private void btnLoadPersist_Click(object sender, System.EventArgs e)
{
FileStream fs = null;
try
{
PersistedCountry pc = new PersistedCountry(string.Empty,
0);
fs = File.Open(Application.StartupPath +
COUNTRY_FILE, FileMode.Open);
pc.Load(fs);
this.mCountry = new ImprovedCountry(pc.Name, pc.Population);
this.txtName.Text = this.mCountry.Name;
this.txtPopulation.Text = this.mCountry.Population.ToString();
}
finally
{
fs.Close();
}
}
private void btnUpdate_Click(object sender, System.EventArgs e)
{
try
{
if (this.mCountry == null)
{
this.mCountry = new ImprovedCountry(this.txtName.Text,
Int32.Parse(this.txtPopulation.Text));
}
else
{
this.mCountry.Population =
Int32.Parse(this.txtPopulation.Text);
this.mCountry.Name = this.txtName.Text;
}
this.ShowCountry();
}
catch (FormatException ex)
{
}
}
