OleDbCommand cm = new OleDbCommand();
cm.Connection = conn;
cm.CommandText = "SELECT * FROM " + strTable;
OleDbDataAdapter ad = new OleDbDataAdapter(cm);
OleDbCommandBuilder build = new OleDbCommandBuilder(ad);
int n = ad.Update(datable);
datable.AcceptChanges();
MessageBox.Show(string.Format("更新了{0}条记录！", n));
大概这样
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