Control Subforms in tabs

Posted on 2009-05-14
Medium Priority
Last Modified: 2012-05-06
I have a form with a menu tool bar across the top.
The form contains multiple tabs containing instances of a sub-form.
How can I implement the buttons in the toolbar on the active subform rather than on the last one that is displayed.
Question by:SarahAm
LVL 11

Expert Comment

ID: 24393643
not sure i understand your question...
but, if what you want is to create a UserControl that has a toolBar inside it (on the top for instance), all you need to do is create that control, add a toolstrip (system.windows.forms.ToolStrip) to it and then add buttons to this toolstrip (system.windows.forms.ToolstripButton)


Accepted Solution

SarahAm earned 0 total points
ID: 24404832
No that's not it. What I want is to have one toolbar that controls the forms in each tab.
I found a solution to it, I initialized the common functions i want to implement on all types of sub-forms as interface, and it solved the problem. And i changed the implementation from tabs to MDI child forms.
I can't find the website i found the solution on, but the code is below.
public partial class MDIParentForm : Form
    //tool strip menu click event
    private void whoIsActiveToolStripMenuItem_Click(object sender, EventArgs e)
        if (this.ActiveMdiChild != null)
            IChildForm childForm = (IChildForm)this.ActiveMdiChild;
interface IChildForm
    string GetStr();
public partial class MDIChildForm1 : Form, IChildForm
    public string GetStr()
        return "MDIChildForm1";
public partial class MDIChildForm2 : Form, IChildForm
    public string GetStr()
        return "MDIChildForm2";

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