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Is it possible to update a connection string stored in the Web.config file programatically? If Yes, then how?

Posted By :Virendra Dugar     Posted Date :October 22, 2009    Points :10   Category :ASP.Net 

Create a Configuration object. Then, update the connection string using the ConnectionStrings collection. Finally, call Configuration.Save.

You can also find related Interview Question to Is it possible to update a connection string stored in the Web.config file programatically? If Yes, then how?  below: 

How you will write a Connection String in web.Config fiel?

Ans) Then write below lines of code:

add name="sqlconnectionstring" connectionString="Data Source=INTHIYAAZ;Initial Catalog=DB;User ID=sa;Password=sa" />

Where do you store connection string?

Database connection string can be stored in the web config file.
The connection string can be stored in the WEB.Config file under
element. (More...)

What does connection string consist of?

The connection string consists of the following parts:
In general:

Server: Whether local or remote.

Uid: User Id (sa-in sql server)

Password: The required password to be filled-in here

Database: The database name. (More...)

what is the use of using web.config file

By using this web.config file we can store sqlconnection string.This SqlConnection String can be accessed any where in your application.for security purpose of connection string also we can use web.config. (More...)

Can we have more than one web.config file in our application?

Yes,we can create or use more than one web.config file in our application. (More...)

if we remove a web.config file from the application , is this application will work?

It Depends on coding if we used something that is required to pioc values from configuration file then its required otherwise we can run our application without web.config. (More...)

Can i add more than 1 web.config file in a single application?

Yes, it is possible to add more than 1 web.config file in a single application. (More...)

Is it possible to add multiple Machine.config file?

No, it is not possible to add more than 1 machine.config file. if we want to overwrite any setting than that can be achieve with the help of web.config. (More...)

To perform asynchronous data access, what must be added to the connection string?

Select Correct Answer.

1. BeginExecute=true
2. MultiThreaded=true
3. MultipleActiveResultSets=true
4. Asynchronous=true

Correct Answer:
4. Asynchronous=true (More...)

How do you retrieve the customized properties of a .NET application from XML .config file?

Initialize an instance of AppSettingsReader class. Call the GetValue method of AppSettingsReader class, passing in the name of the property and the type expected. Assign the result to the appropriate variable. (More...)

can asp.net website runs without web.config file?

Yes, and it will take the default setting from machine.config file from the machine. so web.config file is not necessary or must for running or publishing website or web application. (More...)

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