How to dynamic modify the DbContext's ConnectionString in AppService?

• Abp package version:4.10.1.
• base framework: .Net Core.

I need to connect to multiple external databases of ERP in Abp Modular. My method is dynamic modify the DbContext’s ConnectionString in AbpController of Web Project. The code is as follows:

var connectionStringBuilder = new DbConnectionStringBuilder();
...
var db = _dbContextResolver.Resolve<MyDbContext>(connectionStringBuilder.ConnectionString, null);
(Data processing code...)

But I think the best way should be in the Application Project’s AppService. My question is: How to realize the above code functions in the AppService?

[XbCore]

I found the solution, same as the control. In the AppService inject IDbContextResolver, by IDbContextResolver resolver the DbContext and change it’s ConnectionString. Thanks everyone…

[ismcagdas]

You can implement your own connection string resolver similar to https://github.com/aspnetboilerplate/aspnetboilerplate/blob/dev/src/Abp.Zero.EntityFramework/Zero/EntityFramework/DbPerTenantConnectionStringResolver.cs