Monthly Archives: May 2017

System.Data.Sqlclient for .NET Core

Posted on May 23, 2017 by chanmingman

This is a quick tip for getting System.Data.Sqlclient for .NET Core console app. When you look for EntityFramework in Nuget then you will get the error “Package restore failed. Rolling back package changes for ‘ConAppNetCore’”. Get the Microsoft.EntityFrameworkCore. This one … Continue reading →

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Update from Visual Studio 2017 15.0 to 15.2

Posted on May 20, 2017 by chanmingman

The short blogs shows you one of the ways to upgrade from Visual Studio 2017 15.0 to 15.2. Click on the small flag at your right top corner then you will see “Visual Studio Update” is available. Click on it. … Continue reading →

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Shut down without update in Windows 10

Posted on May 18, 2017 by chanmingman

Finally you can shut down your Windows 10 without Update. But you need to have Windows 10 1703.

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Why use Java

Posted on May 17, 2017 by chanmingman

Introduction Java is an object-oriented programming language that was first released by Sun Microsystems in 1995.  Back in the 90s all the programming languages were not GUI friendly. The only GUI friendly programming language was Visual Basic. Again, back in … Continue reading →

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Oracle Provider for OLE DB User Name and Password grey out SSIS

Posted on May 16, 2017 by chanmingman

This short blog let you know one of the possible reasons why the User Name and Password grey out in SSIS package. This is because the Oracle Developer Tools for Visual Studio or ODAC. You can download it here  http://www.oracle.com/technetwork/database/windows/downloads/index-101290.html.

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Windows 7 cannot Windows Update

Posted on May 15, 2017 by chanmingman

This short blogs show you how to update your Windows 7 since the Wanna Cry Ransomware is attacking badly at this time. There are pretty of links out there but I remember this official one work for me. Windows Update … Continue reading →

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Query Designer grey out in Visual Studio

Posted on May 14, 2017 by chanmingman

This blog shows you why the Query Designer is disable or grey out in Visual Studio. When you get the View menu to open the Query Designer then you might realize all the buttons in Query Designer is grey out … Continue reading →

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Oracle Enterprise Manager Database Control URL not accessible

Posted on May 10, 2017 by chanmingman

This short blog showing you how to access to Oracle Enterprise Manager Database Control URL when you install an Oracle 11g database server in your Windows 10 PC. After you completed the installation of Oracle 11g, you got a link … Continue reading →

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System.NullReferenceException: ‘Object reference not set to an instance of an object.’ For array in the class

Posted on May 10, 2017 by chanmingman

This blog shows you how to resolve the above error that the normally C# beginner will struggler with. If you read and type the code below then compile it. It will not get any error. class whyarray {     private … Continue reading →

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