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
- PrefixQName.cs
- DbReferenceCollection.cs
- DataGridViewRowDividerDoubleClickEventArgs.cs
- CategoryGridEntry.cs
- StatusBarItemAutomationPeer.cs
- SecurityException.cs
- EndpointInfo.cs
- TypeConverterHelper.cs
- MessageFormatterConverter.cs
- CompModSwitches.cs
- HierarchicalDataSourceControl.cs
- BlockCollection.cs
- HttpCapabilitiesBase.cs
- WindowsTitleBar.cs
- JoinTreeNode.cs
- Int32Collection.cs
- ProfileService.cs
- CommandBindingCollection.cs
- NGCSerializationManager.cs
- Schema.cs
- LingerOption.cs
- MoveSizeWinEventHandler.cs
- DesignerActionUIService.cs
- FileRecordSequenceCompletedAsyncResult.cs
- CriticalFinalizerObject.cs
- DesignerWebPartChrome.cs
- SoapExtensionReflector.cs
- XmlLangPropertyAttribute.cs
- IdentityHolder.cs
- CallTemplateAction.cs
- ToolStripOverflowButton.cs
- SrgsText.cs
- UnsafeNativeMethods.cs
- Compensation.cs
- NTAccount.cs
- ToolStripButton.cs
- ListBase.cs
- HtmlShimManager.cs
- CTreeGenerator.cs
- GridViewHeaderRowPresenter.cs
- XmlTextEncoder.cs
- DeclarativeCatalogPart.cs
- ToolboxItemSnapLineBehavior.cs
- EnumUnknown.cs
- DbExpressionRules.cs
- LightweightCodeGenerator.cs
- EtwTrace.cs
- Models.cs
- XPathAncestorIterator.cs
- DataTable.cs
- DBSchemaTable.cs
- SQLInt32.cs
- AssemblySettingAttributes.cs
- TableRow.cs
- Event.cs
- FontConverter.cs
- Slider.cs
- HttpListenerContext.cs
- InplaceBitmapMetadataWriter.cs
- Component.cs
- QilLiteral.cs
- CustomPopupPlacement.cs
- Stroke.cs
- SettingsAttributes.cs
- ToolStripRenderEventArgs.cs
- DocumentReference.cs
- ThousandthOfEmRealDoubles.cs
- UnionCodeGroup.cs
- ViewCellSlot.cs
- ListSortDescription.cs
- GestureRecognizer.cs
- DetailsViewInsertEventArgs.cs
- NotImplementedException.cs
- PropertyGridCommands.cs
- XPathScanner.cs
- JsonEnumDataContract.cs
- DoubleStorage.cs
- FormClosingEvent.cs
- UserControlCodeDomTreeGenerator.cs
- Point3DCollection.cs
- NameTable.cs
- TableLayoutColumnStyleCollection.cs
- SiteMapSection.cs
- ResourceDisplayNameAttribute.cs
- BrowserDefinition.cs
- SchemaType.cs
- Missing.cs
- AutomationPropertyInfo.cs
- DocumentXmlWriter.cs
- Unit.cs
- SoapEnumAttribute.cs
- SafeRightsManagementHandle.cs
- OrderedDictionary.cs
- ConfigurationPropertyCollection.cs
- TreeNode.cs
- UnicodeEncoding.cs
- RelationshipNavigation.cs
- ControlAdapter.cs
- VariableValue.cs
- UndoEngine.cs