Add new tab into tabcontrol from an UserControl that attached to tabcontrol

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I want to add a new tab and attach a control into my tabcontrol from an UserControl that attached to the tabcontrol.
I used DotNetBar Components.

I use the code below in form1 and I want to call It from UserControl

C#

public void NewTab (string TabName)
        {
            TabItem newtab1;
            usercontrol_1 a1 = new usercontrol_1();
            a1.Dock = DockStyle.Fill;
            newtab1 = this.tabControl1.CreateTab(TabName);
            newtab1.AttachedControl.Controls.Add(a1);
            this.tabControl1.SelectedTab = newtab1;
        }

this is how I call this function from UserControl:

C#

Form1 f1 = new Form1();
f1.NewTab("new tab");
f1.show();

But I don't want to open another Form1!

Posted 6-May-14 22:38pm

MohammadHG

Updated 6-May-14 22:59pm

v2

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CHill60 7-May-14 4:44am

"nothing happened"? Does this mean that you couldn't see the Form1 instance that you created?
Have you done f1.Show()?

MohammadHG 7-May-14 4:46am

Thanks for your your help, I don't want to open another form1.

CHill60 7-May-14 5:06am

Ok, now I'm confused. V1 of your question said you were calling that function from other forms, now you are saying you are calling it from the UserControl - do you want the new tab on the same form as the UserControl or on Form1 (but the one that is already running, not a new one)??

MohammadHG 7-May-14 5:17am

Sorry about that. Actually there is a form and a tabcontrol in it, there is an usercontrol that attached to the tabcontrol ant I want to create a new tab and attach an usercontrol by clicking a button from usercontrol that already exist in tabcontrol.

2 solutions

Solution 1

change the code as below

C#

Form1  f1 = (this.Parent as Form1);
f1.NewTab("new tab");

Posted 6-May-14 23:13pm

DamithSL

Updated 6-May-14 23:20pm

v2

Comments

CHill60 7-May-14 5:15am

OP doesn't want another instance of Form1!

DamithSL 7-May-14 5:20am

is there any new form created in my code? i'm taking parent of the control and then add new tab.

CHill60 7-May-14 6:16am

Fair enough - I misread that (apologies). But to be fair, how do we know that Form1 is the parent form?

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CHill60 · Accepted Answer · 2014-05-06T23:17:00

Solution 2

Try something like

C#

foreach (Form form in Application.OpenForms)
{
    if (form is Form1)
    {
       Form1 f = (Form1)form;
       f.NewTab("new tab");
       break;
    }
}

Posted 6-May-14 23:17pm

CHill60

Updated 7-May-14 0:18am

v3

Comments

MohammadHG 7-May-14 5:25am

It is giving an Error in this line: form.NewTab("new tab");
Error: Windows.Form dows not contain a definition for NewTab

CHill60 7-May-14 6:18am

Sorry - I left the cast out. I've updated my solution (but not with tested code - I can't right now, sorry)

MohammadHG 7-May-14 6:37am

Thank you so much.