Problems with Image Tag in Picturebox

Question

So, i try to learn how to Drag and Drop an Image from one PictureBox to another and that works well. But how can i drag and drop the Image TAG from pictureox1 to picturebox2?

i currently have 3 source images and 3 drop boxes. the dropbox6 is locked with a countdown after a buttonclick (see button2)

(later i will lock all dropboxes)

after i hit this button a countdown starts and if the countdown is 0 (ZERO) only then i can drag one of the 3 images to this box.

however, i have given each of these 3 images in the souceboxes a TAG name. how can i drop this tagname also to the dropbox?

here is what i have so far: (the Label labeled "Counter" is actually Label4 in the code

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

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

        private void pictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            // pictureBox1.DoDragDrop(pictureBox1.Image, DragDropEffects.Copy);
            ((PictureBox)sender).DoDragDrop(((PictureBox)sender).Image, DragDropEffects.Copy);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            pictureBox4.AllowDrop = true;
            pictureBox5.AllowDrop = true;
            pictureBox6.AllowDrop = true;
            pictureBox6.Enabled = false;


        }

        private void pictureBox4_DragEnter(object sender, DragEventArgs e)
        {
            if(e.Data.GetDataPresent(DataFormats.Bitmap))
            {
                e.Effect = DragDropEffects.Copy;
            }
        }

        private void pictureBox4_DragLeave(object sender, EventArgs e)
        {

        }

        private void pictureBox4_DragDrop(object sender, DragEventArgs e)
        {
            Image getPicture = (Bitmap) e.Data.GetData(DataFormats.Bitmap);
            pictureBox4.Image = getPicture;
        }



        private void pictureBox5_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
            {
                e.Effect = DragDropEffects.Copy;
            }
        }

        private void pictureBox5_DragLeave(object sender, EventArgs e)
        {

        }

        private void pictureBox5_DragDrop(object sender, DragEventArgs e)
        {
            Image getPicture = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox5.Image = getPicture;
        }



        private void pictureBox6_DragDrop(object sender, DragEventArgs e)
        {
            Image getPicture = (Bitmap)e.Data.GetData(DataFormats.Bitmap);
            pictureBox6.Image = getPicture;
         
            timer1.Enabled = false;
           
        }

        private void pictureBox6_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
            {
                e.Effect = DragDropEffects.Copy;
                timer1.Enabled = false;
            }
        }

        private void pictureBox6_DragLeave(object sender, EventArgs e)
        {
            timer1.Enabled = false;
        }

        private void pictureBox4_Click(object sender, EventArgs e)
        {
            MessageBox.Show("test");
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
        
            counter--;
            if (counter == 0)
               
            timer1.Stop();
            label4.Text = counter.ToString();
            if(counter == 0)
            {
            pictureBox6.Enabled = true;
            label4.Enabled = false;
            timer1.Stop(); 
                  
            }
           
        }

       

        private void button1_Click(object sender, EventArgs e)
        {
            System.Windows.Forms.Application.Exit();
        }

                
        
        private void pictureBox6_Click(object sender, EventArgs e)
        {
            
            MessageBox.Show(pictureBox6.Tag.ToString());

        }

        private int counter = 3;
        private void button2_Click(object sender, EventArgs e)
        {
            int counter = 3;
            timer1 = new Timer();
            timer1.Tick += new EventHandler(timer1_Tick);
            timer1.Interval = 1000; // 1 second
            timer1.Start();
            label4.Text = counter.ToString();
            if(label4.Text == "0")
            {
                timer1.Stop();
            }
            pictureBox6.Image = Properties.Resources.shoreSite_d_1_l_x_x;
            button2.Visible=false;
        }
    }

    internal class bild1
    {
        private Bitmap shoreSite_d_1_l_x_x;

        public bild1(Bitmap shoreSite_d_1_l_x_x)
        {
            this.shoreSite_d_1_l_x_x = shoreSite_d_1_l_x_x;
        }
    }
}

Answer 1

In MouseDown you are saying what you want to transmit in the DoDragDrop call. In your current case you are transmitting the image ((PictureBox)sender).Image but you can chose to transmit the tag as well...

private void pictureBox_MouseDown(object sender, MouseEventArgs e)
{
    ((PictureBox)sender).DoDragDrop(((PictureBox)sender).Image, DragDropEffects.Copy);
    ((PictureBox)sender).DoDragDrop(((PictureBox)sender).Tag, DragDropEffects.Copy);
}

...Then make sure to parse for each possible input type in DragDrop

private void pictureBox6_DragDrop(object sender, DragEventArgs e)
{
    var image = e.Data.GetData(DataFormats.Bitmap) as Bitmap;
    var tag = e.Data.GetData(DataFormats.Text) as string;
    if (image != null)
    {
        pictureBox4.Image = image;
    }
    if (tag != null)
    {
        pictureBox4.Tag = tag;
    }
    timer1.Enabled = false;
}

Beware, that you will need to update all the code that checks that the data is Bitmap before it arrives at DragDrop ie in DragEnter and write code that handles both Bitmap and Text, otherwise the Drag functionality will break.