Error while using SSMS 2016 : Object cannot be cast from DBNull to other types

问题

Can anyone resolve this issue:

SQL Server Management Studio 2016 CTP3 (13.0.900.73) on a Windows 10 Laptop

1. Object Explorer > Server > Databases > Database
2. Right Click - Properties

Instead of getting the Database Properties dialogue box I instead get this pop-up:

TITLE: Microsoft SQL Server Management Studio

Cannot show requested dialog.

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ADDITIONAL INFORMATION:

Cannot show requested dialog. (SqlMgmt)

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Object cannot be cast from DBNull to other types. (mscorlib)

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BUTTONS:

OK

Edit:

Issue is occuring on-Prem with both physical and virtual machines. It is also happening on Amazon RDS servers.

If I use another laptop with Win 7 and SSMS 2014 I don't get any issues.

If I remove SSMS 2016 and install SSMS 2014 I get graphics issues as SSMS 2014 dialogue boxes get distorted as I have a high definition computer and SSMS 2014 throws a shoe.

回答1:

This appears to be the same issue that is logged in this Microsoft Connect item. The fix for this issue should be available in the SSMS January preview release.

回答2:

I've seen this happen if the database is in 'Recovery' mode or the DB's files are not accessible because of permissions or something like a disconnected drive.

Agreed that the dialog they show really isn't helpful.

来源：https://stackoverflow.com/questions/34750903/error-while-using-ssms-2016-object-cannot-be-cast-from-dbnull-to-other-types