Dynamically change connectionString in web.config
I have the following in my web.config
<connectionStrings> <add name="ActiveDirectoryConnection" connectionString="LDAP://ActiveDirectoryDomain1.com" providerName="System.Web.Security.ActiveDirectoryMembershipProvider"/> </connectionStrings>
I need to add a dropdown box to my login page that allows the user to change the connectionString to a different string, e.g. "LDAP://ActiveDirectoryDomain2.com"
In C# code behind how do change the connectionString value?
The problem I am having is that there are 4 other web.config settings call that one connectionString. For example:
<activeDirectorySecurityContextSettings connectionStringName="ActiveDirectoryConnection" defaultADUserName="ReportUser" defaultADPassword="password"/>
If a user is able to change the value of the Setting, then the web.config file is the wrong place to store the setting.
You should check out a User Scoped value in a Settings file instead.
When using settings like this, changing the value at runtime is easy:
Properties.Settings.Default.LdapConnectionString = "New Connection String"; Properties.Settings.Default.Save();
- It's a bad idea to modify a *.config file from inside the program.
- It's a bad idea for a webpage to modify any file in the root folder of your website.
- It's a bad idea to have permission set allowing a web page the modification of files in the root folder of your website.
Basically, you need to forget about the web.config, and structure your code to use a connection string the exist only in memory.
var settings = ConfigurationManager.ConnectionStrings[ 0 ]; var fi = typeof( ConfigurationElement ).GetField( "_bReadOnly", BindingFlags.Instance | BindingFlags.NonPublic ); fi.SetValue(settings, false); settings.ConnectionString = "Data Source=Something";
Even if it's a bad idea to modify the web.config file from inside an app, you can try this: