private void button1_Click(object sender, EventArgs e)
{
cat.RemoveRange(0, cat.Count);
string filename = "articulos.txt";
FileStream stream = new FileStream(filename, FileMode.Open, FileAccess.Read);
StreamReader reader = new StreamReader(stream);
for (int i = 0; i < comp.Count; i++)
{
if (comboBox1.Text == comp[i].Categorias)
{
compras cemp = new compras();
cemp.Categorias = comp[i].Categorias;
cemp.Nombre = comp[i].Nombre;
cemp.Codigo = comp[i].Codigo;
cemp.Existencia = comp[i].Existencia;
cemp.Precio = comp[i].Precio;
cat.Add(cemp);
}
//for i = num delproducto
//if combobox1 == comp[i].categoria
//guardar nueva lista
//data grid nueva lista
}
dataGridView1.DataSource = null;
dataGridView1.Refresh();
dataGridView1.DataSource = cat;
dataGridView1.Refresh();
}
public Form2()
{
InitializeComponent();
// classcompras.RemoveRange(0, classcompras.count);
string filename = "articulos.txt";
FileStream stream = new FileStream(filename, FileMode.Open, FileAccess.Read);
StreamReader reader = new StreamReader(stream);
while (reader.Peek() > -1)
{
compras catemp = new compras();
catemp.Categorias = reader.ReadLine();
catemp.Nombre = reader.ReadLine();
catemp.Codigo = reader.ReadLine();
catemp.Existencia = reader.ReadLine();
catemp.Precio = reader.ReadLine();
comp.Add(catemp);
}
reader.Close();
}