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I wanted to try out Blazor. I've installed .NET Core 3.0 preview 5 SDK, Blazor VS extension to enable project templates. I can create Blazor project, but I can't run it - I constantly get this notification. enter image description here

In some tutorials I see that there should be a checkbox in VS options - to enable using of preview SDKs.

But it's not there in VS2019! Version is 16.1.1

enter image description here

Pavel Evdokimov
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    Try searching for "preview" in the options dialog. I think they moved it around. – Kirk Woll May 27 '19 at 13:56
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    Pavel, are you using the preview version of Visual Studio 2019? If you're not then you should install it. Preview is recommended for Blazor development. Also if you're using Preview this option is on by default. – Chris Sainty May 27 '19 at 14:01

2 Answers2

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Thanks to @Kirk Woll. They moved this checkbox indeed. enter image description here

Pavel Evdokimov
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  • I have checked that option and I have installed .net core 3.0.100-previes9-014004 . but when I create a new web Asp.Net core project in VS 2019 I have not .net core 3 to select. – kintela Sep 05 '19 at 14:43
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If you are using the preview channel for vs 2019 then it is on by default: enter image description here

jazb
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