Display row details of DataGridView on Row click in Windows Forms (WinForms) Application using C# and VB.Net

Here I have created sample that show the DataGridView selected value to textbox. I hope this will help you out. If your requirement is different then please let me know in details with example.

Code

DataTable dt;
public Form1()
{
    InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
    LoadData();
}

private void LoadData()
{
    dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                new DataColumn("Name", typeof(string)),
                new DataColumn("Country",typeof(string)) });
    dt.Rows.Add(1, "John Hammond", "United States");
    dt.Rows.Add(2, "Mudassar Khan", "India");
    dt.Rows.Add(3, "Suzanne Mathews", "France");
    dt.Rows.Add(4, "Robert Schidner", "Russia");
    dgvDetails.DataSource = dt;
}

private void dgvDetails_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    txtId.Text = dgvDetails.Rows[e.RowIndex].Cells[0].Value.ToString();
    txtName.Text = dgvDetails.Rows[e.RowIndex].Cells[1].Value.ToString();
    txtCountry.Text = dgvDetails.Rows[e.RowIndex].Cells[2].Value.ToString();           
}

Screenshot