c# - SaveChange 不起作用后刷新数据源

Question

我在 ObjectSet 中添加数据并在 ObjectContext 上执行了 SaveChanges。但是新数据没有显示在 DataGrid 中!

代码:


bsWork.DataSource = Program.EC.Addresses;
...
Address newAdr = new Address();
//change properties newAdr
...
Program.EC.Addresses.AddObject(newAdr);
Program.EC.SaveChanges(SaveOptions.AcceptAllChangesAfterSave);

如何刷新数据或查看新数据？

UPD:解决方案




...
bsWork.Add(newAdr);
Program.EC.SaveChanges(SaveOptions.AcceptAllChangesAfterSave);
...

Answer 1

希望这段代码对您有所帮助。

try {
    // Try to save changes, which may cause a conflict.
    int num = context.SaveChanges();
    Console.WriteLine("No conflicts. " + num.ToString() + " updates saved.");
}
catch (OptimisticConcurrencyException) {
    // Resolve the concurrency conflict by refreshing the 
    // object context before re-saving changes. 
    context.Refresh(RefreshMode.ClientWins, orders);<p></p>

<pre><code>// Save changes.
context.SaveChanges();
Console.WriteLine("OptimisticConcurrencyException "
    + "handled and changes saved");
</code></pre>

<p>}</p>