private string sumExtension()
{
ValidationBill validate = new ValidationBill();
string sumextension = "";
if (validate.Requiredcbo(txtpos) == false)
{
sumextension += "\n Pos wrong";
}
if (validate.Required(txtinmoney) == false)
{
sumextension += "\n Pay money not null";
}
if (validate.Required(txtinmoney) == true)
{
if (validate.Compared(float.Parse(txtamount.Text), float.Parse(txtinmoney.Text)) == false)
{
sumextension = "\n Pay money not lower than total money";
}
}
if (validate.Requiredcbo(cboaccount) == false)
{
sumextension += "\n User not null";
}
if (validate.RangeDatagridview(lstbilldetail) == false)
{
sumextension += "\n Bill must have product";
}
return(sumextension);
}
private void txtinmoney_TextChanged(object sender, EventArgs e)
{
ValidationBill validate = new ValidationBill();
if (validate.CheckNumTextbox(txtinmoney) == true)
{
if (validate.RangeDatagridview(lstbilldetail) == true)
{
try
{
float outp = float.Parse(txtinmoney.Text) - float.Parse(txtamount.Text);
if (outp < 0)
{
txtoutmoney.Text = "0";
}
else
{
txtoutmoney.Text = outp.ToString();
}
}
catch
{
txtoutmoney.Text = "0";
}
}
else
{
txtoutmoney.Text = txtinmoney.Text;
}
}
else
{
if (txtinmoney.Text == "" && txtamount.Text == "0")
{
}
else
{
MessageBox.Show("Must input number in this field");
}
}
}