dataset读取XML如何判断是否为空

dataset读取XML怎么判断是否为空？

C# code

DataSet data = new DataSet();         data.ReadXml(@"\abcd.xml"); for (int i = 0; i < data.Tables[0].Rows.Count; i++)                     {                         DR = data.Tables[0].Rows[i];                         string barcode = DR["barcode"].ToString();                         if (barcode == textBox1.Text)                         {                             textBox2.Text = DR["productname"].ToString();                             menuItem1.Enabled = false;                             menuItem2.Enabled = true;                         }                     }

C# code

data!=null&&data.Tables[0].Rows.Count>0
[解决办法]
判断data.Tables的count