private void loadtang()
{
TangBS bs = new TangBS();
List <TangDB> ds = bs.tang();
for (int i = 0; i < ds.Count; i++)
{
cmbTang.Items.Add(ds[i].tentang.ToString());
}
}
private void load_tang()
{
listView1.Items.Clear();
TangBS bs = new TangBS();
List <TangDB> ds = bs.tang();
for (int i = 0; i < ds.Count; i++)
{
listView1.Items.Add(ds[i].matang.ToString());
listView1.Items[i].SubItems.Add(ds[i].tentang.ToString());
}
}
private void trung_dl()
{
TangBS bs = new TangBS();
List <TangDB> ds = bs.tang();
for (int i = 0; i < ds.Count; i++)
{
if (txtMatang.Text == ds[i].matang.ToString())
{
of = true;
break;
}
}
}
private string convertToMa(string ten)
{
string text = "";
TangBS bs = new TangBS();
List <TangDB> ds = bs.tang();
for (int i = 0; i < ds.Count; i++)
{
if (ten == ds[i].tentang.ToString())
{
text = ds[i].matang.ToString();
}
}
return(text);
}
private void cmbTang_SelectedIndexChanged(object sender, EventArgs e)
{
TangBS bs = new TangBS();
List <TangDB> ds = bs.tang();
for (int i = 0; i < ds.Count; i++)
{
if (cmbTang.SelectedItem.ToString() == ds[i].tentang.ToString())
{
ma_tang = ds[i].matang.ToString();
}
}
if (cmbTang.Text != "" & txtTim.Text != "" & cmbTim.Text != "")
{
btnTim.Enabled = true;
}
else if (cmbTang.Text == "" | txtTim.Text == "" | cmbTim.Text == "")
{
btnTim.Enabled = false;
}
listView2.Items.Clear();
this.view();
listView2.Focus();
if (listView2.Items.Count > 0)
{
listView2.ContextMenuStrip = contextMenuStrip1;
}
else if (listView2.Items.Count == 0)
{
listView2.ContextMenuStrip = null;
}
}
