private static string GetTableName(System.Data.Linq.DataContext DB, Type entityType)
{
Type tableType = typeof(System.Data.Linq.Table <>).MakeGenericType(entityType);
var propertyInfo = DB.GetType().GetProperties().Where(p => p.PropertyType.IsGenericType && p.PropertyType == tableType).FirstOrDefault();
if (propertyInfo == null)
{
return(string.Empty);
}
return(propertyInfo.Name);
}
internal static bool DeleteWithCascase <T>(System.Data.Linq.DataContext ctx, T entity) where T : class, INotifyPropertyChanged
{
//Get the primary key of the context
var pkey = GetPrimaryKey <T>();
//Get foreign keys
var fkeys = GetForeignKeys <T>();
//get the model for the ctx
var model = new AttributeMappingSource().GetModel(ctx.GetType());
//Get the table for the given entity
var eTable = ctx.GetTable <T>();
foreach (var modelTable in model.GetTables())
{
//Loop tables and delete
}
return(true);
}
internal static void MakeDirty(this System.Data.Linq.DataContext dc, object someEntity)
{
//get dc type
Type dcType = dc.GetType();
while (dcType != typeof(System.Data.Linq.DataContext))
{
dcType = dcType.BaseType;
}
//get hold of the CommonDataServices thing in the DC
System.Reflection.FieldInfo commonDataServicesField
= dcType.GetField("services", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
object commonDataServices = commonDataServicesField.GetValue(dc);
Type commonDataServicesType = commonDataServices.GetType();
//get hold of the change tracker
System.Reflection.PropertyInfo changeTrackerProperty
= commonDataServicesType.GetProperty("ChangeTracker", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
object changeTracker = changeTrackerProperty.GetValue(commonDataServices, null);
Type changeTrackerType = changeTracker.GetType();
//get the tracked object method
System.Reflection.MethodInfo getTrackedObjectMethod
= changeTrackerType.GetMethod("GetTrackedObject", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
object trackedObject = getTrackedObjectMethod.Invoke(changeTracker, new object[] { someEntity });
//get the ConvertToModified method
Type trackedObjectType = trackedObject.GetType();
System.Reflection.MethodInfo convertToModifiedMethod
= trackedObjectType.GetMethod("ConvertToModified", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
//call the convert to modified method
convertToModifiedMethod.Invoke(trackedObject, null);
}
