Get data from each row of a column in C#

Question

Here’s the thing, I got a DataGridView with several columns. In each row of this DataGridView a program installation path will be shown. With this value displayed, I would like to use it to get the size of that folder and put it in a new column.

I have a method to calculate the size of a string:

private static long ObterTamanhoDiretorio(string tamanhoDir)
{
    DirectoryInfo dire = new DirectoryInfo(tamanhoDir.ToString());
    return dire.EnumerateFiles("*.*", SearchOption.AllDirectories).Sum(fi => fi.Length);
}

I don’t know if it’s something like this I have to use.

foreach (DataGridViewRow item in dataGridView1.Rows)
{

}

What I’d like to know is how to get that value by seeing on each line. If you have any ideas, thank you.

Answer 1

If you want to perform this action while loading the data you can use the event 'Onrowdatabound':

  gdvView.DataSource = Lista;
  gdvView.DataBind();


protected void GdvViewOnRowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Cells[0].Text = "dados coluna 1";
            e.Row.Cells[1].Text = "dados coluna 2";
        }
    }

If you need to make the change after the Grid is filled, you can use the for or foreach.

  for (int i = 0; i < gdvView.Rows.Count; i++)
        {
            gdvView.Rows[i].Cells[0].Text = "novos dados";
        }

Or

 foreach (var row in gdvView.Rows)
        {
            ((gdvView)row).Cells[0].Text = "testeeeee";
        }

Answer 2

Using the @Cleidson_eng example, I did it in an application of mine to recover the values and go adding and at the end present the final value. If I help you in any way, follow:

protected void gvInscricoesCurso_RowDataBound(object sender, GridViewRowEventArgs e)
    {
      int total = 0;
      for (int i = 0; i < gvInscricoesCurso.Rows.Count; i++)
      {
        total += Convert.ToInt32(gvInscricoesCurso.Rows[i].Cells[1].Text);
        spanTotalInscritosGeral.InnerText = total.ToString();
        divTotalGeral.Visible = true;
      }
    }