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 for the past 7 years. 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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