Hi Vinay,
I got the same problem when I created a client application to get access SharePoint list. I fixed that problem making changes on the project properties (Visual Studio)
Project Properties> Publish> Application Files>
Added
Microsoft.SharePoint.Client.dll (Include)
Micrtosoft.SharePoint.Client.Runtime.dll(Include)
After I publish the client application, I did not get any error.
I hope this help you.
Thanks.
Jhonny Marcelo