Comments by ellisbay (Top 17 by date)

I updated my code. Hope it will help.

What I have done so far. I add dateTimePicker on my form..
Made query something like "jlopez788" suggested. And it works well. But the final touch have to be done. I have to show in my grid people who should/ can give blood that month.
So, to do that, I have one function which will calculate when is the time for next donation (Male blood donor can give blood each 3 months, female blood donors each 4 months).
Here is that function:
public static DateTime get_Schedule(string Gender, DateTime date)
{
DateTime dt;
if (Convert.ToString(Gender) == "Female")
{
dt = date.AddMonths(4);
}
else
{
dt = date.AddMonths(3);
}
return dt;
}
But here is a problem. How can I compare this function to dt.Month value?!

This doesn`t work. Any suggestions, anyone?

Not sure. What you suggest to put in combobox? List of month numbers (1-12) or list of month strings (January...December)?
And also this thing: For example, if is DateOfDonation 10.07.2012. for DonorID 10,he should be shown in grid when someone select November in combobox (Donor can give blood every 4 months).

Works like a charm! Thank you very, very much. So simple and elegant, was doing something like this, but inside this function, so didn`t work as well. This is great!

No, no, of course not. I`m aware that`s not possible :) I just want to display in datagridview this information. I`d like to have output, for example, lik|e this:

NAME ADDRESS TELEPH APPOINT. NEXT APP
John Doe | Street no 23 | 344/333 | 10/7/12 | 10/10/12
Jane Doe | Street no 23 | 344/333 | 10/7/12 | 10/11/12

Works only with one textbox :/
I really don`t know where is a problem.

That was mistake while I was writing.. sadly, that`s not the problem..

Problem is that I don`t have a where clause in my query...
I`m showing all products in that listview.

Not working.. in query "a" if I select SingleOrDefault() foreach loop doesn`t work.
And If I don`t select SingleOrDefault(), I have to write myOrder.ShoppingCartFK=item.id;
In second case it builds, but when I click on button show error on "dc.SubmitChanges()".

Another idea?

THANK YOU very, very, very much!!! :)))
It works like charm.. :)

Followed your steps, and in row_command function just wrote this:

if (e.CommandName == "EDI")
{
int id = int.Parse(gv_korpa.Rows[0].Cells[0].Text);

AddItem(id);
gv_korpa.DataBind();
}

Thank you again!

You mean like this?

protected void gv_korpa_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int Id = int.Parse(gv_korpa.Rows[e.RowIndex].Cells[0].Text); //id cell
int product = int.Parse(gv_korpa.Rows[e.RowIndex].Cells[6].Text);// quantity cell
AddItem(Id, product);
gv_korpa.DataSource = KorpaController.prikaziKorpu(Session["PrijavljeniKorisnik"].ToString());
gv_korpa.DataBind();
}
?
Now working :(