XML错误地填充了DataTable

Question

我正在使用此代码从此odata uri中提取xml调用。代码拉取xml并将其popular到数据集中。我尝试使用数据集中的所有表填充数据表，如下所示：

Destinations

问题是datagridview被填充了各种搞砸了。列名称与XML结构不匹配。它看起来像这样：

public void CreateObject()
    {
        const string ServerURl = "http://services.odata.org/northwind/northwind.svc/Customers";

         int i =0;
        DataSet ds = new DataSet();
        DataTable sourcetable = new DataTable();


        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(ServerURl);

        request.ContentType = "application/xml";

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        richTextBox1.AppendText(response.StatusDescription);
        var datastream = response.GetResponseStream();          
        XmlReader reader = XmlReader.Create(datastream);
        ds.ReadXml(reader);
        //dataGridView1.DataSource = ds.Tables[0];



        foreach (DataTable table in ds.Tables)
        {

           foreach (DataColumn dc in table.Columns)
           {


               if (sourcetable.Columns.Contains(dc.ToString().Trim()) == false)

                 //  MessageBox.Show(dc.ToString());
               {
               sourcetable.Columns.Add(dc.ToString().Trim(),typeof(string));
               }

           }
        }

        foreach (DataTable table in ds.Tables)
        {               

            foreach (DataRow dr in table.Rows)
            {

                sourcetable.Rows.Add(dr.ItemArray);
            }
        }

       dataGridView1.DataSource = sourcetable;    

    }

这是XML的片段

+---+---+----------------------+-----------------------------------------+--------------------------------+
|   | ID|     Feedid           |                  updated                |               type             |
+---+---+----------------------+-----------------------------------------+--------------------------------+
| 1 |   |                      |                                         |                                |
| 2 | 1 | 0                    | 2016-02-15T19:04:01Z                    |                                |
| 3 | 2 | Customers            | 0                                       |                                |
| 4 | 3 | Customers            | Customers                               |                                |
| 5 | 4 | Customer             | Customers('ALFKI')                      |                                |
| 6 | 5 | Orders               | Customers('ALFKI')/Orders               | application/atom+xml;type=feed |
| 7 | 6 | CustomerDemographics | Customers('ALFKI')/CustomerDemographics | application/atom+xml;type=feed |
+---+---+----------------------+-----------------------------------------+--------------------------------+