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2012-06-21T09:23:45.767
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<p>Hi I was facing same problem.Come up with solution like this</p> <pre><code>namespace ABC { public class EntitiesRepository<T> : IDisposable where T : class { private ObjectContext _context; /// <summary> /// The IObjectSet that represents the current entity. /// </summary> private ObjectSet<T> _objectSet; public OperationStatus status { get; set; } /// <summary> /// Initializes a new instance of the DataRepository class /// </summary> public BilderQuizEntitiesRepository() { _context = new Entities(); //DBContext _objectSet = _context.CreateObjectSet<T>(); } public T Select(int id) { EntityKey key = GetEntityKey(id); return (T)_context.GetObjectByKey(key); } public void Delete(T entity) { try { if (entity == null) { throw new ArgumentNullException("entity"); } EntityKey key = GetEntitySpecificKey(entity); T attachEntity = (T)_context.GetObjectByKey(key); _objectSet.DeleteObject(attachEntity); SaveChanges(); } catch { } } public void Delete(int id) { EntityKey key = GetEntityKey(id); Delete((T)_context.GetObjectByKey(key)); SaveChanges(); } public void Update(T entity) { try { if (entity == null) { throw new ArgumentNullException("entity"); } EntityKey key = GetEntitySpecificKey(entity); T attachEntity = (T)_context.GetObjectByKey(key); _objectSet.Attach(attachEntity); _objectSet.ApplyCurrentValues(entity); SaveChanges(); } catch { } } /// <summary> /// Returns Entity Key /// </summary> /// <param name="keyValue"></param> /// <returns></returns> private EntityKey GetEntityKey(object keyValue) //Get EnrityKey { var entitySetName = _context.DefaultContainerName + "." + _objectSet.EntitySet.Name; var keyPropertyName = _objectSet.EntitySet.ElementType.KeyMembers[0].ToString(); var entityKey = new EntityKey(entitySetName, new[] { new EntityKeyMember(keyPropertyName, keyValue) }); return entityKey; } /// <summary> /// Returns Entity Key /// </summary> /// <param name="keyValue"></param> /// <returns></returns> private EntityKey GetEntitySpecificKey(T entity) //Get EnrityKey { Type objType = typeof(T); var keyPropertyName = _objectSet.EntitySet.ElementType.KeyMembers[0].ToString(); var pi = objType.GetProperty(keyPropertyName); var keyValue = pi.GetValue(entity, null); var entitySetName = _context.DefaultContainerName + "." + _objectSet.EntitySet.Name; var entityKey = new EntityKey(entitySetName, new[] { new EntityKeyMember(keyPropertyName, keyValue) }); return entityKey; } private string GetPrimaryKeyValue(T entity) { Type objType = typeof(T); var keyPropertyName = _objectSet.EntitySet.ElementType.KeyMembers[0].ToString(); var pi = objType.GetProperty(keyPropertyName); var keyValue = pi.GetValue(entity, null); return keyValue.ToString(); } /// <summary> /// Saves all context changes /// </summary> public bool SaveChanges() { return _context.SaveChanges() > 0 ? true : false; } /// <summary> /// Releases all resources used by the WarrantManagement.DataExtract.Dal.ReportDataBase /// </summary> public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } /// <summary> /// Releases all resources used by the WarrantManagement.DataExtract.Dal.ReportDataBase /// </summary> /// <param name="disposing">A boolean value indicating whether or not to dispose managed resources</param> protected virtual void Dispose(bool disposing) { if (disposing) { if (_context != null) { _context.Dispose(); _context = null; } } } } } </code></pre> <p>Please let me know if u found a better way to do the same</p>
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