Dynamically add TabPage to TabControl in Windows Form (WinForms) Application using C# and VB.Net

This way

C#

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        tabControl1.Width = 500;
    }

    private void Button_Click(object sender, EventArgs e)
    {
        Button button = (sender as Button);
        MessageBox.Show(button.Name + " clicked");
    }

    private void btnAddTab_Click(object sender, EventArgs e)
    {
        // Create Tab
        TabPage dynamicTab = new TabPage();
        dynamicTab.Name = "dynamicTab";
        dynamicTab.Text = "Dynamic Tab";
        dynamicTab.BackColor = Color.SkyBlue;
        // Create Button
        Button btn = new Button();
        btn.Name = "btnButton";
        btn.Text = "Dynamic Button";
        btn.BackColor = Color.SeaGreen;
        btn.Click += new System.EventHandler(this.Button_Click);
        dynamicTab.Controls.Add(btn);
        this.tabControl1.TabPages.Add(dynamicTab);
    }

}

VB

Public Class Form1

    Private Sub Form1_Load_1(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        TabControl1.Width = 500

    End Sub
    Private Sub Button_Click(sender As Object, e As EventArgs)
        Dim button As Button = TryCast(sender, Button)
        MessageBox.Show(button.Name + " clicked")
    End Sub

    Private Sub btnAddTab_Click(sender As System.Object, e As System.EventArgs) Handles btnAddTab.Click
        ' Create Tab
        Dim dynamicTab As New TabPage()
        dynamicTab.Name = "dynamicTab"
        dynamicTab.Text = "Dynamic Tab"
        dynamicTab.BackColor = Color.SkyBlue
        ' Create Button
        Dim btn As New Button()
        btn.Name = "btnButton"
        btn.Text = "Dynamic Button"
        btn.BackColor = Color.SeaGreen
        AddHandler btn.Click, AddressOf Button_Click
        dynamicTab.Controls.Add(btn)
        Me.TabControl1.TabPages.Add(dynamicTab)
    End Sub
End Class