Question

I have this code that works fine when I call it from within the form, however, when I call the same from the Parent it runs through the code without results:

    public void hideHelp()
    {
        //Check in db if panel1 is visible
        SqlCeCommand checkHelp = new SqlCeCommand("Select Show_Help from Options where Opt_Id = 1", this.optionsTableAdapter.Connection);
        if (this.optionsTableAdapter.Connection.State == ConnectionState.Closed) 
         { this.optionsTableAdapter.Connection.Open(); }

        try
        {
            bool showHelp = (bool)(checkHelp.ExecuteScalar());

            this.panel1.Visible = showHelp;
            this.Refresh();

        }
        catch (Exception ex) { MessageBox.Show(ex.Message); }

    }

On Main form I have a toggle button with the following code:

    private void tglHelp_Click(object sender, EventArgs e)
    {

        if (tglHelp.ToggleState.ToString() == "On")
        {
            HRDataSet.OptionsRow updateHelp = hRDataSet.Options.FindByOpt_Id(1);
            try
            {
                updateHelp.Show_Help = true;
                this.optionsTableAdapter.Update(this.hRDataSet);

                Form activeChild = this.ActiveMdiChild;



                if (activeChild.Name == "frmAddEmployees")
                {
                    frmAddEmployees chForm = new frmAddEmployees();
                    chForm.MdiParent = this;


                    chForm.hideHelp();
                }

            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message, Application.ProductName);
            }
            tglHelp.Text = "Help Panel \nOFF";
        }    

Any ideas?

Answer 1

In this piece of code

            if (activeChild.Name == "frmAddEmployees") 
            { 
                frmAddEmployees chForm = new frmAddEmployees(); 
                chForm.MdiParent = this; 
                chForm.hideHelp(); 
            } 

you open another frmAddEmployees and add to the MDI, but you don’t show it.
If your intent was to call the code in the current frmAddEmployees identified by the activeChild you should use something like this

            if (activeChild.Name == "frmAddEmployees") 
            { 
                ((frmAddEmployees)activeChild).hideHelp();
            }