Question

On gridview editing event I have :

string name = GridView1.Rows[e.NewEditIndex].Cells[1].Text;
string subname = GridView1.Rows[e.NewEditIndex].Cells[2].Text;

I want to get those values from variables in row updating event gridview but I don’t know how to access them.

thanks

Answer 1

Use the RowIndex property

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{    
    GridViewRow row = GridView1.Rows[e.RowIndex];
    string name     = row.Cells[1].Text;
    string subname  = row.Cells[2].Text;
}

To get the old/new values of an updating row, you can also use the GridViewUpdateEventArgs.OldValues and GridViewUpdateEventArgs.NewValues Dictionaries.

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{    
    string oldName     = e.OldValues["Name"]; 
    string oldSubname  = e.OldValues["SubName"];
    string newName     = e.NewValues["Name"];
    string newSubname  = e.NewValues["SubName"];
}

To detect only the changed values(not tested):

var changed = new Dictionary<Object, Object>();
foreach (DictionaryEntry entry in e.NewValues)
{
    if (e.OldValues[entry.Key] != entry.Value)
    {
        changed.Add(entry.Key, entry.Value);
    }
}

or with LINQ:

changed = e.NewValues.Cast<DictionaryEntry>()
          .Where(entry => entry.Value != e.OldValues[entry.Key])
          .ToDictionary(entry => entry.Key, entry => entry.Value);

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.rowupdating.aspx