C# - High memory consumption when calling method

Question

I am working with a Main Form and it has several Panels. In one of them, the "Geral panel" I use to call the instances of new forms and show in it using the following code of the Formcall class:

public void chamaFormulario(Form form)
{            
        Form activeForm = frmMain.ActiveForm;
        foreach (Panel painel in activeForm.Controls )
        {
            if(painel.Name == "panelGeral")
            {
                painel.Controls.Clear();
                if(form != null)
                {
                    form.TopLevel = false;
                    painel.Controls.Add(form);
                    form.Show();
                }
            }
        }            
}

For example, when the program opens I call a Welcome Form as follows:

private void frmMain_Shown(object sender, EventArgs e)
    {
        frmInicio frm = new frmInicio();
        formCall = new FormCall();
        formCall.chamaFormulario(frm);
    }

When I call the form frmClientes and when opening it, it has a "Back" button that aims to return to the welcome screen, which calls the following method:

private void btVoltarClientes_Click(object sender, EventArgs e)
    {
        frmInicio frm = new frmInicio();
        FormCall form = new FormCall();            
        form.chamaFormulario(frm);
    }

But noting the memory consumption in the VS2017 Community diagnostic tool, what was consuming 60MB over to 96MB, and if I open the customer form again and press back again, it goes up to 136MB... And so on and so forth.

What should I do to solve this high memory consumption?

Answer 1

Try while removing the controls from the panel (painel.Controls.Clear();) discard the forms:

painel.ControlRemoved += (ss, ee) => { ee.Control.Dispose(); };