName);
return _path + '\\' + fileName + fileExtension;
}

void findFiles(FileName _path,
FileName _fileName,
boolean _inclSubDir = true,
FileName _prefix = fullFileName(_path,_fileName))

{

FileName fileName;
int hdl;
;
setprefix(_prefix);
if (WinAPI::folderExists(_path))
{
[hdl,fileName] = WinApi::findFirstFile(fullFileName(_path,_fileName));
while (fileName)
{
if (WinAPI::fileExists(fullFileName(_path,fileName)))
info(fileName);
fileName = WinApi::findNextFile(hdl);
}
WinApi::findClose(hdl);
if (_inclSubDir)
{
[hdl, fileName] = WinAPI::findFirstFile(_path+'\\'+#AllFiles);
while (fileName)
{
if (strlwr(fileName) != strlwr(_fileName) &&
strlwr(fileName) != strlwr('.') &&
strlwr(fileName) != strlwr('..') &&
WinAPI::pathExists(fullFileName(_path,fileName)))

findFiles(fullFileName(_path,fileName), _fileName, _inclSubDir,
fileName);


fileName = WinApi::findNextFile(hdl);

}
WinApi::findClose(hdl);

}
}
}
findFiles('c:\\Program Files','*.doc');

}