csdn网址：http://msdn.microsoft.com/zh-cn/library/aszytsd8(VS.80).aspx



DataSet customers = new DataSet();
    adapter.FillSchema(customers, SchemaType.Source, "Customers");
    adapter.Fill(customers, "Customers");


DataSet orders = new DataSet();

    orders.ReadXml("Orders.xml", XmlReadMode.ReadSchema);
    orders.AcceptChanges();


    customers.Merge(orders, true, MissingSchemaAction.AddWithKey);


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扩展延伸——循环添加


DataSet alldata = new DataSet();
foreach (string strs in strtemp)
{
DataSet dsinfo = new DataSet();
alldata.Merge(dsinfo);
alldata.Tables[0].AcceptChanges();
}
OGVPStudy.DataSource = alldata;
OGVPStudy.DataBind();