How to delete row in DataGridView in Windows Forms (WinForms) application using C# and VB .Net

Please refer this

Using these two links i have created a sample here

using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms.VisualStyles;

C#

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        BindGrid();
    }
    DataTable dt = new DataTable();
    private void BindGrid()
    {
        string constring = System.Configuration.ConfigurationSettings.AppSettings["constr"];
        using (SqlConnection con = new SqlConnection(constring))
        {
            using (SqlCommand cmd = new SqlCommand("SELECT * FROM Employees", con))
            {
                cmd.CommandType = CommandType.Text;
                using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
                {
                    DataTable dt = new DataTable();
                    sda.Fill(dt);
                    //Set AutoGenerateColumns False
                    dataGridView1.AutoGenerateColumns = false;
                    //Set Columns Count
                    dataGridView1.ColumnCount = 3;

                    //Add Columns
                    dataGridView1.Columns[0].Name = "Id";
                    dataGridView1.Columns[0].HeaderText = "Id";
                    dataGridView1.Columns[0].DataPropertyName = "Id";

                    dataGridView1.Columns[1].HeaderText = "Name";
                    dataGridView1.Columns[1].Name = "Name";
                    dataGridView1.Columns[1].DataPropertyName = "Name";

                    dataGridView1.Columns[2].Name = "Address";
                    dataGridView1.Columns[2].HeaderText = "Address";
                    dataGridView1.Columns[2].DataPropertyName = "Address";
                    dataGridView1.DataSource = dt;

                }
            }
        }

        DataGridViewButtonColumn column1 = new DataGridViewButtonColumn();
        column1.Name = "Delete";
        column1.Text = "Delete";
        column1.UseColumnTextForButtonValue = true;
        dataGridView1.Columns.Add(column1);
        dataGridView1.AutoSize = true;
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
        dataGridView1.CellClick += new DataGridViewCellEventHandler(dataGridView1_CellClick);
    }


    // If the user clicks on an enabled button cell, this event handler  
    // reports that the button is enabled.
    void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
    {
        if (dataGridView1.Columns[e.ColumnIndex].Name == "Delete")
        {

            string constring = System.Configuration.ConfigurationSettings.AppSettings["constr"];
            using (SqlConnection con = new SqlConnection(constring))
            {
                using (SqlCommand cmd = new SqlCommand("DELETE FROM Employees where Id = @Id;SELECT * FROM Employees", con))
                {
                    cmd.Parameters.AddWithValue("@id", dataGridView1.Rows[e.RowIndex].Cells[0].Value);
                    using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
                    {
                        DataTable dt = new DataTable();
                        sda.Fill(dt);
                        dataGridView1.DataSource = dt;
                    }
                }
            }
        }
            
    }
}

public class DataGridViewDisableButtonColumn : DataGridViewButtonColumn
{
    public DataGridViewDisableButtonColumn()
    {
        this.CellTemplate = new DataGridViewDisableButtonCell();
    }
}

public class DataGridViewDisableButtonCell : DataGridViewButtonCell
{
    private bool enabledValue;
    public bool Enabled
    {
        get
        {
            return enabledValue;
        }
        set
        {
            enabledValue = value;
        }
    }

    // Override the Clone method so that the Enabled property is copied.
    public override object Clone()
    {
        DataGridViewDisableButtonCell cell =
            (DataGridViewDisableButtonCell)base.Clone();
        cell.Enabled = this.Enabled;
        return cell;
    }

    // By default, enable the button cell.
    public DataGridViewDisableButtonCell()
    {
        this.enabledValue = true;
    }

    protected override void Paint(Graphics graphics,
        Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
        DataGridViewElementStates elementState, object value,
        object formattedValue, string errorText,
        DataGridViewCellStyle cellStyle,
        DataGridViewAdvancedBorderStyle advancedBorderStyle,
        DataGridViewPaintParts paintParts)
    {
        // The button cell is disabled, so paint the border,  
        // background, and disabled button for the cell.
        if (!this.enabledValue)
        {
            // Draw the cell background, if specified.
            if ((paintParts & DataGridViewPaintParts.Background) ==
                DataGridViewPaintParts.Background)
            {
                SolidBrush cellBackground =
                    new SolidBrush(cellStyle.BackColor);
                graphics.FillRectangle(cellBackground, cellBounds);
                cellBackground.Dispose();
            }

            // Draw the cell borders, if specified.
            if ((paintParts & DataGridViewPaintParts.Border) ==
                DataGridViewPaintParts.Border)
            {
                PaintBorder(graphics, clipBounds, cellBounds, cellStyle,
                    advancedBorderStyle);
            }

            // Calculate the area in which to draw the button.
            Rectangle buttonArea = cellBounds;
            Rectangle buttonAdjustment =
                this.BorderWidths(advancedBorderStyle);
            buttonArea.X += buttonAdjustment.X;
            buttonArea.Y += buttonAdjustment.Y;
            buttonArea.Height -= buttonAdjustment.Height;
            buttonArea.Width -= buttonAdjustment.Width;

            // Draw the disabled button.               
            ButtonRenderer.DrawButton(graphics, buttonArea,
                PushButtonState.Disabled);

            // Draw the disabled button text. 
            if (this.FormattedValue is String)
            {
                TextRenderer.DrawText(graphics,
                    (string)this.FormattedValue,
                    this.DataGridView.Font,
                    buttonArea, SystemColors.GrayText);
            }
        }
        else
        {
            // The button cell is enabled, so let the base class 
            // handle the painting.
            base.Paint(graphics, clipBounds, cellBounds, rowIndex,
                elementState, value, formattedValue, errorText,
                cellStyle, advancedBorderStyle, paintParts);
        }
    }
}

Screenshot