"EF Code First" migrations Database migration

1. Open Tool->nuget Program Manager, Package Manager console

The project where the data access context class is to be selected in the default project

My db is under the namespace Codefirst.ui, so choose Codefirst.ui

 

Then execute enable-migrations

If it fails, there is an error that warns you that you are not installing XXXX or missing xxxx (once, the error message is not retained, the next time you have a chance to add),

Need to install

(I don't know what the hell it is);

To the official Web download installation can be http://www.microsoft.com/zh-cn/download/details.aspx?id=30671

If successful, there will be one more folder in the project migrations

2, execute add-migration * * *; the asterisk is a name for this migration

Pm> add-migration useraddfiled

3, execute Update-database

"EF Code First" migrations Database migration