Error :(System.Web.UI.HtmlControls.HtmlIframe) is not compatible with the type of control (System.Web.UI.HtmlControls.HtmlGenericControl) in VS2017

ASP.NET Leave a comment

Reason for the above error is I have my project in .NET framework 3.5 and I update it to .NET framework 4.5,

Solution for the above error is:
We need to change the *.designer.cs file reference from:

System.Web.UI.HtmlControls.HtmlIframe

to

System.Web.UI.HtmlControls.HtmlGenericControl

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