Datagridview SelectionChanged event based on row selection

Question

I have a DataGridView on a TabPage. When the user clicks on a row, a second DGV appears. Each row is associated with its own DGV filled with data. What I want is for when the user goes from one row to another, the DataGridView changes too. So far I've tried the SelectionChanged event but I don't want the DGV to reload in the event that the user clicks on a separate cell in the same row. Any help would greatly be appreciated.

void dgv1_CellClick(object sender, DataGridViewCellEventArgs e)           
{    
    int rowIndex = dgv1.Rows[e.RowIndex].Index;

    if (dgv1 == null)
        return;
    if (dgv1.Rows[e.RowIndex].Cells[rowIndex].Selected == true);
    {
        dgv2.Size = new Size(dgv2.Width + 800, dgv2.Height);
        dgv2.Location = new Point(0, 500);   

        tp.Controls.Add(dgv2);

        Console.WriteLine("Row clicked");
    }
}

-Tatiana

Can you create a property that represents the currently selected row, and then check if the newly selected row is the same or not? — dursk
There actually is a property for the currently selected row which is dgv.CurrentRow the problem is how to check for the newly selected row. Secondly, CurrentRow is of type DataGridViewRow which cannot be converted to type int and therefore I get an error when trying to compare it to any int. — Tatiana Laurent
DataGridViewRow has an Index property, so it'd be dgv.CurrentRow.Index. MSDN: msdn.microsoft.com/en-us/library/… — dursk
use e.rowIndex inside rowenter and rowleave. they trigger when you navigate to a row up or down (doesnt require you to enter in to editing mode of that cell/row ) gotcha if you use dgv.currentRow it will give you previous row it may confuse you. be sure to use e.rowIndex that comes from event. — bh_earth0

Tatiana Laurent Tatiana Laurent · Accepted Answer · 2014-01-14T23:31:59

    int curRow = -1;

    private void dgv1_SelectionChanged(object sender, EventArgs e)
    {
        if (dgv1.CurrentRow.Index != curRow)
        {
            curRow = dgvPatientDetail.CurrentRow.Index;        
        }

Datagridview SelectionChanged event based on row selection

2 Answers