Contents tagged with .NET
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Call a Function With Retry Using Generics
What if you like to call a web service and retry the call again until response? let me show you a nice way to call a function with retry until you retrieve what ever is needed from the function. This could be achieved by using generics especially by extending the Func<T> delegate; check the code below;
1: public static class MyExtensions
2: {3: public static T WithRetry<T>(this Func<T> action)
4: {5: var result = default(T);
6: int retryCount = 0;
7: var succesful = false;
8: do
9: {10: try
11: {12: result = action();13: succesful = true;
14: }15: catch (Exception ex)
16: {17: retryCount++;18: }19: } while (retryCount < 3 && !succesful);
20: return result;
21: }22: }
In the code you can see that we extended the Func that will return an object with type T. This function will keep trying for 3 times but you might change it to keep it trying until it achieve the goal. and here is how to use it
1: MyService ser = new MyService();
2: Func<MyService.contentSetList> fCon = () => ser.get(testlist.ToArray<string>());
3: var con = fCon.WithRetry();4: return con;
hope this helps.
References: the original code belongs to Scott Allen at his course C# Fundamentals - Part 2 @ http://www.pluralsight-training.net. thanks Scott.
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AppFabric
A nice Microsoft Windows Server AppFabric introducing slide show http://bit.ly/afNVHi . do not hesitate to ask me about appfabric and i’ll try to help you as i can to install and operate it.
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Parent – Child in recursive data table with LINQ
If you have a data table which looks like this one below and holds child,parent rows at the same table;
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Using 2 Tables Joined with LINQ as data source without anonymous cast error in databond method
Yesterday one of our project team member faced a challenge of using an anonymous data that is returned from joining 2 typed data tables with LINQ. The problem is not how to use the data, the problem was how to be able to cast and use the data in Repeater ItemDataBond method without having “<>f__AnonymousType0….” cast error. below is the join query (tables used are typed) :-
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Extend Forms Authentication Ticket Depending on Session Time Out
I know that this subject is not new! but last week one of my students asked me about how we can extend client authentication ticket according to session time out. We should do some coding to achieve such a goal.
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.net Workshop
while surfing i found out that there is people that love to share knowladge. one of them is Richard Grimes. He shared a full workshop about three subjects;
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VS 2008 SP1 Released!
Microsoft Visual Studio 2008 Service Pack 1 released.
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When TO SOA
In the last few years developer start to use SOA in many applications, because of that many new developers are too much excited to use SOA and apply the architecture of it to their applications. I found out that many applications start to be more complicated (while the application is too much simple without SOA). So, when to use SOA.
First we must know what is the meaning of SOA (not as Service-oriented architecture); it’s a kind of architecture to be used over software and web applications to increase the applications flexibility according to business requirements. SOA gives the ability to software and applications to exchange data and functionality by using xml services over the network.