Question

I have a Form and a UserControl. The UserControl has a menu, and the form has a tabstrip (General, Food, Vitamins etc).

In the UserControl, I have the following code: (Form name is frmForm, the tab names in the form are tabGeneral,tabFood, tabVitamins)

  frmForm fm=new frmForm();
  fm.tabMain.Selected=tabVitamins;

I call these line from the UserControl to capture the tab to get selected on the form, but it does not select the vitamins tab.

Where am I going wrong? I have access specifier as Protected Internal for tabs in the form.

Please advice.

Thanks,
Karthick

Answer 1

When you write new frmForm(), you’re creating a completely new instance of frmForm, which is then discarded.

To get the frmForm instance that holds your control, call the FindForm() method and cast to frmForm.

For example:

frmForm myForm = FindForm() as frmForm; 
if(myForm != null)
    myForm.tabMain.SelectedTab = myForm.tabVitamins;

If the control is on some other form, this code won’t do anything.

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By the way, Hungarian notation is frowned upon in .Net.
Your form should probably be named something like MainForm.