[英]c# linq discrad InsertOnSubmit
i have a problem while using SubmitChanges() and InsertOnSubmit(), if the SubmitChanges fail and raise an exception the change set remains filled with the object that have a conflict in the db (eg the primary key already exists). 我在使用SubmitChanges()和InsertOnSubmit()时遇到问题,如果SubmitChanges失败并引发异常,则更改集仍将填充数据库中有冲突的对象(例如主键已存在)。 the problem is that if i re-execute the piece of code that insert the element in the database the SubmitChanges fail because the object with the wrong primary key is in the change set.
问题是,如果我重新执行在数据库中插入元素的代码,则SubmitChanges将失败,因为具有错误主键的对象位于更改集中。 The question is how to delete the first obj from the change set?
问题是如何从更改集中删除第一个obj?
private void bInsInserisci_Click(object sender, RoutedEventArgs e)
{
Prodotto tmp = new Prodotto();
try {
tmp.idProdotto = InsProdCodProd.Text;
tmp.tempo = Int32.Parse(InsProdTemp.Text);
tmp.note = InsProdNote.Text;
prodotti.InsertOnSubmit(tmp);
db.SubmitChanges();
}
catch {
System.Data.Linq.RefreshMode.KeepCurrentValues
}
}
Thanks 谢谢
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