/// <include file='doc\OpenFileDialog.uex' path='docs/doc[@for="OpenFileDialog.RunFileDialog"]/*' />
/// <devdoc>
/// Displays a file open dialog.
/// </devdoc>
/// <internalonly/>
internal override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
//We have already done the demand in EnsureFileDialogPermission but it doesn't hurt to do it again
Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded in OpenFileDialog.RunFileDialog");
IntSecurity.FileDialogOpenFile.Demand();
bool result = UnsafeNativeMethods.GetOpenFileName(ofn);
if (!result)
{
// Something may have gone wrong - check for error condition
//
int errorCode = SafeNativeMethods.CommDlgExtendedError();
switch (errorCode)
{
case NativeMethods.FNERR_INVALIDFILENAME:
throw new InvalidOperationException(SR.GetString(SR.FileDialogInvalidFileName, FileName));
case NativeMethods.FNERR_SUBCLASSFAILURE:
throw new InvalidOperationException(SR.GetString(SR.FileDialogSubLassFailure));
case NativeMethods.FNERR_BUFFERTOOSMALL:
throw new InvalidOperationException(SR.GetString(SR.FileDialogBufferTooSmall));
}
}
return(result);
}
/// <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.RunDialog"]/*' />
/// <devdoc>
/// Implements running of a file dialog.
/// </devdoc>
/// <internalonly/>
protected override bool RunDialog(IntPtr hWndOwner)
{
NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
NativeMethods.OPENFILENAME_I ofn = new NativeMethods.OPENFILENAME_I();
try {
charBuffer = CharBuffer.CreateBuffer(FILEBUFSIZE);
if (fileNames != null)
{
charBuffer.PutString(fileNames[0]);
}
ofn.lStructSize = Marshal.SizeOf(typeof(NativeMethods.OPENFILENAME_I));
// SECREVIEW : Assert environment so that we can determine
// : the platform that we are running on. We only
// : use the information to change the style of
// : dialog, so it is safe.
//
IntSecurity.UnrestrictedEnvironment.Assert();
try {
// Degrade to the older style dialog if we're not on Win2K.
// We do this by setting the struct size to a different value
//
if (Environment.OSVersion.Platform != System.PlatformID.Win32NT ||
Environment.OSVersion.Version.Major < 5)
{
ofn.lStructSize = 0x4C;
}
}
finally {
CodeAccessPermission.RevertAssert();
}
ofn.hwndOwner = hWndOwner;
ofn.hInstance = Instance;
ofn.lpstrFilter = MakeFilterString(filter);
ofn.nFilterIndex = filterIndex;
ofn.lpstrFile = charBuffer.AllocCoTaskMem();
ofn.nMaxFile = FILEBUFSIZE;
ofn.lpstrInitialDir = initialDir;
ofn.lpstrTitle = title;
ofn.Flags = Options | (NativeMethods.OFN_EXPLORER | NativeMethods.OFN_ENABLEHOOK | NativeMethods.OFN_ENABLESIZING);
ofn.lpfnHook = hookProcPtr;
ofn.FlagsEx = NativeMethods.OFN_USESHELLITEM;
if (defaultExt != null && AddExtension)
{
ofn.lpstrDefExt = defaultExt;
}
return(RunFileDialog(ofn));
}
finally {
charBuffer = null;
if (ofn.lpstrFile != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ofn.lpstrFile);
}
}
}
internal override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
System.Windows.Forms.IntSecurity.FileDialogSaveFile.Demand();
bool saveFileName = System.Windows.Forms.UnsafeNativeMethods.GetSaveFileName(ofn);
if (!saveFileName && (SafeNativeMethods.CommDlgExtendedError() == 0x3002))
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("FileDialogInvalidFileName", new object[] { base.FileName }));
}
return(saveFileName);
}
private protected override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
bool result = UnsafeNativeMethods.GetSaveFileName(ofn);
if (!result)
{
// Something may have gone wrong - check for error condition
switch (Comdlg32.CommDlgExtendedError())
{
case Comdlg32.FNERR.INVALIDFILENAME:
throw new InvalidOperationException(string.Format(SR.FileDialogInvalidFileName, FileName));
}
}
return(result);
}
/// <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 ok = false;
try {
options = options & ~NativeMethods.OFN_READONLY |
ofn.Flags & NativeMethods.OFN_READONLY;
filterIndex = ofn.nFilterIndex;
charBuffer.PutCoTaskMem(ofn.lpstrFile);
if ((options & NativeMethods.OFN_ALLOWMULTISELECT) == 0)
{
fileNames = new string[] { charBuffer.GetString() }
}
;
else
{
fileNames = GetMultiselectFiles(charBuffer);
}
if (ProcessFileNames())
{
CancelEventArgs ceevent = new CancelEventArgs();
try {
OnFileOk(ceevent);
ok = !ceevent.Cancel;
}
catch (Exception e) {
Application.OnThreadException(e);
}
}
}
finally {
if (!ok)
{
options = saveOptions;
filterIndex = saveFilterIndex;
fileNames = saveFileNames;
}
}
return(ok);
}
private bool RunDialogOld(IntPtr hWndOwner)
{
NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
NativeMethods.OPENFILENAME_I ofn = new NativeMethods.OPENFILENAME_I();
try {
charBuffer = CharBuffer.CreateBuffer(FILEBUFSIZE);
if (fileNames != null)
{
charBuffer.PutString(fileNames[0]);
}
ofn.lStructSize = Marshal.SizeOf(typeof(NativeMethods.OPENFILENAME_I));
// Degrade to the older style dialog if we're not on Win2K.
// We do this by setting the struct size to a different value
//
if (Environment.OSVersion.Platform != System.PlatformID.Win32NT ||
Environment.OSVersion.Version.Major < 5)
{
ofn.lStructSize = 0x4C;
}
ofn.hwndOwner = hWndOwner;
ofn.hInstance = Instance;
ofn.lpstrFilter = MakeFilterString(filter, this.DereferenceLinks);
ofn.nFilterIndex = filterIndex;
ofn.lpstrFile = charBuffer.AllocCoTaskMem();
ofn.nMaxFile = FILEBUFSIZE;
ofn.lpstrInitialDir = initialDir;
ofn.lpstrTitle = title;
ofn.Flags = Options | (NativeMethods.OFN_EXPLORER | NativeMethods.OFN_ENABLEHOOK | NativeMethods.OFN_ENABLESIZING);
ofn.lpfnHook = hookProcPtr;
ofn.FlagsEx = NativeMethods.OFN_USESHELLITEM;
if (defaultExt != null && AddExtension)
{
ofn.lpstrDefExt = defaultExt;
}
//Security checks happen here
return(RunFileDialog(ofn));
}
finally {
charBuffer = null;
if (ofn.lpstrFile != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ofn.lpstrFile);
}
}
}
/// <include file='doc\SaveFileDialog.uex' path='docs/doc[@for="SaveFileDialog.RunFileDialog"]/*' />
/// <devdoc>
/// </devdoc>
/// <internalonly/>
internal override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
bool result = UnsafeNativeMethods.GetSaveFileName(ofn);
if (!result)
{
// Something may have gone wrong - check for error condition
//
int errorCode = SafeNativeMethods.CommDlgExtendedError();
switch (errorCode)
{
case NativeMethods.FNERR_INVALIDFILENAME:
throw new InvalidOperationException(string.Format(SR.FileDialogInvalidFileName, FileName));
}
}
return(result);
}
/// <summary>
/// Displays a file open dialog.
/// </summary>
private protected override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
bool result = UnsafeNativeMethods.GetOpenFileName(ofn);
if (!result)
{
// Something may have gone wrong - check for error condition
switch (Comdlg32.CommDlgExtendedError())
{
case Comdlg32.FNERR.INVALIDFILENAME:
throw new InvalidOperationException(string.Format(SR.FileDialogInvalidFileName, FileName));
case Comdlg32.FNERR.SUBCLASSFAILURE:
throw new InvalidOperationException(SR.FileDialogSubLassFailure);
case Comdlg32.FNERR.BUFFERTOOSMALL:
throw new InvalidOperationException(SR.FileDialogBufferTooSmall);
}
}
return(result);
}
internal override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
System.Windows.Forms.IntSecurity.FileDialogOpenFile.Demand();
bool openFileName = System.Windows.Forms.UnsafeNativeMethods.GetOpenFileName(ofn);
if (!openFileName)
{
switch (SafeNativeMethods.CommDlgExtendedError())
{
case 0x3001:
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("FileDialogSubLassFailure"));
case 0x3002:
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("FileDialogInvalidFileName", new object[] { base.FileName }));
case 0x3003:
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("FileDialogBufferTooSmall"));
}
}
return(openFileName);
}
/// <include file='doc\OpenFileDialog.uex' path='docs/doc[@for="OpenFileDialog.RunFileDialog"]/*' />
/// <devdoc>
/// Displays a file open dialog.
/// </devdoc>
/// <internalonly/>
internal override bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn)
{
bool result = UnsafeNativeMethods.GetOpenFileName(ofn);
if (!result)
{
// Something may have gone wrong - check for error condition
//
int errorCode = SafeNativeMethods.CommDlgExtendedError();
switch (errorCode)
{
case NativeMethods.FNERR_INVALIDFILENAME:
throw new InvalidOperationException(SR.GetString(SR.FileDialogInvalidFileName, FileName));
case NativeMethods.FNERR_SUBCLASSFAILURE:
throw new InvalidOperationException(SR.GetString(SR.FileDialogSubLassFailure));
case NativeMethods.FNERR_BUFFERTOOSMALL:
throw new InvalidOperationException(SR.GetString(SR.FileDialogBufferTooSmall));
}
}
return(result);
}
public static extern bool GetSaveFileName([In, Out] NativeMethods.OPENFILENAME_I ofn);
/// <include file='doc\FileDialog.uex' path='docs/doc[@for="FileDialog.RunFileDialog"]/*' /> /// <devdoc> /// Implements the actual call to GetOPENFILENAME_I or GetSaveFileName. /// </devdoc> /// <internalonly/> internal abstract bool RunFileDialog(NativeMethods.OPENFILENAME_I ofn);
protected override IntPtr HookProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam)
{
if (msg == NativeMethods.WM_NOTIFY)
{
dialogHWnd = UnsafeNativeMethods.GetParent(new HandleRef(null, hWnd));
try {
UnsafeNativeMethods.OFNOTIFY notify = (UnsafeNativeMethods.OFNOTIFY)UnsafeNativeMethods.PtrToStructure(lparam, typeof(UnsafeNativeMethods.OFNOTIFY));
switch (notify.hdr_code)
{
case -601: /* CDN_INITDONE */
MoveToScreenCenter(dialogHWnd);
break;
case -602: /* CDN_SELCHANGE */
NativeMethods.OPENFILENAME_I ofn = (NativeMethods.OPENFILENAME_I)UnsafeNativeMethods.PtrToStructure(notify.lpOFN, typeof(NativeMethods.OPENFILENAME_I));
// Get the buffer size required to store the selected file names.
int sizeNeeded = (int)UnsafeNativeMethods.SendMessage(new HandleRef(this, dialogHWnd), 1124 /*CDM_GETSPEC*/, System.IntPtr.Zero, System.IntPtr.Zero);
if (sizeNeeded > ofn.nMaxFile)
{
// A bigger buffer is required.
try {
int newBufferSize = sizeNeeded + (FILEBUFSIZE / 4);
// Allocate new buffer
CharBuffer charBufferTmp = CharBuffer.CreateBuffer(newBufferSize);
IntPtr newBuffer = charBufferTmp.AllocCoTaskMem();
// Free old buffer
Marshal.FreeCoTaskMem(ofn.lpstrFile);
// Substitute buffer
ofn.lpstrFile = newBuffer;
ofn.nMaxFile = newBufferSize;
this.charBuffer = charBufferTmp;
Marshal.StructureToPtr(ofn, notify.lpOFN, true);
Marshal.StructureToPtr(notify, lparam, true);
}
catch {
// intentionaly not throwing here.
}
}
this.ignoreSecondFileOkNotification = false;
break;
case -604: /* CDN_SHAREVIOLATION */
// See VS Whidbey 95342. When the selected file is locked for writing,
// we get this notification followed by *two* CDN_FILEOK notifications.
this.ignoreSecondFileOkNotification = true; // We want to ignore the second CDN_FILEOK
this.okNotificationCount = 0; // to avoid a second prompt by PromptFileOverwrite.
break;
case -606: /* CDN_FILEOK */
if (this.ignoreSecondFileOkNotification)
{
// We got a CDN_SHAREVIOLATION notification and want to ignore the second CDN_FILEOK notification
if (this.okNotificationCount == 0)
{
this.okNotificationCount = 1; // This one is the first and is all right.
}
else
{
// This is the second CDN_FILEOK, so we want to ignore it.
this.ignoreSecondFileOkNotification = false;
UnsafeNativeMethods.SetWindowLong(new HandleRef(null, hWnd), 0, new HandleRef(null, NativeMethods.InvalidIntPtr));
return(NativeMethods.InvalidIntPtr);
}
}
if (!DoFileOk(notify.lpOFN))
{
UnsafeNativeMethods.SetWindowLong(new HandleRef(null, hWnd), 0, new HandleRef(null, NativeMethods.InvalidIntPtr));
return(NativeMethods.InvalidIntPtr);
}
break;
}
}
catch {
if (dialogHWnd != IntPtr.Zero)
{
UnsafeNativeMethods.EndDialog(new HandleRef(this, dialogHWnd), IntPtr.Zero);
}
throw;
}
}
return(IntPtr.Zero);
}
/// <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);
}
private bool RunDialogOld(IntPtr hWndOwner)
{
NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
NativeMethods.OPENFILENAME_I ofn = new NativeMethods.OPENFILENAME_I();
try {
charBuffer = CharBuffer.CreateBuffer(FILEBUFSIZE);
if (fileNames != null) {
charBuffer.PutString(fileNames[0]);
}
ofn.lStructSize = Marshal.SizeOf(typeof(NativeMethods.OPENFILENAME_I));
// Degrade to the older style dialog if we're not on Win2K.
// We do this by setting the struct size to a different value
//
if (Environment.OSVersion.Platform != System.PlatformID.Win32NT ||
Environment.OSVersion.Version.Major < 5) {
ofn.lStructSize = 0x4C;
}
ofn.hwndOwner = hWndOwner;
ofn.hInstance = Instance;
ofn.lpstrFilter = MakeFilterString(filter, this.DereferenceLinks);
ofn.nFilterIndex = filterIndex;
ofn.lpstrFile = charBuffer.AllocCoTaskMem();
ofn.nMaxFile = FILEBUFSIZE;
ofn.lpstrInitialDir = initialDir;
ofn.lpstrTitle = title;
ofn.Flags = Options | (NativeMethods.OFN_EXPLORER | NativeMethods.OFN_ENABLEHOOK | NativeMethods.OFN_ENABLESIZING);
ofn.lpfnHook = hookProcPtr;
ofn.FlagsEx = NativeMethods.OFN_USESHELLITEM;
if (defaultExt != null && AddExtension) {
ofn.lpstrDefExt = defaultExt;
}
//Security checks happen here
return RunFileDialog(ofn);
}
finally {
charBuffer = null;
if (ofn.lpstrFile != IntPtr.Zero) {
Marshal.FreeCoTaskMem(ofn.lpstrFile);
}
}
}
