How to Compare Dates

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I have this code to save the data entered, Dia, Diainicio and Diafim.

protected void btnSavePontuacao_Click(object sender, EventArgs e)
    {
        decimal id_TipoDia = 0;
        string Dia = txtDay.Text;
        string DiaInicio = txtStartDate.Text;
        string DiaFim = txtEndDate.Text;
        DateTime DtInicio, DtFim;


        if (!string.IsNullOrEmpty(Dia) && DateTime.TryParse(DiaInicio, out DtInicio))
        {
            bool result = false;
            DateTime? DtFimNullable;

            if (DateTime.TryParse(DiaFim, out DtFim))
            {
                DtFimNullable = DtFim;
            }
            else
            {
                DtFimNullable = null;
            }

            if (CheckIfRatesRangeValuesAreValid(id_TipoDia, DtInicio, DtFimNullable))
            {
                if (id_TipoDia > 0)
                {
                    result = FlowCreditTaxasProdutoExtensaoPrazoProviderManager.Provider.UpdateProdutoAmortizacaoCreditoDias(id, Dia, DiaInicio, DtFimNullable);
                }
                else
                {
                    result = FlowCreditTaxasProdutoExtensaoPrazoProviderManager.Provider.InsertProdutoAmortizacaoCreditoDias(Dia, DiaInicio, DiaFim);
                }
            }
            else
            {
                result = false;
            }

            if (result)
            {
                ShowMessageJS("sucesso");
            }
            else
            {
                ShowMessageJS("fail");
            }
        }
        else
        {
            ShowMessageJS("");
        }
    }

In the

CheckIfRatesRangeValuesAreValid

would like to know how I can do a validation of the dates, ie if the end date is less than the start date

c#

  • This code does not even compile. There is no implicit conversion of DateTime for int.

  • Right! Now I’d like to know if it does and how to convert it?

  • 2

    Your publication does not make any sense compared to your real doubt. Also, there is no way to know what you want to do. Convert a date to an integer? In what way? What date information do you intend to use to put in a number?

  • All edited! It may be so to understand better. :)

  • I do not understand what the relationship of this code with the previous one and, to be honest, still can not understand anything.

  • This code is creating button save the entered data, right? now the question is I need to validate whether the date is correct or not. through Checkifratesrangevaluesarevalid. the goal is to make the Insert in the bd

  • @jbueno, this solved can close. Thank you for trying to help

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