How To Store The Database Connection String

Feb 16, 2010

I know that most people store the Database connection string inside the web.config file.

But my question is if we move the web.config file from dev to prod then we have to change the connection everytime.

how can we have a connection string that we do not have to change when we move our code from dev to prod.

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We can store Connection String in Web.config file in two ways One is

<connectionStrings>
<clear/>
<add name="LocalSqlServer"
connectionString="Data Source=(local);Initial Catalog=aspnetdb;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>

Other One is

<appSettings>
<add key="ConnectionString"
value="server=localhost;database=Northwind;uid=sa;password=secret;" />
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Now I want to know What is difference between these two approach? Which one is better way? What are their limitations?

UPDATE:Can you explain that <connectionString> has any significant advantage over <appSetting>?

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Code:

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[URL]

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[Code]....

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On shared hosting with 123-reg.

The SSE Provider did not find the database file specified in the connection string. At the configured trust level (below High trust level), the SSE provider can not automatically create the database file.Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.

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Source Error:

[Code]....

Stack Trace:

[Code]....

heres my connection strings im using:

[Code]....

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[Code] ....

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[code]...

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[Code]...

i tired this but its giving error

[Code]....

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