将 xml 文件 转为 DataTable

 1         private static DataTable CreateDataTable(string table) {
 2             DataSet dataSet = new DataSet();
 3             string dataFile = FilesHelper.FindingFileName(Application.StartupPath, "Data\\Mail.xml");
 4             if(dataFile != string.Empty) {
 5                 FileInfo fi = new FileInfo(dataFile);
 6                 dataSet.ReadXml(fi.FullName);
 7                 return dataSet.Tables[table];
 8             }
 9             return null;
10         }