Difference between appSettings and Connection Strings? [Resolved]

Posted by Amatya under .NET Framework on 2/18/2016 | Points: 10 | Views : 1043 | Status : [Member] | Replies : 4
What is the Difference between appSettings and Connection Strings?

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mail Id ' adityagupta200@gmail.com
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Posted by: Rajnilari2015 on: 2/18/2016 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 50

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Both appears in the config file.

In the Connection Strings we specify the database connections e.g.


<connectionStrings>   

<add name="TestConnection" connectionString="Data Source=ServerName;Initial Catalog=DBName;User ID=LoginName;Password=DBPassword;"providerName="System.Data.SqlClient" />

</connectionStrings>


In appSettings section we specify the custom application settings e.g.

<appSettings>
<add key="SmtpUser" value="test@test.com" />
<add key="SmtpPassword" value="password" />
</appSettings>


Hope this helps

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RNA Team

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Posted by: Amatya on: 2/18/2016 [Member] Silver | Points: 25

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What is Custom application settings.. However i can specify the database connections in appSetting, then what is actual use of Connection Strings?

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mail Id ' adityagupta200@gmail.com
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Posted by: Rajnilari2015 on: 2/18/2016 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25

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@Amatya,

The connectionString section gives strongly typed access to the connection strings through the ConfigurationManager class.

To read values from Connection strings

System.Configuration.ConfigurationManager.ConnectionStrings["TestConnection"].ConnectionString;


AppSettings is meant to store general/custom settings

To read values from AppSettings

System.Configuration.ConfigurationManager.AppSettings[key]


Though we can however store the values of database connections in AppSettings, but if you observe properly, you can find out that there is a specific element (providerName="System.Data.SqlClient") for it in connectionStrings

But app settings is only key-value pair type.

Please let us know if this clears the doubt.

Thanks

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Thanks & Regards,
RNA Team

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Posted by: Amatya on: 2/18/2016 [Member] Silver | Points: 25

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1 more question dude...
Can you give the Example of Key value pair examples in appSetting and where it helps and whats its use..

<appSettings>
<add key="SmtpUser" value="test@test.com" />
<add key="SmtpPassword" value="password" />
</appSettings>



You have provided the Example but what it is doing really ?

Thanks for you quick answers for my question :)

Feel free to share informations.
mail Id ' adityagupta200@gmail.com
Thanks

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