How to avoid TabControl .SelectTab() causing focus to leap from tab to e.g. button?

TabControl .SelectTab() engages the tab page and the focus momentarily appears on the tab as expected but then immediately leaps to a button on the tab page. How can I get it focus to stay on the tab?

I tried

mytc.TabPages[mytc.SelectedIndex].Focus();

but this fails, sending the focus somewhere invisible.

One solution is to enclose all buttons in a groupbox (!) but I would rather avoid such a kludge.

The default Windows Forms App code showing this kludge is here - build, run and press F5 to see the fail, and F6 for the kludged.

Form1.cs

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;

    namespace WindowsFormsApplication1
    {
        public partial class Form1 : Form
        {
            TabControl mytc;
            public Form1()
            {
                InitializeComponent();
                mytc = tabControl1;
            }

            private void tab1ToolStripMenuItem_Click(object sender, EventArgs e)
            {   
                mytc.SelectTab(0); 
                // mytc.TabPages[mytc.SelectedIndex].Focus(); // fails
            }

            private void tab2ToolStripMenuItem_Click(object sender, EventArgs e)
            {
                mytc.SelectTab(1); 
                // mytc.TabPages[mytc.SelectedIndex].Focus(); // fails
            }

            private void button1_Click(object sender, EventArgs e)
            {
                debugl.Text = "Button1";

            }
            private void button2_Click(object sender, EventArgs e)
            {
                debugl.Text = "Button2";
            }

        }
    }

Form1.Designer.cs

    namespace WindowsFormsApplication1
    {
        partial class Form1
        {
            /// <summary>
            /// Required designer variable.
            /// </summary>
            private System.ComponentModel.IContainer components = null;

            /// <summary>
            /// Clean up any resources being used.
            /// </summary>
            /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
            protected override void Dispose(bool disposing)
            {
                if (disposing && (components != null))
                {
                    components.Dispose();
                }
                base.Dispose(disposing);
            }

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.tabControl1 = new System.Windows.Forms.TabControl();
        this.tabPage1 = new System.Windows.Forms.TabPage();
        this.button3 = new System.Windows.Forms.Button();
        this.tabPage2 = new System.Windows.Forms.TabPage();
        this.button2 = new System.Windows.Forms.Button();
        this.menuStrip1 = new System.Windows.Forms.MenuStrip();
        this.operationToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.tab1ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.tab2ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.debugl = new System.Windows.Forms.Label();
        this.button1 = new System.Windows.Forms.Button();
        this.button4 = new System.Windows.Forms.Button();
        this.groupBox1 = new System.Windows.Forms.GroupBox();
        this.tabControl1.SuspendLayout();
        this.tabPage1.SuspendLayout();
        this.tabPage2.SuspendLayout();
        this.menuStrip1.SuspendLayout();
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();
        // 
        // tabControl1
        // 
        this.tabControl1.Controls.Add(this.tabPage1);
        this.tabControl1.Controls.Add(this.tabPage2);
        this.tabControl1.Location = new System.Drawing.Point(9, 23);
        this.tabControl1.Name = "tabControl1";
        this.tabControl1.SelectedIndex = 0;
        this.tabControl1.Size = new System.Drawing.Size(272, 136);
        this.tabControl1.TabIndex = 0;
        // 
        // tabPage1
        // 
        this.tabPage1.Controls.Add(this.button4);
        this.tabPage1.Controls.Add(this.button3);
        this.tabPage1.Location = new System.Drawing.Point(4, 22);
        this.tabPage1.Name = "tabPage1";
        this.tabPage1.Padding = new System.Windows.Forms.Padding(3);
        this.tabPage1.Size = new System.Drawing.Size(264, 110);
        this.tabPage1.TabIndex = 0;
        this.tabPage1.Text = "tabPage1";
        this.tabPage1.UseVisualStyleBackColor = true;
        // 
        // button3
        // 
        this.button3.Location = new System.Drawing.Point(35, 61);
        this.button3.Name = "button3";
        this.button3.Size = new System.Drawing.Size(75, 23);
        this.button3.TabIndex = 0;
        this.button3.Text = "butt&on1";
        this.button3.UseVisualStyleBackColor = true;
        this.button3.Click += new System.EventHandler(this.button1_Click);
        // 
        // tabPage2
        // 
        this.tabPage2.Controls.Add(this.groupBox1);
        this.tabPage2.Location = new System.Drawing.Point(4, 22);
        this.tabPage2.Name = "tabPage2";
        this.tabPage2.Padding = new System.Windows.Forms.Padding(3);
        this.tabPage2.Size = new System.Drawing.Size(264, 110);
        this.tabPage2.TabIndex = 1;
        this.tabPage2.Text = "tabPage2";
        this.tabPage2.UseVisualStyleBackColor = true;
        // 
        // button2
        // 
        this.button开发者_Go百科2.Location = new System.Drawing.Point(13, 27);
        this.button2.Name = "button2";
        this.button2.Size = new System.Drawing.Size(75, 23);
        this.button2.TabIndex = 1;
        this.button2.Text = "butto&n2";
        this.button2.UseVisualStyleBackColor = true;
        this.button2.Click += new System.EventHandler(this.button2_Click);
        // 
        // menuStrip1
        // 
        this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
        this.operationToolStripMenuItem});
        this.menuStrip1.Location = new System.Drawing.Point(0, 0);
        this.menuStrip1.Name = "menuStrip1";
        this.menuStrip1.Size = new System.Drawing.Size(292, 24);
        this.menuStrip1.TabIndex = 1;
        this.menuStrip1.Text = "menuStrip1";
        // 
        // operationToolStripMenuItem
        // 
        this.operationToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
        this.tab1ToolStripMenuItem,
        this.tab2ToolStripMenuItem});
        this.operationToolStripMenuItem.Name = "operationToolStripMenuItem";
        this.operationToolStripMenuItem.ShortcutKeys = System.Windows.Forms.Keys.F5;
        this.operationToolStripMenuItem.Size = new System.Drawing.Size(67, 20);
        this.operationToolStripMenuItem.Text = "Operation";
        // 
        // tab1ToolStripMenuItem
        // 
        this.tab1ToolStripMenuItem.Name = "tab1ToolStripMenuItem";
        this.tab1ToolStripMenuItem.ShortcutKeys = System.Windows.Forms.Keys.F5;
        this.tab1ToolStripMenuItem.Size = new System.Drawing.Size(126, 22);
        this.tab1ToolStripMenuItem.Text = "tab1";
        this.tab1ToolStripMenuItem.Click += new System.EventHandler(this.tab1ToolStripMenuItem_Click);
        // 
        // tab2ToolStripMenuItem
        // 
        this.tab2ToolStripMenuItem.Name = "tab2ToolStripMenuItem";
        this.tab2ToolStripMenuItem.ShortcutKeys = System.Windows.Forms.Keys.F6;
        this.tab2ToolStripMenuItem.Size = new System.Drawing.Size(126, 22);
        this.tab2ToolStripMenuItem.Text = "tab2";
        this.tab2ToolStripMenuItem.Click += new System.EventHandler(this.tab2ToolStripMenuItem_Click);
        // 
        // debugl
        // 
        this.debugl.AutoSize = true;
        this.debugl.Location = new System.Drawing.Point(40, 197);
        this.debugl.Name = "debugl";
        this.debugl.Size = new System.Drawing.Size(37, 13);
        this.debugl.TabIndex = 2;
        this.debugl.Text = "debug";
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(33, 67);
        this.button1.Name = "button1";
        this.button1.Size = new System.Drawing.Size(75, 23);
        this.button1.TabIndex = 1;
        this.button1.Text = "butto&n2";
        this.button1.UseVisualStyleBackColor = true;
        this.button1.Click += new System.EventHandler(this.button2_Click);
        // 
        // button4
        // 
        this.button4.Location = new System.Drawing.Point(127, 61);
        this.button4.Name = "button4";
        this.button4.Size = new System.Drawing.Size(75, 23);
        this.button4.TabIndex = 0;
        this.button4.Text = "butt&on1";
        this.button4.UseVisualStyleBackColor = true;
        this.button4.Click += new System.EventHandler(this.button1_Click);
        // 
        // groupBox1
        // 
        this.groupBox1.Controls.Add(this.button1);
        this.groupBox1.Controls.Add(this.button2);
        this.groupBox1.Location = new System.Drawing.Point(30, 4);
        this.groupBox1.Name = "groupBox1";
        this.groupBox1.Size = new System.Drawing.Size(200, 100);
        this.groupBox1.TabIndex = 3;
        this.groupBox1.TabStop = false;
        this.groupBox1.Text = "groupBox1";
        // 
        // Form1
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(292, 273);
        this.Controls.Add(this.debugl);
        this.Controls.Add(this.tabControl1);
        this.Controls.Add(this.menuStrip1);
        this.MainMenuStrip = this.menuStrip1;
        this.Name = "Form1";
        this.Text = "Form1";
        this.tabControl1.ResumeLayout(false);
        this.tabPage1.ResumeLayout(false);
        this.tabPage2.ResumeLayout(false);
        this.menuStrip1.ResumeLayout(false);
        this.menuStrip1.PerformLayout();
        this.groupBox1.ResumeLayout(false);
        this.ResumeLayout(false);
        this.PerformLayout();

    }

    #endregion

            private System.Windows.Forms.TabControl tabControl1;
            private System.Windows.Forms.TabPage tabPage1;
            private System.Windows.Forms.TabPage tabPage2;
            private System.Windows.Forms.Button button2;
            private System.Windows.Forms.MenuStrip menuStrip1;
            private System.Windows.Forms.ToolStripMenuItem operationToolStripMenuItem;
            private System.Windows.Forms.ToolStripMenuItem tab1ToolStripMenuItem;
            private System.Windows.Forms.ToolStripMenuItem tab2ToolStripMenuItem;
            private System.Windows.Forms.Label debugl;
            private System.Windows.Forms.Button button3;
            private System.Windows.Forms.Button button4;
            private System.Windows.Forms.Button button1;
            private System.Windows.Forms.GroupBox groupBox1;
        }
    }

Thanks.

Don't focus the TabPage, it doesn't know how to indicate focus nor does it have any use for keyboard input. Focus the TabControl instead.

        private void tab1ToolStripMenuItem_Click(object sender, EventArgs e)
        {   
            mytc.SelectTab(0); 
            mytc.Focus();
        }

A bit flaky on Win7 when I tried it, it doesn't always draw the dotted rectangle on the tab. Pressing the left/right cursor keys does however change tabs.