Legge un file XML (C#)
[C# ]

DataSet dsSenderSettings = new DataSet();
            DataRow[] dr;
            string str;

            dsSenderSettings.ReadXml(Application.StartupPath + @"\SenderSettings.xml");

            str = "CompanyCode=" + "'" + ((MyList)comboBox1.Items[0]).ID + "'";
            dr = (DataRow[])dsSenderSettings.Tables[0].Select(str);

            if (comboBox1.SelectedIndex == -1)
            {
                str = "CompanyCode=" + "'" + ((MyList)comboBox1.Items[0]).ID + "'";
                dr = ((DataRow[])dsSenderSettings.Tables[0].Select(str));
            }
            else
            {
                str = "CompanyCode=" + "'" + ((MyList)comboBox1.Items[comboBox1.SelectedIndex]).ID + "'"; 
                dr = ((DataRow[])dsSenderSettings.Tables[0].Select(str));
            }
            

            textBox1.Text = (string)dr[0]["field1"];

            textBox2.Text = (string)dr[0]["field2"];

            textBox3.Text = (string)dr[0]["field3"];

            textBox4.Text = (string)dr[0]["field4"];