void UpdateNumberText(IAsyncResult ar)
{
double result = 0;
string opcode = (string)ar.AsyncState;
try
{
// Harvest the results
switch (opcode)
{
case "+":
result = client.EndAdd(ar);
break;
case "-":
result = client.EndSubtract(ar);
break;
case "*":
result = client.EndMultiply(ar);
break;
case "/":
result = client.EndDivide(ar);
break;
}
// Show the result
_numberTextBlock.Text = result.ToString();
lock (this)
{
// Get the identity
if (!identityRetireved)
{
client.BeginGetIdentity(IdentityCallback, null);
identityRetireved = true;
}
}
}
catch (UserCancellationException ex)
{
_numberTextBlock.Text = "User Cancelation: " + ex.Message;
}
catch (UntrustedRecipientException ex)
{
_numberTextBlock.Text = "Untrusted Recipient: " + ex.Message;
}
catch (ServiceNotStartedException ex)
{
_numberTextBlock.Text = "CardSpace Service Not Started: " + ex.Message;
}
catch (SecurityNegotiationException ex)
{
_numberTextBlock.Text = "Security Negotiation: " + ex.Message;
}
catch (IdentityValidationException ex)
{
_numberTextBlock.Text = "Identity Validation: " + ex.Message;
}
catch (Exception ex)
{
_numberTextBlock.Text = "Exception: " + ex.Message;
}
}
