Now to create tabs during runtime

Hi,

Try th following steps:

1. Create a new function to duplicate the tab and its contents:

private void DuplicateTab()
{
    // Get the current tab and its contents
    TabPage currentTab = tabControl1.SelectedTab;
    Button btn1 = currentTab.Controls.Find("button1", true).FirstOrDefault() as Button;
    Button btn2 = currentTab.Controls.Find("button2", true).FirstOrDefault() as Button;

    // Create a new tab and add it to the tab control
    TabPage newTab = new TabPage();
    newTab.Text = "New Tab";
    tabControl1.TabPages.Add(newTab);

    // Copy the contents of the current tab to the new tab
    Button newBtn1 = new Button();
    newBtn1.Text = btn1.Text;
    newBtn1.Location = btn1.Location;
    newBtn1.Size = btn1.Size;
    newTab.Controls.Add(newBtn1);

    Button newBtn2 = new Button();
    newBtn2.Text = btn2.Text;
    newBtn2.Location = btn2.Location;
    newBtn2.Size = btn2.Size;
    newTab.Controls.Add(newBtn2);

    // Select the new tab
    tabControl1.SelectedTab = newTab;
}

This function retrieves the current tab and its contents, creates a new tab, copies the contents of the current tab to the new tab, and selects the new tab.

2. Add an event handler for the "New Tab" item:
 

private void newTabToolStripMenuItem_Click(object sender, EventArgs e)
{
    DuplicateTab();
}

This event handler calls the DuplicateTab() function when the "New Tab" item is clicked.

3. Add an event handler for the form's Load event to create the initial tab:
 

private void Form1_Load(object sender, EventArgs e)
{
    TabPage initialTab = new TabPage();
    initialTab.Text = "Initial Tab";
    Button btn1 = new Button();
    btn1.Text = "Button 1";
    btn1.Location = new Point(10, 10);
    btn1.Size = new Size(75, 23);
    initialTab.Controls.Add(btn1);
    Button btn2 = new Button();
    btn2.Text = "Button 2";
    btn2.Location = new Point(100, 10);
    btn2.Size = new Size(75, 23);
    initialTab.Controls.Add(btn2);
    tabControl1.TabPages.Add(initialTab);
}

This event handler creates the initial tab and adds it to the tab control with two buttons.

With these steps, you should be able to duplicate the whole tab with the two buttons and open a new tab with focus to it when the "New Tab" item is clicked from the menu.

Issue solved. I fixed the code. Now it is working.

One more issue is there, the code doesn't work for TabControl on another Tab Control.

Okay. I got it 99% working but there is a small issue.

private void button3_Click(object sender, EventArgs e) { // Create a new tab page with the same controls as the first tab TabPage newTabPage = new TabPage(); newTabPage.Text = "tabPage" + (tabControl1.TabCount + 1); // Set a unique name foreach (Control control in tabPage1.Controls) { Control newControl = (Control)Activator.CreateInstance(control.GetType()); newControl.Location = control.Location; newControl.Size = control.Size; newControl.TabIndex = control.TabIndex; newControl.Visible = control.Visible; newControl.Text = control.Text; newControl.BackColor = control.BackColor; newControl.ForeColor = control.ForeColor; newControl.Font = control.Font; newTabPage.Controls.Add(newControl); // Add the new tab to the tab control and select it } tabControl1.TabPages.Add(newTabPage); tabControl1.SelectedTab = newTabPage; // Set focus to the first control on the new tab page newTabPage.SelectNextControl(new Control(), true, true, true, true); }

It's ot working. It creates tabs but blank tabs.

Okay. I am trying your code but this line gets red squggly.

Activator.CreateInstance(control.GetType());

Can you provide the UserControl version code?

I am trying that as it is much simpler but when I add the new usercontrol.dll to toolbox it gives error.

I am creating that with C# Control Forms project.