wrap asynchronous calls in synchronous calls

Hi all,

I have a general question on how to hide asynchronous calls from a user:
My user invokes a method like this
public Customer GetCustomer(int id);

This method calls an asynchronous service which has the following method+event
public void GetCustomer(int id)
public event EventHandler CustomerReceived

The event is fired when the GetCustomer call has finished.

What I want to do is as follows:

I want to pack the asynchronous call into the method which is being called by my users.

Can anyone of you give me a hint

Regards,
David

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wrap asynchronous calls in synchronous calls

Alcide

Markku, this isn't a great solution. You should use a ManualResetEvent for this instead. Here is the you code modified:

private ManualResetEvent _customerReceived = new ManualResetEvent( false );
private void button1_Click(object sender, EventArgs e)
{
_async = false;
_customerReceived.Reset();
_customer.GetCustomer(1);
_customerReceived.WaitOne();
Message( "Customer received!" );
}
void customer_CustomerReseived(object sender, EventArgs e)
{
// Make something here
_customerReceived.Set();
}

Biceps
Thanks

Every day I learn somting new.
al_puff
Hi David

I test this kind of solution and I this it work OK.

private void button1_Click(object sender, EventArgs e)

{

_async = false;

_customer.GetCustomer(1);

while (!_async) ;

MessageBox.Show("Customer reseived");

}

void customer_CustomerReseived(object sender, EventArgs e)

{

// Make something here

_async = true;

}

Yours

Markku
JLarkin
Hi PJ,

thanks for this solution, this looks really awesome!
I will test it now...

Thanks,
David
wrap asynchronous calls in synchronous calls

Answer this question