Checkbox help in C#

Question

I have this code.

private void Verificar()
{
    mUpdater = new DatabaseUpdaterService();

    mUpdater.Initialize(false, null);

    DataTable dt = mUpdater.GetVersionCheckBoxToUpdate();
    int h = 0;
    foreach (DataRow row in dt.Rows)
    {
        CheckBox cb = new CheckBox();
        cb.Text = row["Version"].ToString();
        cb.Name = row["Version"].ToString();
        cb.Checked = false;
        cb.Parent = this;
        cb.Location = new System.Drawing.Point(0, h);
        h += cb.Height;
        cb.CheckedChanged += Cb_CheckedChanged;
        cb.Show();

    }
 }

void Cb_CheckedChanged(object sender, EventArgs e)
{            

}

The goal is, when selecting the checkbox, I want you to pass on the contents of it so that later you can do the update the ones I selected. Anyone can help?

Answer 1

I don’t quite understand your question, but from what I understand, you can do this:

void Cb_CheckedChanged(object sender, EventArgs e)
{            
    if (Cb_Checked)
    {
        Verificar();
    }
}

Answer 2

Here’s the code:

    private void Verificar()
    {
        mUpdater = new DatabaseUpdaterService();

        mUpdater.Initialize(false, null);

        DataTable dt = mUpdater.GetVersionCheckBoxToUpdate();
        int h = 0;
        foreach (DataRow row in dt.Rows)
        {
            CheckBox cb = new CheckBox();
            cb.Text = row["Version"].ToString();
            cb.Name = row["Version"].ToString();
            cb.Checked = false;
            cb.Parent = this;
            cb.Location = new System.Drawing.Point(0, h);
            h += cb.Height;
            cb.CheckedChanged += Cb_CheckedChanged;
            cb.Show();

        }
    }

    void cb_CheckedChanged(object sender, EventArgs e)
    {
        //sender é o objeto CheckBox onde o evento ocorreu
        CheckBox cb = ((CheckBox)sender);
        if (cb.Checked)
        {
            string versao = cb.Name;
            //Faz o processamento que deseja
        }

    }

One observation is that this processing within the event will occur every time the checkbox is checked. Maybe it was the case that you go through the screen at the time of Insert/Update and so get all the values that are checked.

It follows code, more extensive but I think more appropriate to the case:

    List<string> versoesSelecionadas;
    private void Verificar()
    {
        mUpdater = new DatabaseUpdaterService();

        mUpdater.Initialize(false, null);

        DataTable dt = mUpdater.GetVersionCheckBoxToUpdate();
        int h = 0;
        foreach (DataRow row in dt.Rows)
        {
            CheckBox cb = new CheckBox();
            cb.Text = row["Version"].ToString();
            cb.Name = row["Version"].ToString();
            cb.Checked = false;
            cb.Parent = this;
            cb.Tag = "esseCBfoiCriadoNoMetodoVerificar";
            cb.Location = new System.Drawing.Point(0, h);
            h += cb.Height;
            cb.Show();

        }
    }
    private void LerCheckBox(Control ctrl)
    {
        foreach (Control c in ctrl.Controls)
        {
            if (c is CheckBox)
            {
                string tag = c.Tag == null ? "" : c.Tag.ToString();
                if (tag == "esseCBfoiCriadoNoMetodoVerificar")
                {
                    //Aqui você já tem um objeto CheckBox criado no método verificar
                    if (((CheckBox)c).Checked)
                    {
                        string versao = ((CheckBox)c).Name;
                        //A Versao "versao" está marcada como true
                        versoesSelecionadas.Add(versao);
                    }
                }
            }
            else if (c.HasChildren)
            {
                LerCheckBox(c);
            }
        }
    }

    private void Gravar()
    {
        versoesSelecionadas = new List<string>();

        LerCheckBox(this);

        foreach (string v in versoesSelecionadas)
        {
            MessageBox.Show(v + " foi selecionada");
        }


    }