问题
I'm new to ASP.NET-ville, be gentle.
I have been troubleshooting a ASP.NET setup, where the server/database values are changing, therefore web.config needs to be updated.
There are multiple <add name="NameXYZ" connectionString="blah" /> instances (multiple ASP.NET components), but some of these are marked up differently to others.
I've got the following provided:
<add name="CONNECTION-B" connectionString="metadata=res://*/ZZZZ.ssdl;provider=System.Data.SqlClient;provider connection string="Data Source=XXX;Initial Catalog=YYY;Persist Security Info=True;User ID=AAA;Password=BBBB;MultipleActiveResultSets=True"" providerName="System.Data.EntityClient" />
<add name="CONNECTION-A" connectionString="server=XXX;database=YYY;user id=XXX;password=BBB" />
I've used substituted values in the above, making the assumption that for both format types:
- XXX is the server (MSSQL host)
- YYY is the database name
- AAA is the database user, and
- BBB is the user password.
(ZZZZ is a pipe-delimited list of something)
Questions are as follows:
A) Is my assumption of synonymous connection string terms accurate? (Data Source <=> server, database <=> initial catalog)
B) Are there any syntax errors in the markup? Some MSDN documents I've looked up use double, single, and " marks interchangeably.
回答1:
There are two different types of connection strings here. The best bet (IMO) is to have a read up in the docs -
The first is an ADO.Net connection string: http://msdn.microsoft.com/en-us/library/ms254500.aspx
The second is an Entity Framework connection string: http://msdn.microsoft.com/en-us/library/cc716756.aspx
It's all explained in those two links, certainly clearer than I can explain it!
回答2:
A great source of connection string information can be found here:
http://www.connectionstrings.com/
回答3:
I felt the need to post this since i also had some problems with this and later on discovered that there's a difference in connection string requirements for codefirst/model/database approaches:
MS Blog post about configuration settings for entitiy framework connection strings
来源：https://stackoverflow.com/questions/6148839/asp-net-connection-string-metadata-syntax