在一个XML文件中保存和加载两次DataTable并加载它。

DataTable dataTable = new DataTable("MyDataTable");
dataTable.Columns.Add("ID", typeof(int));
dataTable.Columns.Add("Name", typeof(string));
dataTable.Rows.Add(1, "John");
dataTable.Rows.Add(2, "Jane");

DataSet dataSet = new DataSet("MyDataSet");
dataSet.Tables.Add(dataTable);
dataSet.WriteXml("data.xml");

DataSet loadedDataSet = new DataSet();
loadedDataSet.ReadXml("data.xml");

DataTable loadedDataTable = loadedDataSet.Tables["MyDataTable"];

foreach (DataRow row in loadedDataTable.Rows)
{
    foreach (DataColumn column in loadedDataTable.Columns)
    {
        Console.WriteLine(row[column]);
    }
}