Help with SelectedTab

I am creating an app that uses tabs. I want to be able to add, edit, and delete on each tab. Basically, I am connected to a sql database, and i want to be able add, edit, and delete items in db and bind to the gridview on a specific tab. I have these three buttons outside of the tabs so they can be used for each one. I am trying to figure out how to use SelectedTab so that the tab I am currently on will be the one that gets changed. Any help is appreciated. thanks

Id create each tab with a tag, so tab one could have the tag 1 and tab two could have the tag 2 etc..

Then the following code would loop round the entire tab collection and then all of the control on the selected tab. If someone knows a better way, please correct me.

string tag = tabControl1.SelectedTab.Tag.ToString();

foreach (TabPage tab in tabControl1.TabPages)
{
if (tab.Tag.ToString() == tag)
{
foreach (Control ctrl in tab.Controls)
{
if (ctrl.GetType() == typeof(TextBox))
{
ctrl.Text = "Tab page updated!";
}
}
}
}