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Hi the following link may help you
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我只有一张桌子。我用它的索引替换了表的名称。我不认为这是问题。

I only have one table. I replaced the name of the table by its index. I don't think it's the problem.

Dim dt As New DataTable
dt = _DataSet.Tables(0)

但它有效。

现在我从数据集中获取数据。

我检查了数据集，它包含了我的表格。

以前的错误消失了。我将继续我的想法。希望它有效。

感谢您的回复。

But it worked.
now i'm getting my data from dataset.
I checked the dataset, it contains my table.
And the previous error is gone. I am going to continue my idea. Hope it works.
Thank you for your response.