C#

foreach(Control ctrl in Controls) {
    PictureBox pb=ctrl as PictureBox;
    if(pb!=null && pb.Tag=="1") pb.Image=someImg;
}

private void DataGridView_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
            DataGridView dgv = (DataGridView(sender;

            // do whatever you want here dgv points to the grid that had its row clicked
            dgv.CurrentRow.Cells["Name"].Value = "Fred"; // or whatever
}

dataGridTicketInformation.RowHeaderClick += DataGridView_RowHeaderMouseClick;

dataGridTicketInformation.RowHeaderClick -= DataGridView_RowHeaderMouseClick;

Mycroft Holmes wrote:

I presume I should dispose each event on each control when leaving the form!

public class CustomRowEventArgs : EventArgs
{
    DataGridView grid;
    public DataGridView Grid
    {
        get { return grid; }
    }
    public CustomRowEventArgs(DataGridView dgv)
    {
        grid = dgv;

    }
}

private void dataGridTicketInformation_DoubleClick(object sender, CustomRowEventArgs e)
{
    MessageBox.Show("DoubleClick Sent");
}

dataGridTicketInformation.DoubleClick += new System.EventHandler(dataGridTicketInformation, new CustomRowEventArgs(dataGridTicketInformation));

dataGridTicketInformation.DoubleClick += new System.EventHandler(dataGridTicketInformation, new CustomRowEventArgs(dataGridTicketInformation));

dataGridTicketInformation.DoubleClick += new System.EventHandler(dataGridTicketInformation);

***** See below for where to put it

DataGridView dataGridTicketInformation = new System.Windows.Forms.DataGridView();
dataGridTicketInformation.Name = "dataGridView" + tabIndex.ToString();
dataGridTicketInformation.Size = new System.Drawing.Size(401, 201);

// First we need to add a column
dataGridTicketInformation.Columns.Clear();
dataGridTicketInformation.Columns.Add("Name", "Name");
dataGridTicketInformation.Columns[0].Width = 301;

dataGridTicketInformation.Columns.Add("Data", "Data");
dataGridTicketInformation.Columns[1].Width = 100;

// Clear all the old Data first
dataGridTicketInformation.Rows.Clear();

// ***************************************
//              HERE (ish)
// ***************************************
dataGridTicketInformation.DoubleClick += new System.EventHandler(dataGridTicketInformation);

DataGridView dgv = (DataGridView)sender;

dataGridTicketInformation.DoubleClick += new System.EventHandler(dataGridTicketInformation_DoubleClick);