Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / DataSourceViewSchemaConverter.cs / 1 / DataSourceViewSchemaConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.Design { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Globalization; using System.Runtime.InteropServices; using System.Web.UI; ////// /// [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)] public class DataSourceViewSchemaConverter : TypeConverter { ////// Provides design-time support for getting schema from an object /// ////// /// public DataSourceViewSchemaConverter() { } ////// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return false; } ////// Gets a value indicating whether this converter can /// convert an object in the given source type to the native type of the converter /// using the context. /// ////// /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value == null) { return String.Empty; } else if (value.GetType() == typeof(string)) { return (string)value; } throw GetConvertFromException(value); } ////// Converts the given object to the converter's native type. /// ////// /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { return GetStandardValues(context, null); } public virtual StandardValuesCollection GetStandardValues(ITypeDescriptorContext context, Type typeFilter) { string[] names = null; if (context != null) { IDataSourceViewSchemaAccessor schemaAccessor = context.Instance as IDataSourceViewSchemaAccessor; if (schemaAccessor != null) { IDataSourceViewSchema schema = schemaAccessor.DataSourceViewSchema as IDataSourceViewSchema; if (schema != null) { IDataSourceFieldSchema[] fields = schema.GetFields(); string[] tempNames = new string[fields.Length]; int fieldCount = 0; for (int i = 0; i < fields.Length; i++) { if ((typeFilter != null && fields[i].DataType == typeFilter) || typeFilter == null) { tempNames[fieldCount] = fields[i].Name; fieldCount++; } } names = new string[fieldCount]; Array.Copy(tempNames, names, fieldCount); } } if (names == null) { names = new string[0]; } Array.Sort(names, Comparer.Default); } return new StandardValuesCollection(names); } ////// Gets the fields present within the selected object's schema /// ////// /// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return false; } ////// Gets a value indicating whether the collection of standard values returned from /// ///is an exclusive /// list of possible values, using the specified context. /// /// /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { if ((context != null) && (context.Instance is IDataSourceViewSchemaAccessor)) { return true; } return false; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved./// Gets a value indicating whether this object supports a standard set of values /// that can be picked from a list. /// ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DockPattern.cs
- DetailsViewCommandEventArgs.cs
- Size3DConverter.cs
- VirtualDirectoryMapping.cs
- MessageQueuePermission.cs
- DragEventArgs.cs
- _BufferOffsetSize.cs
- QilVisitor.cs
- ValidatorCollection.cs
- StylusPointProperties.cs
- DateTimeFormatInfo.cs
- TimeoutValidationAttribute.cs
- DataRelation.cs
- Expander.cs
- PageFunction.cs
- MemoryMappedFile.cs
- GlyphingCache.cs
- EntryWrittenEventArgs.cs
- HostedTransportConfigurationManager.cs
- ReflectionTypeLoadException.cs
- UnsafeNativeMethods.cs
- EditBehavior.cs
- HttpModuleAction.cs
- SymbolMethod.cs
- XPathCompileException.cs
- SymbolPair.cs
- MergeLocalizationDirectives.cs
- WeakEventTable.cs
- StylusPointDescription.cs
- Metafile.cs
- ObjectDataSourceDisposingEventArgs.cs
- FontFaceLayoutInfo.cs
- NestPullup.cs
- DataRelationCollection.cs
- UxThemeWrapper.cs
- DataRelationPropertyDescriptor.cs
- SizeConverter.cs
- BrowserCapabilitiesCodeGenerator.cs
- ScriptingWebServicesSectionGroup.cs
- FileSystemWatcher.cs
- ToolStripPanel.cs
- MethodCallTranslator.cs
- MgmtConfigurationRecord.cs
- Symbol.cs
- FlowNode.cs
- WebReferenceOptions.cs
- diagnosticsswitches.cs
- OleStrCAMarshaler.cs
- Walker.cs
- LockRecursionException.cs
- QueryOperatorEnumerator.cs
- FixedPosition.cs
- SqlParameterCollection.cs
- PkcsUtils.cs
- PackWebRequestFactory.cs
- XmlILStorageConverter.cs
- DataPagerField.cs
- PageStatePersister.cs
- ModuleConfigurationInfo.cs
- BasicHttpBindingElement.cs
- AllMembershipCondition.cs
- SqlErrorCollection.cs
- ProviderException.cs
- Typography.cs
- StrokeFIndices.cs
- QuaternionConverter.cs
- HttpBrowserCapabilitiesWrapper.cs
- Bitmap.cs
- XPathParser.cs
- SafeFreeMibTable.cs
- DialogResultConverter.cs
- SamlAudienceRestrictionCondition.cs
- DrawingVisual.cs
- StorageComplexTypeMapping.cs
- ToolStripItemClickedEventArgs.cs
- WebPartManagerInternals.cs
- OuterGlowBitmapEffect.cs
- Encoding.cs
- SizeAnimationClockResource.cs
- DataBinder.cs
- _SecureChannel.cs
- ConnectionPointCookie.cs
- WebPartZoneDesigner.cs
- LayoutManager.cs
- XmlChildEnumerator.cs
- OrderedParallelQuery.cs
- Qualifier.cs
- ListenerAdapterBase.cs
- BindingExpressionUncommonField.cs
- WebControlAdapter.cs
- TextEditorContextMenu.cs
- SafeTimerHandle.cs
- DesignSurfaceServiceContainer.cs
- UnauthorizedWebPart.cs
- HwndSourceKeyboardInputSite.cs
- peersecuritysettings.cs
- SafeNativeMethodsCLR.cs
- QueryGeneratorBase.cs
- UrlAuthFailureHandler.cs
- OdbcError.cs