Creating Draggable Datagridview Table Item on Visual C#

In this tutorial, we will show you the code how to create draggable table content on datagridview so that they can be re-arranged as purpose. Here is the screenshot of the results. 

Let's jump to the code. 

Please note, before implementing the code you must :

1. Create new Windows form application project with the name : "WindowsFormsApplication1"

2. Add datagridview control and rename it as "dataGridView1".

Here is the full 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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            dataGridView1.ColumnCount = 5;
            for (int i=0; i <5; i++) {
                string[] row = new string[] { "Column 0/" + "Row " + i.ToString(), "Column 1/" + "Row " + i.ToString(), "Column 2/" + "Row " + i.ToString() };
                dataGridView1.Rows.Add(row);
            }

            this.dataGridView1.AllowDrop = true;
           
            dataGridView1.CellMouseDown += new DataGridViewCellMouseEventHandler(dataGridView1_CellMouseDown);
            dataGridView1.MouseMove += new MouseEventHandler(dataGridView1_MouseMove);
            dataGridView1.MouseUp += new MouseEventHandler(dataGridView1_MouseUp);

        }


        int dragRow = -1;
        Label dragLabel = new Label();

        private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (dataGridView1.RowCount == 0)
            {
                return;
            }
            if (e.ColumnIndex < 0 || e.RowIndex < 0) return;
            dragRow = e.RowIndex;
            if (dragLabel == null) dragLabel = new Label();
            dragLabel.AutoSize = true;
            dragLabel.Text = "Dragging : " + dataGridView1[e.ColumnIndex, e.RowIndex].Value.ToString();
            dragLabel.Parent = dataGridView1;
            dragLabel.Location = e.Location;
        }

        private void dataGridView1_MouseMove(object sender, MouseEventArgs e)
        {
            if (dataGridView1.RowCount == 0)
            {
                return;
            }
            if (e.Button == MouseButtons.Left && dragLabel != null)
            {
                dragLabel.Location = e.Location;
                dataGridView1.ClearSelection();
            }
        }

        private void dataGridView1_MouseUp(object sender, MouseEventArgs e)
        {
            if (dataGridView1.RowCount == 0)
            {
                return;
            }
            var hit = dataGridView1.HitTest(e.X, e.Y);
            int dropRow = -1;
            if (hit.Type != DataGridViewHitTestType.None)
            {
                dropRow = hit.RowIndex;
                if (dragRow >= 0)
                {
                    int tgtRow = dropRow + (dragRow > dropRow ? 1 : 0);
                    if (tgtRow != dragRow)
                    {
                        DataGridViewRow row = dataGridView1.Rows[dragRow];
                        dataGridView1.Rows.Remove(row);
                        dataGridView1.Rows.Insert(tgtRow, row);

                        dataGridView1.ClearSelection();
                        row.Selected = true;
                    }
                }
            }
            else { dataGridView1.Rows[dragRow].Selected = true; }

            if (dragLabel != null)
            {
                dragLabel.Dispose();
                dragLabel = null;
            }

        }

    }
}
    
    

Okay its finished. Feel free to share to support this page. Thank you.