Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / xsp / System / Web / UI / WebControls / FileUpload.cs / 1 / FileUpload.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- // namespace System.Web.UI.WebControls { using System.ComponentModel; using System.IO; using System.Security.Permissions; using System.Text; using System.Web.UI.HtmlControls; ////// Displays a text box and browse button that allows the user to select a file for uploading. /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [ControlValueProperty("FileBytes")] [ValidationProperty("FileName")] [Designer("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + AssemblyRef.SystemDesign)] public class FileUpload : WebControl { public FileUpload() : base(HtmlTextWriterTag.Input) { } ////// Gets the byte contents of the uploaded file. Needed for ControlParameters and templatized /// ImageFields. /// [ Bindable(true), Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public byte[] FileBytes { get { Stream fileStream = FileContent; if (fileStream != null && fileStream != Stream.Null) { long fileStreamLength = fileStream.Length; BinaryReader reader = new BinaryReader(fileStream); Byte[] completeImage = null; if (fileStreamLength > Int32.MaxValue) { throw new HttpException(SR.GetString(SR.FileUpload_StreamTooLong)); } if (!fileStream.CanSeek) { throw new HttpException(SR.GetString(SR.FileUpload_StreamNotSeekable)); } int currentStreamPosition = (int)fileStream.Position; int fileStreamIntLength = (int)fileStreamLength; try { fileStream.Seek(0, SeekOrigin.Begin); completeImage = reader.ReadBytes(fileStreamIntLength); } finally { // Don't close or dispose of the BinaryReader because doing so would close the stream. // We want to put the stream back to the original position in case this getter is called again // and the stream supports seeking, the bytes will be returned again. fileStream.Seek(currentStreamPosition, SeekOrigin.Begin); } if (completeImage.Length != fileStreamIntLength) { throw new HttpException(SR.GetString(SR.FileUpload_StreamLengthNotReached)); } return completeImage; } return new byte[0]; } } ////// Gets the contents of the uploaded file. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public Stream FileContent { get { HttpPostedFile f = PostedFile; if (f != null) { return PostedFile.InputStream; } return Stream.Null; } } ////// The name of the file on the client's computer, not including the path. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string FileName { get { HttpPostedFile postedFile = PostedFile; string fileName = string.Empty; if (postedFile != null) { string fullFileName = postedFile.FileName; try { // Some browsers (IE 6, Netscape 4) return the fully-qualified filename, // like "C:\temp\foo.txt". The application writer is probably not interested // in the client path, so we just return the filename part. fileName = Path.GetFileName(fullFileName); } catch { fileName = fullFileName; } } return fileName; } } ////// Whether or not a file was uploaded. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public bool HasFile { get { HttpPostedFile f = PostedFile; if (f != null) { // Unfortunately returns false if a 0-byte file was uploaded, since we see a 0-byte // file if the user entered nothing, an invalid filename, or a valid filename // of a 0-byte file. We feel this scenario is uncommon. return (f.ContentLength > 0); } return false; } } ////// Provides access to the underlying HttpPostedFile. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public HttpPostedFile PostedFile { get { if (Page != null && Page.IsPostBack) { return Context.Request.Files[UniqueID]; } return null; } } protected override void AddAttributesToRender(HtmlTextWriter writer) { writer.AddAttribute(HtmlTextWriterAttribute.Type, "file"); string uniqueID = UniqueID; if (uniqueID != null) { writer.AddAttribute(HtmlTextWriterAttribute.Name, uniqueID); } base.AddAttributesToRender(writer); } // protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); HtmlForm form = Page.Form; if (form != null && form.Enctype.Length == 0) { form.Enctype = "multipart/form-data"; } } protected internal override void Render(HtmlTextWriter writer) { // Make sure we are in a form tag with runat=server. if (Page != null) { Page.VerifyRenderingInServerForm(this); } base.Render(writer); } ////// Initiates a utility method to save an uploaded file to disk. /// public void SaveAs(string filename) { HttpPostedFile f = PostedFile; if (f != null) { f.SaveAs(filename); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- // namespace System.Web.UI.WebControls { using System.ComponentModel; using System.IO; using System.Security.Permissions; using System.Text; using System.Web.UI.HtmlControls; ////// Displays a text box and browse button that allows the user to select a file for uploading. /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [ControlValueProperty("FileBytes")] [ValidationProperty("FileName")] [Designer("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + AssemblyRef.SystemDesign)] public class FileUpload : WebControl { public FileUpload() : base(HtmlTextWriterTag.Input) { } ////// Gets the byte contents of the uploaded file. Needed for ControlParameters and templatized /// ImageFields. /// [ Bindable(true), Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public byte[] FileBytes { get { Stream fileStream = FileContent; if (fileStream != null && fileStream != Stream.Null) { long fileStreamLength = fileStream.Length; BinaryReader reader = new BinaryReader(fileStream); Byte[] completeImage = null; if (fileStreamLength > Int32.MaxValue) { throw new HttpException(SR.GetString(SR.FileUpload_StreamTooLong)); } if (!fileStream.CanSeek) { throw new HttpException(SR.GetString(SR.FileUpload_StreamNotSeekable)); } int currentStreamPosition = (int)fileStream.Position; int fileStreamIntLength = (int)fileStreamLength; try { fileStream.Seek(0, SeekOrigin.Begin); completeImage = reader.ReadBytes(fileStreamIntLength); } finally { // Don't close or dispose of the BinaryReader because doing so would close the stream. // We want to put the stream back to the original position in case this getter is called again // and the stream supports seeking, the bytes will be returned again. fileStream.Seek(currentStreamPosition, SeekOrigin.Begin); } if (completeImage.Length != fileStreamIntLength) { throw new HttpException(SR.GetString(SR.FileUpload_StreamLengthNotReached)); } return completeImage; } return new byte[0]; } } ////// Gets the contents of the uploaded file. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public Stream FileContent { get { HttpPostedFile f = PostedFile; if (f != null) { return PostedFile.InputStream; } return Stream.Null; } } ////// The name of the file on the client's computer, not including the path. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string FileName { get { HttpPostedFile postedFile = PostedFile; string fileName = string.Empty; if (postedFile != null) { string fullFileName = postedFile.FileName; try { // Some browsers (IE 6, Netscape 4) return the fully-qualified filename, // like "C:\temp\foo.txt". The application writer is probably not interested // in the client path, so we just return the filename part. fileName = Path.GetFileName(fullFileName); } catch { fileName = fullFileName; } } return fileName; } } ////// Whether or not a file was uploaded. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public bool HasFile { get { HttpPostedFile f = PostedFile; if (f != null) { // Unfortunately returns false if a 0-byte file was uploaded, since we see a 0-byte // file if the user entered nothing, an invalid filename, or a valid filename // of a 0-byte file. We feel this scenario is uncommon. return (f.ContentLength > 0); } return false; } } ////// Provides access to the underlying HttpPostedFile. /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public HttpPostedFile PostedFile { get { if (Page != null && Page.IsPostBack) { return Context.Request.Files[UniqueID]; } return null; } } protected override void AddAttributesToRender(HtmlTextWriter writer) { writer.AddAttribute(HtmlTextWriterAttribute.Type, "file"); string uniqueID = UniqueID; if (uniqueID != null) { writer.AddAttribute(HtmlTextWriterAttribute.Name, uniqueID); } base.AddAttributesToRender(writer); } // protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); HtmlForm form = Page.Form; if (form != null && form.Enctype.Length == 0) { form.Enctype = "multipart/form-data"; } } protected internal override void Render(HtmlTextWriter writer) { // Make sure we are in a form tag with runat=server. if (Page != null) { Page.VerifyRenderingInServerForm(this); } base.Render(writer); } ////// Initiates a utility method to save an uploaded file to disk. /// public void SaveAs(string filename) { HttpPostedFile f = PostedFile; if (f != null) { f.SaveAs(filename); } } } } // 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
- While.cs
- CaseInsensitiveHashCodeProvider.cs
- ArraySegment.cs
- GridToolTip.cs
- Visual.cs
- FacetEnabledSchemaElement.cs
- Condition.cs
- EventSetter.cs
- GlobalAclOperationRequirement.cs
- RevocationPoint.cs
- CultureInfoConverter.cs
- PrinterResolution.cs
- DeclaredTypeElement.cs
- Sql8ExpressionRewriter.cs
- RegexRunnerFactory.cs
- ExpandCollapsePattern.cs
- CustomSignedXml.cs
- TagElement.cs
- ListViewItem.cs
- TableCellAutomationPeer.cs
- AttachmentCollection.cs
- ToolStripCollectionEditor.cs
- TypeNameConverter.cs
- ValueOfAction.cs
- GeneralTransform3DTo2D.cs
- Formatter.cs
- XmlSchemaSimpleTypeRestriction.cs
- ProcessModelInfo.cs
- ObjectQueryState.cs
- ViewKeyConstraint.cs
- DataControlExtensions.cs
- EntityDataSourceContainerNameConverter.cs
- FontUnit.cs
- rsa.cs
- OpCopier.cs
- StateWorkerRequest.cs
- MeasurementDCInfo.cs
- UnaryNode.cs
- mediaeventshelper.cs
- ToolStripPanel.cs
- TreeNodeBinding.cs
- WriteableBitmap.cs
- PropertyGeneratedEventArgs.cs
- UnionExpr.cs
- VerticalAlignConverter.cs
- XamlGridLengthSerializer.cs
- SerializationSectionGroup.cs
- VirtualPathProvider.cs
- DataSet.cs
- ProxyFragment.cs
- Button.cs
- AttachedPropertyBrowsableForChildrenAttribute.cs
- ScriptHandlerFactory.cs
- TdsParserStateObject.cs
- FrugalList.cs
- XmlEnumAttribute.cs
- KeyboardEventArgs.cs
- RectValueSerializer.cs
- MaskDescriptor.cs
- ImageKeyConverter.cs
- DataChangedEventManager.cs
- WindowPattern.cs
- CompilationSection.cs
- MutexSecurity.cs
- ArglessEventHandlerProxy.cs
- ReadOnlyNameValueCollection.cs
- EdmComplexPropertyAttribute.cs
- ExpandedWrapper.cs
- WebHttpBindingElement.cs
- CultureTable.cs
- DBCSCodePageEncoding.cs
- OrderablePartitioner.cs
- CssStyleCollection.cs
- WebUtil.cs
- TransactionFlowOption.cs
- Executor.cs
- HttpBindingExtension.cs
- ProtocolsSection.cs
- CodeBlockBuilder.cs
- OutputScopeManager.cs
- SafeTimerHandle.cs
- ValidationSummary.cs
- RectAnimationUsingKeyFrames.cs
- CompositeFontParser.cs
- DES.cs
- NodeFunctions.cs
- SqlInternalConnectionSmi.cs
- SignerInfo.cs
- SimpleTypeResolver.cs
- StylusButtonEventArgs.cs
- BinaryHeap.cs
- WindowsImpersonationContext.cs
- ProtocolsSection.cs
- CodeActivity.cs
- ContentPlaceHolderDesigner.cs
- PaintValueEventArgs.cs
- UInt16Storage.cs
- counter.cs
- _TransmitFileOverlappedAsyncResult.cs
- BitmapEffectvisualstate.cs