Introduction
In this article we will see how we can cancel a running task. Task class in .net library is extremely useful when you want to handle thread. Developers don’t have to create or maintain thread explicitly. Methods executed by a Task typically execute asynchronously and it uses background threads from the thread pool. There is no direct way of cancelling a task. .Net framework provides CancellationToken which we can use to cancel a task with limitation. We will first look at how to cancel...
Sunday, 7 June 2015
Introduction
While I was working with WCF service application, I came across a situation where I am hosting my WCF service in a console application and I don't want the console application to show up when my service is up. I fixed it this by Pinvoke a call to FindWindow() to get a handle to your window and then call ShowWindow() to hide the window. I have created a sample code to show how I did this. It is as given below.
using System;
using System.Runtime.InteropServices;
using System.Threading;
namespace TestShowHideConsole
{
internal...
Introduction
This error can happen when you use Microsoft Team Foundation Server(TFS) and if you don’t have proper binding files. This can happen if the solution is new in TFS and there are no binding files associated with it. You can easily fix this. To fix it, you have to go to
File -> Sourcecontrol-> change source control.
Click on the project which don’t have binding and say bind. This will automatically bind your solution with the source control. Do the same for the entire project which don’t have proper bindin...
ContractFilter mismatch at the EndpointDispatcher
A "ContractFilter mismatch at the EndpointDispatcher" can happen because the client could not process the message because no contract claimed it. This can happen because of the following reasons:
Your client and the service have different contracts in between.
Your client and service is using a different binding in between.
Your client's and service's message security settings are not consistent in between.
Most of ContractFilter mismatch at the EndpointDispatcher bugs are because you use...
Introduction
This post is for those who are working with WCF and at times sulking because of errors which does not show up and who spends lots of time debugging what is going wrong with their service and client.
I was working with a WCF service and I came across a situation where my client application is trying to connect to service via proxy and client is waiting for the call to return and it never returns finally it times out. I was not having any clue what was happening. I had application level tracing which was not able to track anything....
Introduction
This fix explained here is helpful if you are using WCF and when you try to access the service, the client throws an exception like "An endpoint configuration section for contract ‘YourContract' could not be loaded because more than one endpoint configuration for that contract was found. Please indicate the preferred endpoint configuration section by name".
How to fix this exception
WCF service can expose more than one endpoint and client can use any of this endpoint but not more than one at a time. This type...
Introduction
WPF applications support rich media and graphics, this require styles and styles can be reusable across different window or element in WPF. Here we need a mechanism by which we can share this style across different window or say application. By adding the style in application resource file, we can share it across windows in application but not across application. Here reusable styles need to be utilized and in a managed way. Here WPF provide an easy way to manage these styles and other reusable resources which can be used across...
Introduction
This post will help you in binding a command to a button, where the button is defined in a template say a data template. With normal command binding it won’t work. We need some sort of workaround to achieve this.
How to fix this.
Here the requirement is to bind a command to an element which is defined in a template. When we do a normal command binding, it is not aware of the data context and will not resolve. We need to provide the binding with the data context. This can be achieved in many ways say you can do
<Button...
Introduction
In this post we will see how to fix the exception due to mixed mode assembly while working with version 4.0 of runtime.
Background
I was working with a project which uses an older mixed mode assembly and I got an exception like mixed mode assembly is built against another version of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information. When I was able to fix this, I felt like this should be shared with all so that people can save their time.
Using the code
Mixed mode assembly is...
Introduction
In this post we will see how to fix the exceptions like this which hapens even after adding proper dll(s). Here in this post we will see how to fix exception, "The type or namespace name Data does not exist in the namespace Microsoft.Practices.EnterpriseLibrary (are you missing an assembly reference?)"
Background
I was working on a project when I encountered one exception which was The type or namespace name 'Data' does not exist in the namespace 'Microsoft.Practices.EnterpriseLibrary' (are you missing an assembly reference?)
I...
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