无法使用EntityCommandExecutionException查找数据库名称

Question

In one of my WPF application, I am handling my exceptions at global level. I used below code to handle the exception.

 private void App_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
    {
        if (e.Exception is System.Data.Entity.Core.EntityCommandExecutionException)
        {
            var entityException = e.Exception as System.Data.Entity.Core.EntityCommandExecutionException;
            if (entityException.HResult == -2146232004) // Schema is different than expected
            {
                MessageBox.Show("Database exists but schema is different");
                e.Handled = true;
            }
        }
    }

It is working as expected. But I am using multiple DbContext having different connection strings and I want to display the name of database in the error. I cannot find Connection string in EntityCommandExecutionException. How to get database name?

Answer 1

假设您在错误处理程序中的某个位置可以访问发生错误的DbContext对象，则可以使用dbContextObject.Database.Connection属性访问SqlConnection对象，该对象提供有关数据库连接的各种属性，包括名称数据库。