private void btn_TinhLaiSuat_Click(object sender, EventArgs e)
{
if (IsInValid())
{
return;
}
foreach (DataGridViewRow row in grid_TienDoThanhToan.Rows)
{
if (row.Cells[0].Value == null)
{
continue;
}
var tienDoTruoc = tienDos.LastOrDefault();
var tongTienTruoc = tienDoTruoc != null ? tienDoTruoc.TongTienVay : 0;
var tienDo = new TienDo();
tienDo.Name = row.Cells[0].Value.ToString();
tienDo.TiLeThanhToan = row.Cells[1].Value.ToString().ParseDouble();
tienDo.SoTien = row.Cells[2].Value.ToString().ParseDouble();
tienDo.ThoiHanThanhToan = row.Cells[3].Value.ToString().ParseDatetime();
tienDo.TongTienVay = tongTienTruoc + tienDo.SoTien;
tienDos.Add(tienDo);
}
var tongTien = double.Parse(txt_TongTien.Text);
var phanTramVay = double.Parse(txt_PhanTramVay.Text);
var soTienVay = double.Parse(txt_SoTienVay.Text);
var soThangVay = Int32.Parse(txt_SoThangVay.Text);
var soThangConLai = soThangVay;
var laiSuatUuDai1 = double.Parse(txt_LaiSuatUuDai1.Text) / 100;
var sothangUuDai1 = Int32.Parse(txt_SoThangUuDai1.Text);
var laiSuatThaNoi = double.Parse(txt_LaiSuatThaNoi.Text) / 100;
var ngayGiaiNgan = dateTimeNgayGiaiNgan.Value;
var ngayHetHan = ngayGiaiNgan.AddMonths(soThangVay);
var tongTra = 0.0;
DataRow dw;
DataTable dt = new DataTable();
dt.Columns.Add("STT", typeof(int));
dt.Columns.Add("KyTraNo", typeof(DateTime));
dt.Columns.Add("SoGocConLai", typeof(string));
dt.Columns.Add("Goc", typeof(string));
dt.Columns.Add("Lai", typeof(string));
dt.Columns.Add("TienLai", typeof(string));
dt.Columns.Add("Tong", typeof(string));
for (int i = 1; i < soThangVay; i++)
{
double lai = 0;
double laisuat = 0;
var kyTraNo = ngayGiaiNgan.AddMonths(i);
var tienDo = GetTienDo(kyTraNo);
if (tienDo != null)
{
RemoveTienDo(tienDo);
}
soTienVay = tienDo != null ? tienDo.TongTienVay - tongTra : soTienVay;
var goc = Math.Round(soTienVay / (soThangVay - i), 0);
if (sothangUuDai1 > 0)
{
lai = Math.Round(soTienVay * laiSuatUuDai1 / 12, 0);
laisuat = laiSuatUuDai1 * 100;
sothangUuDai1--;
}
else
{
lai = Math.Round(soTienVay * laiSuatThaNoi / 12, 0);
laisuat = laiSuatThaNoi * 100;
}
soTienVay -= goc;
tongTra += goc;
dw = dt.NewRow();
dw["STT"] = i;
dw["KyTraNo"] = kyTraNo;
dw["SoGocConLai"] = soTienVay.AddSeparator();
dw["Goc"] = goc.AddSeparator();
dw["Lai"] = $"{laisuat}%";
dw["TienLai"] = lai.AddSeparator();
dw["Tong"] = (goc + lai).AddSeparator();
dt.Rows.Add(dw);
}
grid_KetQua.DataSource = dt;
}
private void RemoveTienDo(TienDo tienDo)
{
tienDos.Remove(tienDo);
}