Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / HtmlControls / HtmlInputFile.cs / 1 / HtmlInputFile.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * HtmlInputFile.cs * * Copyright (c) 2000 Microsoft Corporation */ namespace System.Web.UI.HtmlControls { using System; using System.Collections; using System.Collections.Specialized; using System.ComponentModel; using System.Globalization; using System.Web; using System.Web.UI; using System.Security.Permissions; ////// /// The /// < [ ValidationProperty("Value") ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class HtmlInputFile : HtmlInputControl, IPostBackDataHandler { /* * Creates an intrinsic Html INPUT type=file control. */ ///class defines the /// methods, properties, and events for the control. This class allows /// programmatic access to the HTML <input type= file> element on the server. /// It provides access to the stream, as well as a useful SaveAs functionality /// provided by the /// property. /// /// public HtmlInputFile() : base("file") { } /* * Accept type property. */ ///Initializes a new instance of the ///class. /// [ WebCategory("Behavior"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string Accept { get { string s = Attributes["accept"]; return((s != null) ? s : String.Empty); } set { Attributes["accept"] = MapStringAttributeToString(value); } } /* * The property for the maximum characters allowed. */ ////// Gets /// or sets a comma-separated list of MIME encodings that /// can be used to constrain the file types that the browser lets the user /// select. For example, to restrict the /// selection to images, the accept value image/* should be specified. /// ////// [ WebCategory("Behavior"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public int MaxLength { get { string s = Attributes["maxlength"]; return((s != null) ? Int32.Parse(s, CultureInfo.InvariantCulture) : -1); } set { Attributes["maxlength"] = MapIntegerAttributeToString(value); } } /* * PostedFile property. */ ////// Gets or sets the /// maximum length of the file path of the file to upload /// from the client machine. /// ////// [ WebCategory("Default"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public HttpPostedFile PostedFile { get { return Context.Request.Files[RenderedNameAttribute];} } /* * The property for the width in characters. */ ///Gets access to the uploaded file specified by a client. ////// [ WebCategory("Appearance"), DefaultValue(-1), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public int Size { get { string s = Attributes["size"]; return((s != null) ? Int32.Parse(s, CultureInfo.InvariantCulture) : -1); } set { Attributes["size"] = MapIntegerAttributeToString(value); } } // ASURT 122262 : The value property isn't submitted back to us when the a page // containing this control postsback, so required field validators are broken // (value would contain the empty string). To fix this, we return the filename. [ Browsable(false) ] public override string Value { get { HttpPostedFile postedFile = PostedFile; if (postedFile != null) { return postedFile.FileName; } return String.Empty; } set { // Throw here because setting the value on this tag has no effect on the // rendering behavior and since we're always returning the posted file's // filename, we don't want to get into a situation where the user // sets a value and does not get back that value. throw new NotSupportedException(SR.GetString(SR.Value_Set_Not_Supported, this.GetType().Name)); } } /* * Method of IPostBackDataHandler interface to process posted data. */ ///Gets or sets the width of the file-path text box that the /// browser displays when the ////// control is used on a page. bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) { return LoadPostData(postDataKey, postCollection); } protected virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection) { return false; } /* * Method of IPostBackDataHandler interface which is invoked whenever * posted data for a control has changed. RadioButton fires an * OnServerChange event. */ /// void IPostBackDataHandler.RaisePostDataChangedEvent() { RaisePostDataChangedEvent(); } protected virtual void RaisePostDataChangedEvent() { } /// /// protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); // ASURT 35328: use multipart encoding if no encoding is currently specified HtmlForm form = Page.Form; if (form != null && form.Enctype.Length == 0) { form.Enctype = "multipart/form-data"; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.Raises the ///event. This method uses event arguments /// to pass the event data to the control.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Boolean.cs
- securitycriticaldataClass.cs
- SoapAttributes.cs
- DataGridColumn.cs
- OleDbPermission.cs
- BufferAllocator.cs
- BezierSegment.cs
- StickyNote.cs
- ValidationError.cs
- FirstMatchCodeGroup.cs
- TabItemWrapperAutomationPeer.cs
- Timer.cs
- GridViewItemAutomationPeer.cs
- PerformanceCounterPermission.cs
- ToolStripDropDownButton.cs
- TrackingMemoryStream.cs
- TypeBuilder.cs
- ComplexPropertyEntry.cs
- MessageFault.cs
- XmlBindingWorker.cs
- QilCloneVisitor.cs
- ImmutableCollection.cs
- DependsOnAttribute.cs
- InitializingNewItemEventArgs.cs
- GeneralTransform2DTo3D.cs
- ActivityPreviewDesigner.cs
- MenuAdapter.cs
- CreateUserWizardAutoFormat.cs
- __TransparentProxy.cs
- AttachedPropertyBrowsableForTypeAttribute.cs
- AuthenticationManager.cs
- NetworkAddressChange.cs
- ProfileProvider.cs
- HWStack.cs
- OdbcStatementHandle.cs
- AlignmentYValidation.cs
- _LocalDataStore.cs
- DBNull.cs
- Propagator.cs
- XPathSelfQuery.cs
- ToolStripInSituService.cs
- GetRecipientRequest.cs
- X509Utils.cs
- SoapEnvelopeProcessingElement.cs
- TreeNode.cs
- SimpleBitVector32.cs
- StreamProxy.cs
- DocumentGridPage.cs
- SamlAuthenticationClaimResource.cs
- RsaSecurityToken.cs
- ContainerActivationHelper.cs
- DataGridDefaultColumnWidthTypeConverter.cs
- ProcessManager.cs
- PropertySourceInfo.cs
- ReadOnlyAttribute.cs
- SplitterPanel.cs
- LineMetrics.cs
- Attribute.cs
- InvokePatternIdentifiers.cs
- TypePresenter.xaml.cs
- XmlQualifiedName.cs
- SubordinateTransaction.cs
- PropertyDescriptorComparer.cs
- UIElement3D.cs
- SectionUpdates.cs
- SessionStateSection.cs
- ColumnCollection.cs
- XsdDateTime.cs
- SingleObjectCollection.cs
- Psha1DerivedKeyGenerator.cs
- PermissionToken.cs
- AspCompat.cs
- DecimalConstantAttribute.cs
- Reference.cs
- HMACSHA1.cs
- WinFormsUtils.cs
- HttpListenerException.cs
- GroupBoxRenderer.cs
- SizeAnimationUsingKeyFrames.cs
- OciHandle.cs
- HtmlEncodedRawTextWriter.cs
- BaseCodePageEncoding.cs
- ExceptionCollection.cs
- State.cs
- Types.cs
- NamespaceInfo.cs
- Odbc32.cs
- AutomationPattern.cs
- AttachedAnnotation.cs
- MatrixValueSerializer.cs
- DataSourceProvider.cs
- Exceptions.cs
- DrawingBrush.cs
- DateTimeFormatInfo.cs
- ViewGenerator.cs
- XamlClipboardData.cs
- EmissiveMaterial.cs
- UshortList2.cs
- DependencyPropertyValueSerializer.cs
- ProviderIncompatibleException.cs