dmdb/view/frmEnterBlzKto.cs

using System;
using System.Drawing;
using System.Windows.Forms;

using dezentrale.model.money;

namespace dezentrale.view
{
    public class frmEnterBlzKto : FormWithActionButtons
    {
        private TextBox tbBlz;
        private TextBox tbKtoNummer;
        private Label lblCcPz;
        private string cc;

        public string Iban
        {
            get
            {
                return BankTransfer.GetIbanFromKtoBlz("DE", tbBlz.Text, tbKtoNummer.Text);
            }
            set
            {
                cc = BankTransfer.GetCCodeFromIban(value);
                lblCcPz.Text = cc + BankTransfer.CalcPz(value);
                tbBlz.Text = BankTransfer.GetBlzFromIban(value);
                tbKtoNummer.Text = BankTransfer.GetKtoFromIban(value);
            }
        }
        public frmEnterBlzKto(string ibanInput)
        {
            DialogResult = DialogResult.Cancel;
            this.StartPosition = FormStartPosition.CenterParent;
            this.Size = new System.Drawing.Size(370, 90);
            this.Text = "dezentrale-members :: Enter BLZ/KTO";

            this.Controls.Add(tbBlz = new TextBox()
                {
                    Location = new Point(lm + 113, 0 * line + tm),
                    Width = 80,
                });
            tbBlz.TextChanged += tbBlzKto_Changed;
            this.Controls.Add(tbKtoNummer = new TextBox()
                {
                    Location = new Point(lm + 203, 0 * line + tm),
                    Width = 100,
                });
            tbKtoNummer.TextChanged += tbBlzKto_Changed;

            this.Controls.Add(lblCcPz = new Label()
                {
                    Location = new Point(lm + 5, 0 * line + tm),
                    TextAlign = ContentAlignment.MiddleRight,

                });
            try { Iban = ibanInput; } catch (Exception) { }

            AddButton("Apply", btnApply_Click);
            AddButton("Cancel", btnCancel_Click);
        }

        private void tbBlzKto_Changed(object sender, EventArgs e)
        {
            try
            {
                string iban = BankTransfer.GetIbanFromKtoBlz(cc, tbBlz.Text, tbKtoNummer.Text);
                lblCcPz.Text = cc + BankTransfer.CalcPz(iban);
                lblCcPz.BackColor = SystemColors.Control;
            } catch(Exception ex)
            {
                lblCcPz.Text = $"ERROR\r\n{ex.Message}";
                lblCcPz.BackColor = Color.LightPink;
            }
        }
        private void btnApply_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.OK;
            this.Close();
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}