Question

I have a gridview:
A column ( type int )
How can I get a value from a cell of current editing row.
How to get the value of the cell with the type int then the value + 1 ?

Answer 1

Handle the RowUpdating-event which occurs when a row’s Update button is clicked, but before the GridView control updates the row. When you don’t use TemplateFields you use the cell’s Text property, otherwise use FindControl to get a reference to your controls.

protected void GridView1_RowUpdating(Object sender, GridViewUpdateEventArgs e)
{
    GridViewRow currentRow = ((GridView)sender).Rows[e.RowIndex];
    String intColumnText = currentRow.Cells[5].Text; //assuming it's the first cell
    int value;
    if(int.TryParse(intColumnText, out value))
    {
        //if you want to increment that value and override the old
        currentRow.Cells[5].Text = (value++).ToString();
    } 
}