批量添加数据

C#批量向数据库增加数据：
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using (var dbPlatform = DbContext.PlatformWorkCreate())
{
var CId = dbPlatform.Query<LQ_WaWaShowCategory>().Where(t => t.CategoryNameEn == "dianzijiaocai").Select(t => t.Id).FirstOrDefault();
for (int i = 0; i < model.SelectedIds.Count; i++)
{
LQ_PublicResourceOutline dmodel = null;
dmodel=new LQ_PublicResourceOutline();
dmodel.LQ_OutlineId = model.SelectedIds[i];
dmodel.CategoryId = CId;
dmodel.PublishStatus = 0;
dmodel.Summary = "";

dbPlatform.Add(dmodel);
}
dbPlatform.SaveChanges();

}