Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / SaveFileDialog.cs / 2 / SaveFileDialog.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System; using CodeAccessPermission = System.Security.CodeAccessPermission; using System.IO; using System.Drawing; using System.Diagnostics.CodeAnalysis; using System.Security.Permissions; using System.ComponentModel; using System.Windows.Forms; using Microsoft.Win32; ////// /// [ Designer("System.Windows.Forms.Design.SaveFileDialogDesigner, " + AssemblyRef.SystemDesign), SRDescription(SR.DescriptionSaveFileDialog) ] public sealed class SaveFileDialog : FileDialog { ////// Represents /// a common dialog box that allows the user to specify options for saving a /// file. This class cannot be inherited. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(false), SRDescription(SR.SaveFileDialogCreatePrompt) ] public bool CreatePrompt { get { return GetOption(NativeMethods.OFN_CREATEPROMPT); } set { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogCustomization Demanded"); IntSecurity.FileDialogCustomization.Demand(); SetOption(NativeMethods.OFN_CREATEPROMPT, value); } } ////// Gets or sets a value indicating whether the dialog box prompts the user for /// permission to create a file if the user specifies a file that does not exist. /// ////// /// [ SRCategory(SR.CatBehavior), DefaultValue(true), SRDescription(SR.SaveFileDialogOverWritePrompt) ] public bool OverwritePrompt { get { return GetOption(NativeMethods.OFN_OVERWRITEPROMPT); } set { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogCustomization Demanded"); IntSecurity.FileDialogCustomization.Demand(); SetOption(NativeMethods.OFN_OVERWRITEPROMPT, value); } } ////// Gets or sets a value indicating whether the Save As dialog box displays a warning if the user specifies /// a file name that already exists. /// ////// /// [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 a local variable and not subject to race conditions. [SuppressMessage("Microsoft.Security", "CA2103:ReviewImperativeSecurity")] public Stream OpenFile() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogSaveFile Demanded"); IntSecurity.FileDialogSaveFile.Demand(); string filename = FileNamesInternal[0]; if (string.IsNullOrEmpty(filename)) 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 read/write access to the stream. // new FileIOPermission(FileIOPermissionAccess.AllAccess, IntSecurity.UnsafeGetFullPath(filename)).Assert(); try { s = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite); } finally { CodeAccessPermission.RevertAssert(); } return s; } ////// Opens the file with read/write permission selected by the user. /// ////// /// private bool PromptFileCreate(string fileName) { return MessageBoxWithFocusRestore(SR.GetString(SR.FileDialogCreatePrompt, fileName), DialogCaption, MessageBoxButtons.YesNo, MessageBoxIcon.Warning); } ////// Prompts the user with a ////// when a file is about to be created. This method is /// invoked when the CreatePrompt property is true and the specified file /// does not exist. A return value of false prevents the dialog from /// closing. /// /// /// private bool PromptFileOverwrite(string fileName) { return MessageBoxWithFocusRestore(SR.GetString(SR.FileDialogOverwritePrompt, fileName), DialogCaption, MessageBoxButtons.YesNo, MessageBoxIcon.Warning); } // If it's necessary to throw up a "This file exists, are you sure?" kind of // MessageBox, here's where we do it. // Return value is whether or not the user hit "okay". internal override bool PromptUserIfAppropriate(string fileName) { if (!base.PromptUserIfAppropriate(fileName)) { return false; } //Note: When we are using the Vista dialog mode we get two prompts (one from us and one from the OS) if we do this if ((options & NativeMethods.OFN_OVERWRITEPROMPT) != 0 && FileExists(fileName) && !this.UseVistaDialogInternal) { if (!PromptFileOverwrite(fileName)) { return false; } } if ((options & NativeMethods.OFN_CREATEPROMPT) != 0 && !FileExists(fileName)) { if (!PromptFileCreate(fileName)) { return false; } } return true; } ////// Prompts the user when a file is about to be overwritten. This method is /// invoked when the "overwritePrompt" property is true and the specified /// file already exists. A return value of false prevents the dialog from /// closing. /// /// ////// /// public override void Reset() { base.Reset(); SetOption(NativeMethods.OFN_OVERWRITEPROMPT, true); } internal override void EnsureFileDialogPermission() { Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "FileDialogSaveFile Demanded in SaveFileDialog.RunFileDialog"); IntSecurity.FileDialogSaveFile.Demand(); } ////// Resets all dialog box options to their default /// values. /// ////// /// ///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, "FileDialogSaveFile Demanded in SaveFileDialog.RunFileDialog"); IntSecurity.FileDialogSaveFile.Demand(); 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(SR.GetString(SR.FileDialogInvalidFileName, FileName)); } } return result; } internal override string[] ProcessVistaFiles(FileDialogNative.IFileDialog dialog) { FileDialogNative.IFileSaveDialog saveDialog = (FileDialogNative.IFileSaveDialog)dialog; FileDialogNative.IShellItem item; dialog.GetResult(out item); return new string[] { GetFilePathFromShellItem(item) }; } internal override FileDialogNative.IFileDialog CreateVistaDialog() { return new FileDialogNative.NativeFileSaveDialog(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EndpointDispatcherTable.cs
- ResourceManager.cs
- DataServiceHost.cs
- LinqDataSourceDeleteEventArgs.cs
- StoreAnnotationsMap.cs
- PeerNameRegistration.cs
- BindingObserver.cs
- EntityDesignerUtils.cs
- MessageBox.cs
- ValidatedControlConverter.cs
- OdbcConnection.cs
- ReadOnlyHierarchicalDataSourceView.cs
- SelectionChangedEventArgs.cs
- CreateUserErrorEventArgs.cs
- IResourceProvider.cs
- QueueProcessor.cs
- UpdateTranslator.cs
- TextElementCollection.cs
- RuntimeWrappedException.cs
- PathParser.cs
- List.cs
- OleDbDataReader.cs
- AffineTransform3D.cs
- SafeCoTaskMem.cs
- RawTextInputReport.cs
- CngKeyBlobFormat.cs
- ApplyHostConfigurationBehavior.cs
- ElementHostPropertyMap.cs
- StorageEndPropertyMapping.cs
- CanonicalFontFamilyReference.cs
- ServiceBuildProvider.cs
- QilLoop.cs
- RegexStringValidatorAttribute.cs
- SaveFileDialog.cs
- ClosableStream.cs
- AdornerDecorator.cs
- UIPropertyMetadata.cs
- BlockCollection.cs
- CacheSection.cs
- CatalogPart.cs
- ContentElement.cs
- ShaderEffect.cs
- CurrentTimeZone.cs
- StateWorkerRequest.cs
- ToolStripSettings.cs
- GlyphRunDrawing.cs
- HMACMD5.cs
- MembershipSection.cs
- WaitHandleCannotBeOpenedException.cs
- TheQuery.cs
- ExpressionVisitor.cs
- ApplicationServicesHostFactory.cs
- Serializer.cs
- CompilationUnit.cs
- Selection.cs
- XmlSchemaComplexContentRestriction.cs
- Odbc32.cs
- StylusPointCollection.cs
- DataBinder.cs
- httpserverutility.cs
- ConnectionStringSettingsCollection.cs
- RequestStatusBarUpdateEventArgs.cs
- xmlfixedPageInfo.cs
- TextDataBindingHandler.cs
- NameScopePropertyAttribute.cs
- CultureSpecificStringDictionary.cs
- StringValueConverter.cs
- DiscoveryExceptionDictionary.cs
- TemplateControlParser.cs
- XmlSerializerFactory.cs
- ReliableSessionElement.cs
- CursorConverter.cs
- keycontainerpermission.cs
- InstancePersistenceContext.cs
- dbenumerator.cs
- HelpOperationInvoker.cs
- TextProviderWrapper.cs
- ProfileSection.cs
- PropertyDescriptorGridEntry.cs
- PatternMatcher.cs
- DigestComparer.cs
- StrokeRenderer.cs
- _NativeSSPI.cs
- RequestCachePolicy.cs
- EntitySetDataBindingList.cs
- OdbcParameter.cs
- InternalBufferManager.cs
- Slider.cs
- Range.cs
- MetadataItem.cs
- HtmlPhoneCallAdapter.cs
- WebBaseEventKeyComparer.cs
- ApplicationFileParser.cs
- DataSourceCollectionBase.cs
- SingleStorage.cs
- ProcessModelSection.cs
- JournalNavigationScope.cs
- StaticSiteMapProvider.cs
- XmlSerializationReader.cs
- EntitySqlQueryCacheKey.cs