In DevForce you can do this with an implementation of the IDataSourceKeyResolver interface.  The interface supports a single method, GetKey, which DevForce will call the first time it needs to work with the data source.  The "key" returned by the method is usually a ClientEdmKey, which is basically just strongly-typed connection information.  In your GetKey method you can build up the connection string entirely from code, or take an existing connection string from the config and modify it as needed, or as you do above, load it into a SqlConnectionStringBuilder to work with.

    EntityConnectionStringBuilder eBuilder = new EntityConnectionStringBuilder(cs.ConnectionString);
    SqlConnectionStringBuilder sBuilder = new SqlConnectionStringBuilder(eBuilder.ProviderConnectionString);
    sBuilder.Password = "bob";
    eBuilder.ProviderConnectionString = sBuilder.ConnectionString;
    return new ClientEdmKey(keyName, eBuilder.ConnectionString);

  }
}

Hi all,

Here is my configuration file. It contains the connection string used by EF4 and Devforce 2010 :

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    <add name="testEntities1" 
         connectionString=
         "metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;
         provider=System.Data.SqlClient;
         provider connection string=&quot;
          Data Source=.\MYINSTANCE;
          Initial Catalog=test;
          User ID=SPONGE;
          Password=BOB;
          MultipleActiveResultSets=True&quot;" 
         providerName="System.Data.EntityClient" />
  </connectionStrings>
</configuration>

This is clearly not a secure way to connect to the Database... 
I want to at least remove the password from the Connection String and specify it within application code.
Like this :

<configuration>
  <connectionStrings>
    <add name="testEntities1" 
         connectionString=
         "metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;
         provider=System.Data.SqlClient;
         provider connection string=&quot;
          Data Source=.\MYINSTANCE;
          Initial Catalog=test;
          User ID=SPONGE;
          Password=BOB;
          MultipleActiveResultSets=True&quot;" 
         providerName="System.Data.EntityClient" />
  </connectionStrings>
</configuration>

How can I do this ?

When I disable Devforce and use only Entity Framework 4.0, I can do that with the following piece of code :

// Instanciate Entity Manager
testEntities1 context = new testEntities1();

// Get connection string and set some parameters
SqlConnectionStringBuilder sb = new SqlConnectionStringBuilder(((EntityConnection)context.Connection).StoreConnection.ConnectionString);
sb.IntegratedSecurity = false;
sb.UserID = "SPONGE";
sb.Password = "BOB";
 
// Set new connection string to EF
((EntityConnection)context.Connection).StoreConnection.ConnectionString = sb.ConnectionString;

I need to do something like this with Devforce.

Thanks a lot for your help ;)