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POIssues on dynamically change and switching the connectionString in web Config
 

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    <p>I am trying to switch different databases for a web application at Run time.</p> <p><strong>Senario</strong> We have one asp.net web application and different databases for different customers.I am trying to switch particular connection string value from a common database where i am keeping a mapping table for connection string ,particular customer id and password .After the successful lo gin i am piking a connection string from the common database and edit the web.config file connection string section by replacing selected connection string at run time. i am doing this by add following code to login event</p> <pre><code> conectionString = cString; Configuration openWebConfiguration = WebConfigurationManager.OpenWebConfiguration("~"); ConnectionStringsSection sections = openWebConfiguration.GetSection("connectionStrings") as ConnectionStringsSection; if (sections != null) { sections.ConnectionStrings["ConnectionStringName"].ConnectionString = conectionString; ConfigurationManager.RefreshSection("ConnectionStringName"); openWebConfiguration.Save(); } </code></pre> <p>i am reading above connection string on a page by using <code>ConfigurationManager</code>.problem is the web config file is changing but after calling to another page using <code>Response.Redirect</code> will throw an exception .Exception is "<strong>Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack</strong> "I can realized this is something happen on cross threaded environment.My questions are </p> <ul> <li>What is exact reason for above exception? </li> <li>which page life circle of the Asp.net reads the setting from the web config file ?</li> <li>What is the proper way i can implement above scenario?</li> </ul>
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    1. CODon't keep changing the web.config file as it's going to keep triggering recompiles and tearing app domains around. I don't know why you have it layed out as you do, but if you have to just, open a connection with the return value from the common DB.
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    2. CO@RubbleFord -Ya you are correct.Can you tell me what is the good way to implement above scenario?
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