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POWCF - How to hold on to the Channel/Proxy between Begin and End call
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copied!<p>I'm attempting to use the ChannelFactory to call an asynchronous service.</p> <p>The bit I'm unsure of is how to best hold on to the reference to the channel - between the call to BeginSave and then EndSave (which is in the callback method). </p> <p>I'm currently doing this by assigning it to an instance variable, but this doesn't seem ideal. I only want the channel to exist for the lifetime of the call (which I think is best practice i.e. Open, use it, close it). I also want to make sure I'm closing the correct channel, there could be situations where there's more than one in existence.</p> <p>Any examples on how best to do this would be great.</p> <p>Here's my code:</p> <pre><code>public partial class MyForm : Form { ICompanyService m_Channel; public MyForm() { InitializeComponent(); // ChannelProvider is a class I've created which returns a channel created by the ChannelFactory ChannelProvider<ICompanyService> channelProvider = new ChannelProvider<ICompanyService>(); m_Channel = channelProvider.GetChannel(); } private void OnSaveButtonClickAsync(object sender, EventArgs e) { Company company = new Company(); company.BranchId = "A1"; company.CompanyName = "A1 LTD"; m_Channel.BeginSave( company, new AsyncCallback(OnSaveCallback), null); StatusLabel.Text = "Saving..."; } private void OnSaveCallback(IAsyncResult ar) { int result = m_Channel.EndSave(ar); Invoke( new MethodInvoker(delegate() { StatusLabel.Text = result.ToString(); })); } } </code></pre> <p>Many thanks.</p>

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