protected virtual void OnDeleted(CrmDataSourceViewDeletedEventArgs args)
{
var handler = (EventHandler <CrmDataSourceViewDeletedEventArgs>)Events[EventDeleted];
if (handler != null)
{
handler(this, args);
}
}
protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
{
Tracing.FrameworkInformation("CrmDataSourceView", "ExecuteDelete", "Begin");
if (!CanDelete)
{
throw new NotSupportedException("Delete not supported.");
}
var id = keys["ID"] as Guid?;
var entityName = keys["Name"] as string;
if (id == null || entityName == null)
{
throw new ArgumentException("Delete requires the 'ID' and 'Name' to be specified as DataKeyNames.", "keys");
}
var rowsAffected = 0;
var deletedEventArgs = new CrmDataSourceViewDeletedEventArgs();
try
{
var entity = _crmDataContext.Retrieve(entityName, id.Value, new ColumnSet(true));
if (entity == null)
{
throw new NullReferenceException("The {0} entity with ID='{1}' could not be found.".FormatWith(id, entityName));
}
_crmDataContext.Attach(entity);
_crmDataContext.DeleteObject(entity);
var result = _crmDataContext.SaveChanges();
rowsAffected = result.HasError ? 0 : 1;
}
catch (Exception e)
{
Tracing.FrameworkError("CrmDataSourceView", "ExecuteDelete", "{0}", e);
deletedEventArgs.Exception = e;
deletedEventArgs.ExceptionHandled = true;
}
Tracing.FrameworkInformation("CrmDataSourceView", "ExecuteDelete", "End");
OnDeleted(deletedEventArgs);
return(rowsAffected);
}