การสร้าง Textbox และ Button อยู่รวมกันใน DataGridView (Windows Form App)

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Linq
Imports System.Text
Imports System.Windows.Forms
Public Class Form1
    Private btnSelector As New Button()
    'สร้าง Buttnon
    Private pCase As Integer
    'สำหรับ เก็บส่วนของการเลือก Column

    Private Sub SelectorClick(ByVal sender As Object, ByVal e As EventArgs)
        Select Case pCase
            Case 1
                'value from dataGridView1_CellEnter
                If True Then
                    MessageBox.Show("Show Dialog here!!")
                    Exit Select
                End If
        End Select
    End Sub

    Private Sub CreateButton(ByRef myButton As Button)
        myButton.FlatStyle = FlatStyle.Flat
        myButton.FlatAppearance.BorderSize = 0
        myButton.Size = New Size(30, 19)
        myButton.ImageAlign = ContentAlignment.MiddleCenter
        myButton.FlatAppearance.MouseDownBackColor = Color.Transparent
        myButton.FlatAppearance.MouseOverBackColor = Color.Transparent
        myButton.BackColor = Color.Transparent
        'myButton.Image = Properties.resources.search3
        myButton.Image = Image.FromFile(CurDir() + "\pic\SearchBc.png")

        'กำหนดรูปภาพ
        myButton.Hide()
        AddHandler myButton.Click, New EventHandler(AddressOf Me.SelectorClick)
        '--------------------------------------------
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        CreateButton(btnSelector)
        DataGridView1.Controls.Add(btnSelector)
    End Sub

    Private Sub DataGridView1_CellEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellEnter
        If DataGridView1.Columns(e.ColumnIndex).Name = "Column1" Then
            pCase = 1
            Dim Loc As Rectangle = DataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, False)
            Dim Wid As Integer = DataGridView1.CurrentCell.Size.Width
            btnSelector.Location = New Point(Loc.X - 25 + Wid, Loc.Y)
            btnSelector.Show()
        End If
    End Sub

    Private Sub DataGridView1_CellLeave(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellLeave
        If btnSelector.Focused <> True Then
            btnSelector.Hide()
        End If

    End Sub
End Class

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
public class Form1
{
	private Button btnSelector = new Button();
	//สร้าง Buttnon
	private int pCase;
	//สำหรับ เก็บส่วนของการเลือก Column

	private void SelectorClick(object sender, EventArgs e)
	{
		switch (pCase) {
			case 1:
				//value from dataGridView1_CellEnter
				if (true) {
					MessageBox.Show("Show Dialog here!!");
					break; // TODO: might not be correct. Was : Exit Select
				}
				break;
		}
	}

	private void CreateButton(ref Button myButton)
	{
		myButton.FlatStyle = FlatStyle.Flat;
		myButton.FlatAppearance.BorderSize = 0;
		myButton.Size = new Size(30, 19);
		myButton.ImageAlign = ContentAlignment.MiddleCenter;
		myButton.FlatAppearance.MouseDownBackColor = Color.Transparent;
		myButton.FlatAppearance.MouseOverBackColor = Color.Transparent;
		myButton.BackColor = Color.Transparent;
		//myButton.Image = Properties.resources.search3
		myButton.Image = Image.FromFile(FileSystem.CurDir() + "\\pic\\SearchBc.png");

		//กำหนดรูปภาพ
		myButton.Hide();
		myButton.Click += new EventHandler(this.SelectorClick);
		//--------------------------------------------
	}

	private void Form1_Load(System.Object sender, System.EventArgs e)
	{
		CreateButton(ref btnSelector);
		DataGridView1.Controls.Add(btnSelector);
	}

	private void DataGridView1_CellEnter(object sender, System.Windows.Forms.DataGridViewCellEventArgs e)
	{
		if (DataGridView1.Columns(e.ColumnIndex).Name == "Column1") {
			pCase = 1;
			Rectangle Loc = DataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, false);
			int Wid = DataGridView1.CurrentCell.Size.Width;
			btnSelector.Location = new Point(Loc.X - 25 + Wid, Loc.Y);
			btnSelector.Show();
		}
	}

	private void DataGridView1_CellLeave(object sender, System.Windows.Forms.DataGridViewCellEventArgs e)
	{
		if (btnSelector.Focused != true) {
			btnSelector.Hide();
		}

	}
}