问题
In Visual Studio 2012, it appears that only maybe a third of the 20 or so C# project types support using Shift+Alt+D to open the "Data Sources" window (and none that I've found ever display the mythical "Data" menu bar option).
Is there any sort of guide as to which project types will allow you to work with data sources?
Also, is there any way to "adjust" the features of a project after it's been created?
Update: See my answer below for how to add the Data Sources function to an existing project.
回答1:
I believe you are looking for this page:
http://msdn.microsoft.com/en-us/library/yft2c9ad.aspx
To quote msdn: "You can add a data source to a project only if it supports creating and working with data sources. For example, you can't open the Data Sources window in a project for a Windows Store app."
Basically, if using a database seems logical in your application, you can probably use one.
To answer your question about the "mythical 'Data' menu bar option", here's how you access it:
You just have to select "View", then "Other Windows", and finally "Data Sources"
And to answer your final question about, "Also, is there any way to 'adjust' the features of a project after it's been created?"
Yes, yes there is. If you mean as a compiled executable, one could simply decompile the project or use an ILcode editor. If you mean as a solution in visual studios, using the solution explorer you can access "My Project" and simply double click that to get a nice little gui for adjusting your project.
EDIT:
For an overload of information about data in visual studios, you can visit: http://msdn.microsoft.com/en-us/library/wzabh8c4.aspx
For more information about just the data source window, you can visit: http://msdn.microsoft.com/en-us/library/6ckyxa83.aspx
回答2:
Aha! There is a way to add data access to a project that lacks it, per: http://msdn.microsoft.com/en-us/library/bb907587.aspx. To quote:
To create a class from a database table
If you are working with a Web site project, and the project does not already have an App_Code folder, in Solution Explorer, right-click the project, click Add ASP.NET Folder, and then click App_Code.
In Solution Explorer, right-click the App_Code folder (for a Web site project) or the project (for a Web application project) and then click Add New Item.
Under Installed templates, select Linq to SQL Classes template, type a name for the .dbml file, and then click Add.
-- The Object Relational Designer window is displayed. [Note that this is the window that Shift-Alt-D displays]
In Server Explorer, drag the database tables or other objects (such as views) that you want to use with LINQ to SQL into the Object Relational Designer window.
-- The tables and their columns are represented as a entities in the designer window.
Save the .dbml file.
This creates .designer.cs or .designer.vb file that is located under the .dbml file. The file contains a class that represents the database and a class that represents the table. The parameterless constructor for the database class reads the connection string from the Web.config file.
(Note that, after performing this procedure you may get a message "The type or namespace name 'Linq' does not exist in the namespace 'System.Data'". The solution to this problem is found here.)
来源：https://stackoverflow.com/questions/22415682/which-visual-studio-project-types-support-shiftaltd-to-open-the-data-sources-w