Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Client / System / Data / Services / Client / Binding / BindingUtils.cs / 1305376 / BindingUtils.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// Utilities for binding related operations // // //--------------------------------------------------------------------- namespace System.Data.Services.Client { #region Namespaces using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System.Reflection; using System.Collections; #endregion ///Utilities for binding related operations internal static class BindingUtils { ////// Throw if the entity set name is null or empty /// /// entity set name. /// entity instance for which the entity set name is generated. internal static void ValidateEntitySetName(string entitySetName, object entity) { if (String.IsNullOrEmpty(entitySetName)) { throw new InvalidOperationException(Strings.DataBinding_Util_UnknownEntitySetName(entity.GetType().FullName)); } } ////// Given a collection type, gets it's entity type /// /// Input collection type ///Generic type argument for the collection internal static Type GetCollectionEntityType(Type collectionType) { while (collectionType != null) { if (collectionType.IsGenericType && WebUtil.IsDataServiceCollectionType(collectionType.GetGenericTypeDefinition())) { return collectionType.GetGenericArguments()[0]; } collectionType = collectionType.BaseType; } return null; } ///Verifies the absence of observer for an DataServiceCollection ///Type of DataServiceCollection /// Non-typed collection object /// Collection property of the source object which is being assigned to /// Type of the source object internal static void VerifyObserverNotPresent(object oec, string sourceProperty, Type sourceType) { Debug.Assert(BindingEntityInfo.IsDataServiceCollection(oec.GetType()), "Must be an DataServiceCollection."); DataServiceCollection typedCollection = oec as DataServiceCollection ; if (typedCollection.Observer != null) { throw new InvalidOperationException(Strings.DataBinding_CollectionPropertySetterValueHasObserver(sourceProperty, sourceType)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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