Okey, so heres the deal, we just started on C#, as you might understand I'm a newbie!

I got a input field, four buttons and four outputfields. When I type something in the input field and click button 3 the text is gonna come in outputfield 3. same goes for every other button.

Tekst<asp:TextBox ID="txtbInput" runat="server"></asp:TextBox>
<br />
<asp:Button ID="btnKnapp1" runat="server" Text="Knapp1" OnClick="Button1" />
<asp:Button ID="btnKnapp2" runat="server" Text="Knapp2" OnClick="Button1" />
<asp:Button ID="btnKnapp3" runat="server" Text="Knapp3" OnClick="Button1" />
<asp:Button ID="btnKnapp4" runat="server" Text="Knapp4" OnClick="Button1" />
<br />
En<asp:TextBox ID="txtbUtskrift1" runat="server"></asp:TextBox><br />
To<asp:TextBox ID="txtbUtskrift2" runat="server"></asp:TextBox><br />
Tre<asp:TextBox ID="txtbUtskrift3" runat="server"></asp:TextBox><br />
Fire<asp:TextBox ID="txtbUtskrift4" runat="server"></asp:TextBox>

protected void Button1(object sender, EventArgs e)
{
Button button = (Button)sender;
txtbInput.Text = button.ID;
}

so what this do for me is input the ID of each button into the input field. So I've looked into Switch case, but I cant figure out how to do this! I dont want you guys to simply do the task for me, but give me heads up and point me in the right direction!

Thanks in advance!