Dynamic Listbox with Range of Values

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Dynamic Listbox with Range of Values

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#1 by (0 votes)

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My problem is that I can properly handle my listbox where I'm doing a "range of values" in my system.

I need it not to let codebehind add a value that is contained in the range of values .. Ex: 0-10 was added, now I can not let it add 9-20 because 9 is contained in the 0-10 range. .

How can I proceed? The system images and their lines of code are attached.

protectedvoidbtnAdicionarGastos_Click(objectsender,EventArgse){if(Tratar.Int(txtGastosDe.Value)<=Tratar.Int(txtGastosAte.Value)){stringgasto=txtGastosDe.Value+" - " + txtGastosAte.Value;
                        if (!string.IsNullOrEmpty(gasto))
                        {
                            DataTable dt = new DataTable("dxlstGastos");
                            if (lstGastos.Visible == false)
                            {
                                lstGastos.Visible = true;
                                btnRemoverGastos.Visible = true;
                            }
                            if (!string.IsNullOrEmpty(txtGastosDe.Value) && !string.IsNullOrEmpty(txtGastosAte.Value))
                            {
                                if (!lstGastos.Items.Contains(lstGastos.Items.FindByText(gasto)))
                                {
                                    dt.Columns.Add("GASTOS");
                                    foreach (ListItem item in lstGastos.Items)
                                    {
                                        DataRow dr;
                                        dr = dt.NewRow();
                                        dr["GASTOS"] = item.Value;
                                        dt.Rows.Add(dr);
                                    }
                                    DataRow row = dt.NewRow();
                                    row.BeginEdit();
                                    row["GASTOS"] = gasto;
                                    row.EndEdit();
                                    dt.Rows.InsertAt(row, 0);
                                    dt.AcceptChanges();

                                    lstGastos.DataSource = dt;
                                    lstGastos.DataTextField = "GASTOS";
                                    lstGastos.DataBind();
                                }
                            }
                        }
                        else
                        {
                            Alerta("Não insira valores em branco.");
                        }
                    }
                    else
                    {
                        Alerta("Por favor, insira valores finais maiores que os iniciais.");
                    }
                }

c# asp.net

asked by anonymous 18.12.2015 / 14:39

1 answer

Show and hide content in list form. with Div and Javascript [duplicate] duplicate md-chips AngularJS

score 0 · Accepted Answer

I responded as follows:

protected void btnAdicionarGastos_Click(object sender, EventArgs e)
        {
            if (Tratar.Int(txtGastosDe.Value) <= Tratar.Int(txtGastosAte.Value))
            {
                string gasto = txtGastosDe.Value + " - " + txtGastosAte.Value;
                if (!string.IsNullOrEmpty(gasto))
                {
                    foreach (ListItem item in lstGastos.Items)
                    {
                        string[] itm = Tratar.String(item.Value.Replace("-", ",")).Split(new char[] { ',' });
                        int valorinicial = Tratar.Int(itm[0], 0);
                        int valorfinal = Tratar.Int(itm[1], 0);
                        int gastode = Tratar.Int(txtGastosDe.Value, 0);
                        int gastoate = Tratar.Int(txtGastosAte.Value, 0);
                        if ((gastode <= valorinicial && gastoate >= valorfinal) || (gastoate >= valorinicial && gastoate <= valorfinal))
                        {
                            Alerta("Valores foram encontrados no intervalo entre as faixas");
                            return;
                        }
                        else if ((gastode >= valorinicial && gastode <= valorfinal) || (gastoate >= valorinicial && gastoate <= valorfinal))
                        {
                            Alerta("Valores foram encontrados no intervalo entre as faixas");
                            return;
                        }
                    }
                    lstGastos.Items.Add(gasto);
                }
                else
                {
                    Alerta("Não insira valores em branco.");
                }
            }
            else
            {
                Alerta("Por favor, insira valores finais maiores que os iniciais.");
            }

        }