private void button1_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds.ReadXml("D:\\1.xml");
foreach (DataRow row in ds.Tables[0].Rows)
{
string a1 = row[0].ToString();
string a2 = row[1].ToString();
string a3 = row[2].ToString();
string a4 = row[3].ToString();
MessageBox.Show(a1);
MessageBox.Show(a2);
MessageBox.Show(a3);
MessageBox.Show(a4);
}
}