Showing WebAPI Validation Errors with ExtJS 6

Let’s say you use model validation with ASP.NET WebAPI and you are serving a client side application written in Sencha’s ExtJS.  To show those errors like this:

image

You need to add a ValidationActionFilter to your startup code as follows:

And then, you can have your ExtJS code do something like the following to display the error:

And you can run it yourself at the Sencha Fiddle:

HTH’s

About Peter Kellner

Peter is a software professional specializing in mobile and web technologies. He has also been a Microsoft MVP since 2007. In addition, he's a multi-course video author at Pluralsight. To read more about Peter Kellner and his experience click here. For information about how Peter Kellner might be able to help you with your project click here.

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