Connection string in config file vb net

Once you find it simply select and click OK. Once the reference is added, it will be shown in the References folder of the Solution Explorer. You will need to import the following namespace. Imports System. Reading ConnectionString from Web. Once the reference is added, you can read the Connection String value from the Web.

ConnectionStrings[ "ConString" ]. ConnectionStrings "ConString". Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. Our Support Team is here to help. Ask Question. Net VB. Config Console Applications.

Config file. Config file is defined as follows and it consists of the following properties. Initial Catalog - The name of the Database. Integrated Security - By default False. If set true it signifies that Windows Authentication needs to be used. Initial Catalog — The name of the Database. Config file in code behind, the very first thing you need to do is to add reference of the System. A lot of things don't make sense in your code or are plain wrong.

You are working with NET so you should use the Framework classes and methods not the old Visual Basic function maintained just for compatibility. After all this effort perhaps you should consider that NET has a proven infrastructure to deal with connectionstrings and with configuration files. You should really stop using this approach and learn how to use a configuration file and how to handle a connection string from a config file.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 5 years ago. Active 5 years ago. Viewed 2k times. Embedding connection strings in your application's code can lead to security vulnerabilities and maintenance problems. Unencrypted connection strings compiled into an application's source code can be viewed using the Ildasm.

Moreover, if the connection string ever changes, your application must be recompiled. For these reasons, we recommend storing connection strings in an application configuration file.

Application configuration files contain settings that are specific to a particular application. For example, an ASP. NET application can have one or more web. Configuration files share common elements, although the name and location of a configuration file vary depending on the application's host. Child elements include add , clear , and remove. The following configuration file fragment demonstrates the schema and syntax for storing a connection string. The name attribute is a name that you provide to uniquely identify a connection string so that it can be retrieved at run time.

The providerName is the invariant name of the. NET Framework data provider, which is registered in the machine. You can save part of a connection string in a configuration file and use the DbConnectionStringBuilder class to complete it at run time. This is useful in scenarios where you do not know elements of the connection string ahead of time, or when you do not want to save sensitive information in a configuration file.

For more information, see Connection String Builders. External configuration files are separate files that contain a fragment of a configuration file consisting of a single section. The external configuration file is then referenced by the main configuration file. Storing the connectionStrings section in a physically separate file is useful in situations where connection strings may be edited after the application is deployed.

For example, the standard ASP. NET behavior is to restart an application domain when configuration files are modified, which results in state information being lost. However, modifying an external configuration file does not cause an application restart. External configuration files are not limited to ASP. NET; they can also be used by Windows applications.

In addition, file access security and permissions can be used to restrict access to external configuration files. Working with external configuration files at run time is transparent, and requires no special coding. To store connection strings in an external configuration file, create a separate file that contains only the connectionStrings section.

Do not include any additional elements, sections, or attributes. This example shows the syntax for an external configuration file. In the main application configuration file, you use the configSource attribute to specify the fully qualified name and location of the external file.