Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / OpenFileDialog.cs / 5 / OpenFileDialog.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System; using System.Diagnostics.CodeAnalysis; using System.Drawing; using CodeAccessPermission = System.Security.CodeAccessPermission; using System.Security.Permissions; using System.IO; using System.ComponentModel; using Microsoft.Win32; ////// /// [SRDescription(SR.DescriptionOpenFileDialog)] public sealed class OpenFileDialog : FileDialog { ////// Represents a common dialog box /// that displays the control that allows the user to open a file. This class /// cannot be inherited. /// ////// /// [ DefaultValue(true), SRDescription(SR.OFDcheckFileExistsDescr) ] public override bool CheckFileExists { get { return base.CheckFileExists; } set { base.CheckFileExists = value; } } ////// Gets or sets a value indicating whether the dialog box displays a /// warning if the user specifies a file name that does not exist. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDmultiSelectDescr) ] public bool Multiselect { get { return GetOption(NativeMethods.OFN_ALLOWMULTISELECT); } set { SetOption(NativeMethods.OFN_ALLOWMULTISELECT, value); } } ////// Gets or sets a value /// indicating whether the dialog box allows multiple files to be selected. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDreadOnlyCheckedDescr) ] public bool ReadOnlyChecked { get { return GetOption(NativeMethods.OFN_READONLY); } set { SetOption(NativeMethods.OFN_READONLY, value); } } ////// Gets or sets a value indicating whether /// the read-only check box is selected. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDshowReadOnlyDescr) ] public bool ShowReadOnly { get { return !GetOption(NativeMethods.OFN_HIDEREADONLY); } set { SetOption(NativeMethods.OFN_HIDEREADONLY, !value); } } ////// Gets or sets a value indicating whether the dialog contains a read-only check box. /// ////// /// [SuppressMessage("Microsoft.Usage", "CA2208:InstantiateArgumentExceptionsCorrectly")] /// SECREVIEW: ReviewImperativeSecurity /// vulnerability to watch out for: A method uses imperative security and might be constructing the permission using state information or return values that can change while the demand is active. /// reason for exclude: filename is snapped directly at the beginning of the function. [SuppressMessage("Microsoft.Security", "CA2103:ReviewImperativeSecurity")] public Stream OpenFile() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded"); IntSecurity.FileDialogOpenFile.Demand(); string filename = FileNamesInternal[0]; if (filename == null || (filename.Length == 0)) throw new ArgumentNullException("FileName"); Stream s = null; // SECREVIEW : We demanded the FileDialog permission above, so it is safe // : to assert this here. Since the user picked the file, it // : is OK to give them readonly access to the stream. // new FileIOPermission(FileIOPermissionAccess.Read, IntSecurity.UnsafeGetFullPath(filename)).Assert(); try { s = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read); } finally { CodeAccessPermission.RevertAssert(); } return s; } ////// Opens the file selected by the user with read-only permission. The file /// attempted is specified by the ///property. /// /// /// public override void Reset() { base.Reset(); SetOption(NativeMethods.OFN_FILEMUSTEXIST, true); } internal override void EnsureFileDialogPermission() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded in OpenFileDialog.RunFileDialog"); IntSecurity.FileDialogOpenFile.Demand(); } ////// Resets all properties to their default values. /// ////// /// Displays a file open dialog. /// ///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; } internal override string[] ProcessVistaFiles(FileDialogNative.IFileDialog dialog) { FileDialogNative.IFileOpenDialog openDialog = (FileDialogNative.IFileOpenDialog)dialog; if (Multiselect) { FileDialogNative.IShellItemArray results; openDialog.GetResults(out results); uint count; results.GetCount(out count); string[] files = new string[count]; for (uint i = 0; i < count; ++i) { FileDialogNative.IShellItem item; results.GetItemAt(i, out item); files[unchecked((int)i)] = GetFilePathFromShellItem(item); } return files; } else { FileDialogNative.IShellItem item; openDialog.GetResult(out item); return new string[] { GetFilePathFromShellItem(item) }; } } internal override FileDialogNative.IFileDialog CreateVistaDialog() { return new FileDialogNative.NativeFileOpenDialog(); } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), SuppressMessage("Microsoft.Security", "CA2106:SecureAsserts") ] public string SafeFileName { get { new FileIOPermission(PermissionState.Unrestricted).Assert(); string fullPath = FileName; CodeAccessPermission.RevertAssert(); if (string.IsNullOrEmpty(fullPath)) { return ""; } string safePath = RemoveSensitivePathInformation(fullPath); return safePath; } } private static string RemoveSensitivePathInformation(string fullPath) { return System.IO.Path.GetFileName(fullPath); } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays"), SuppressMessage("Microsoft.Security", "CA2106:SecureAsserts") ] public string[] SafeFileNames { get { new FileIOPermission(PermissionState.Unrestricted).Assert(); string[] fullPaths = FileNames; CodeAccessPermission.RevertAssert(); if (null == fullPaths || 0 == fullPaths.Length) { return new string[0]; } string[] safePaths = new string[fullPaths.Length]; for (int i = 0; i < safePaths.Length; ++i) { safePaths[i] = RemoveSensitivePathInformation(fullPaths[i]); } return safePaths; } } internal override bool SettingsSupportVistaDialog { get { return base.SettingsSupportVistaDialog && !this.ShowReadOnly; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System; using System.Diagnostics.CodeAnalysis; using System.Drawing; using CodeAccessPermission = System.Security.CodeAccessPermission; using System.Security.Permissions; using System.IO; using System.ComponentModel; using Microsoft.Win32; ////// /// [SRDescription(SR.DescriptionOpenFileDialog)] public sealed class OpenFileDialog : FileDialog { ////// Represents a common dialog box /// that displays the control that allows the user to open a file. This class /// cannot be inherited. /// ////// /// [ DefaultValue(true), SRDescription(SR.OFDcheckFileExistsDescr) ] public override bool CheckFileExists { get { return base.CheckFileExists; } set { base.CheckFileExists = value; } } ////// Gets or sets a value indicating whether the dialog box displays a /// warning if the user specifies a file name that does not exist. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDmultiSelectDescr) ] public bool Multiselect { get { return GetOption(NativeMethods.OFN_ALLOWMULTISELECT); } set { SetOption(NativeMethods.OFN_ALLOWMULTISELECT, value); } } ////// Gets or sets a value /// indicating whether the dialog box allows multiple files to be selected. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDreadOnlyCheckedDescr) ] public bool ReadOnlyChecked { get { return GetOption(NativeMethods.OFN_READONLY); } set { SetOption(NativeMethods.OFN_READONLY, value); } } ////// Gets or sets a value indicating whether /// the read-only check box is selected. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.OFDshowReadOnlyDescr) ] public bool ShowReadOnly { get { return !GetOption(NativeMethods.OFN_HIDEREADONLY); } set { SetOption(NativeMethods.OFN_HIDEREADONLY, !value); } } ////// Gets or sets a value indicating whether the dialog contains a read-only check box. /// ////// /// [SuppressMessage("Microsoft.Usage", "CA2208:InstantiateArgumentExceptionsCorrectly")] /// SECREVIEW: ReviewImperativeSecurity /// vulnerability to watch out for: A method uses imperative security and might be constructing the permission using state information or return values that can change while the demand is active. /// reason for exclude: filename is snapped directly at the beginning of the function. [SuppressMessage("Microsoft.Security", "CA2103:ReviewImperativeSecurity")] public Stream OpenFile() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded"); IntSecurity.FileDialogOpenFile.Demand(); string filename = FileNamesInternal[0]; if (filename == null || (filename.Length == 0)) throw new ArgumentNullException("FileName"); Stream s = null; // SECREVIEW : We demanded the FileDialog permission above, so it is safe // : to assert this here. Since the user picked the file, it // : is OK to give them readonly access to the stream. // new FileIOPermission(FileIOPermissionAccess.Read, IntSecurity.UnsafeGetFullPath(filename)).Assert(); try { s = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read); } finally { CodeAccessPermission.RevertAssert(); } return s; } ////// Opens the file selected by the user with read-only permission. The file /// attempted is specified by the ///property. /// /// /// public override void Reset() { base.Reset(); SetOption(NativeMethods.OFN_FILEMUSTEXIST, true); } internal override void EnsureFileDialogPermission() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogOpenFile Demanded in OpenFileDialog.RunFileDialog"); IntSecurity.FileDialogOpenFile.Demand(); } ////// Resets all properties to their default values. /// ////// /// Displays a file open dialog. /// ///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; } internal override string[] ProcessVistaFiles(FileDialogNative.IFileDialog dialog) { FileDialogNative.IFileOpenDialog openDialog = (FileDialogNative.IFileOpenDialog)dialog; if (Multiselect) { FileDialogNative.IShellItemArray results; openDialog.GetResults(out results); uint count; results.GetCount(out count); string[] files = new string[count]; for (uint i = 0; i < count; ++i) { FileDialogNative.IShellItem item; results.GetItemAt(i, out item); files[unchecked((int)i)] = GetFilePathFromShellItem(item); } return files; } else { FileDialogNative.IShellItem item; openDialog.GetResult(out item); return new string[] { GetFilePathFromShellItem(item) }; } } internal override FileDialogNative.IFileDialog CreateVistaDialog() { return new FileDialogNative.NativeFileOpenDialog(); } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), SuppressMessage("Microsoft.Security", "CA2106:SecureAsserts") ] public string SafeFileName { get { new FileIOPermission(PermissionState.Unrestricted).Assert(); string fullPath = FileName; CodeAccessPermission.RevertAssert(); if (string.IsNullOrEmpty(fullPath)) { return ""; } string safePath = RemoveSensitivePathInformation(fullPath); return safePath; } } private static string RemoveSensitivePathInformation(string fullPath) { return System.IO.Path.GetFileName(fullPath); } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays"), SuppressMessage("Microsoft.Security", "CA2106:SecureAsserts") ] public string[] SafeFileNames { get { new FileIOPermission(PermissionState.Unrestricted).Assert(); string[] fullPaths = FileNames; CodeAccessPermission.RevertAssert(); if (null == fullPaths || 0 == fullPaths.Length) { return new string[0]; } string[] safePaths = new string[fullPaths.Length]; for (int i = 0; i < safePaths.Length; ++i) { safePaths[i] = RemoveSensitivePathInformation(fullPaths[i]); } return safePaths; } } internal override bool SettingsSupportVistaDialog { get { return base.SettingsSupportVistaDialog && !this.ShowReadOnly; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MetadataItemEmitter.cs
- TemplateBuilder.cs
- StreamReader.cs
- ArrayElementGridEntry.cs
- MultipleCopiesCollection.cs
- MutexSecurity.cs
- XmlSchemaAnyAttribute.cs
- PageBuildProvider.cs
- DataGridViewIntLinkedList.cs
- EnlistmentTraceIdentifier.cs
- activationcontext.cs
- ScrollData.cs
- WhitespaceRuleLookup.cs
- BamlLocalizationDictionary.cs
- DataDocumentXPathNavigator.cs
- CoreSwitches.cs
- ContainerSelectorActiveEvent.cs
- Events.cs
- FunctionQuery.cs
- ListItemParagraph.cs
- AttributeQuery.cs
- httpserverutility.cs
- ArcSegment.cs
- RuntimeConfigLKG.cs
- ValueTypeFixupInfo.cs
- Soap.cs
- CodeMethodReturnStatement.cs
- StorageTypeMapping.cs
- IdleTimeoutMonitor.cs
- UnaryExpressionHelper.cs
- EntityAdapter.cs
- DrawingContextDrawingContextWalker.cs
- PermissionAttributes.cs
- StylusPoint.cs
- BinaryObjectWriter.cs
- AsymmetricKeyExchangeFormatter.cs
- PeerReferralPolicy.cs
- WorkflowEnvironment.cs
- UniformGrid.cs
- Constants.cs
- ClrPerspective.cs
- AutoGeneratedField.cs
- mactripleDES.cs
- HtmlShimManager.cs
- SynchronizedInputHelper.cs
- BitmapDownload.cs
- ExclusiveTcpListener.cs
- UnsafeNativeMethods.cs
- ProfileGroupSettingsCollection.cs
- EventWaitHandle.cs
- TextTreeUndoUnit.cs
- SecureEnvironment.cs
- WhitespaceRule.cs
- ArgIterator.cs
- WindowsAltTab.cs
- DocumentGrid.cs
- Certificate.cs
- NegotiateStream.cs
- AttributeCollection.cs
- CodeCatchClauseCollection.cs
- MenuAdapter.cs
- Point.cs
- SslStream.cs
- ParameterElementCollection.cs
- WorkflowIdleBehavior.cs
- Simplifier.cs
- ComboBoxAutomationPeer.cs
- OrderedHashRepartitionEnumerator.cs
- PersistenceException.cs
- SchemeSettingElement.cs
- EventKeyword.cs
- TemplateKeyConverter.cs
- MatrixTransform3D.cs
- RuntimeResourceSet.cs
- ChildrenQuery.cs
- ScrollViewer.cs
- DigestTraceRecordHelper.cs
- StylusButtonCollection.cs
- FontCacheUtil.cs
- XmlStreamStore.cs
- WorkflowQueueInfo.cs
- OneOfScalarConst.cs
- streamingZipPartStream.cs
- TypeUtils.cs
- cookiecollection.cs
- ResourcesBuildProvider.cs
- XmlSerializer.cs
- LinkUtilities.cs
- DataGridViewUtilities.cs
- EnvelopeVersion.cs
- Path.cs
- TrustManager.cs
- Tablet.cs
- XmlDomTextWriter.cs
- _SSPISessionCache.cs
- DesignerTextViewAdapter.cs
- TextServicesManager.cs
- TextServicesCompartmentEventSink.cs
- KnownAssembliesSet.cs
- QueryCursorEventArgs.cs