/// <include file='doc\FileDialog.uex' path='docs/doc[@for="FileDialog.DoFileOk"]/*' />
/// <devdoc>
/// Processes the CDN_FILEOK notification.
/// </devdoc>
private bool DoFileOk(IntPtr lpOFN)
{
NativeMethods.OPENFILENAME_I ofn = Marshal.PtrToStructure <NativeMethods.OPENFILENAME_I>(lpOFN);
int saveOptions = options;
int saveFilterIndex = filterIndex;
string[] saveFileNames = fileNames;
bool ok = false;
try {
options = options & ~NativeMethods.OFN_READONLY |
ofn.Flags & NativeMethods.OFN_READONLY;
filterIndex = ofn.nFilterIndex;
charBuffer.PutCoTaskMem(ofn.lpstrFile);
Thread.MemoryBarrier();
if ((options & NativeMethods.OFN_ALLOWMULTISELECT) == 0)
{
fileNames = new string[] { charBuffer.GetString() };
}
else
{
fileNames = GetMultiselectFiles(charBuffer);
}
if (ProcessFileNames())
{
CancelEventArgs ceevent = new CancelEventArgs();
if (NativeWindow.WndProcShouldBeDebuggable)
{
OnFileOk(ceevent);
ok = !ceevent.Cancel;
}
else
{
try
{
OnFileOk(ceevent);
ok = !ceevent.Cancel;
}
catch (Exception e)
{
Application.OnThreadException(e);
}
}
}
}
finally {
if (!ok)
{
Thread.MemoryBarrier();
fileNames = saveFileNames;
options = saveOptions;
filterIndex = saveFilterIndex;
}
}
return(ok);
}
/// <include file='doc\FileDialog.uex' path='docs/doc[@for="FileDialog.DoFileOk"]/*' />
/// <devdoc>
/// Processes the CDN_FILEOK notification.
/// </devdoc>
private bool DoFileOk(IntPtr lpOFN)
{
NativeMethods.OPENFILENAME_I ofn = (NativeMethods.OPENFILENAME_I)UnsafeNativeMethods.PtrToStructure(lpOFN, typeof(NativeMethods.OPENFILENAME_I));
int saveOptions = options;
int saveFilterIndex = filterIndex;
string[] saveFileNames = fileNames;
bool saveSecurityCheckFileNames = securityCheckFileNames;
bool ok = false;
try {
options = options & ~NativeMethods.OFN_READONLY |
ofn.Flags & NativeMethods.OFN_READONLY;
filterIndex = ofn.nFilterIndex;
charBuffer.PutCoTaskMem(ofn.lpstrFile);
// We are filling in the file names list with secure
// data. Any access to this list now will require
// a security demand. We set this bit before actually
// setting the names; otherwise a thread ---- could
// expose them.
securityCheckFileNames = true;
Thread.MemoryBarrier();
if ((options & NativeMethods.OFN_ALLOWMULTISELECT) == 0)
{
fileNames = new string[] { charBuffer.GetString() };
}
else
{
fileNames = GetMultiselectFiles(charBuffer);
}
if (ProcessFileNames())
{
CancelEventArgs ceevent = new CancelEventArgs();
if (NativeWindow.WndProcShouldBeDebuggable)
{
OnFileOk(ceevent);
ok = !ceevent.Cancel;
}
else
{
try
{
OnFileOk(ceevent);
ok = !ceevent.Cancel;
}
catch (Exception e)
{
Application.OnThreadException(e);
}
}
}
}
finally {
if (!ok)
{
securityCheckFileNames = saveSecurityCheckFileNames;
Thread.MemoryBarrier();
fileNames = saveFileNames;
options = saveOptions;
filterIndex = saveFilterIndex;
}
}
return(ok);
}
