Could not GetActiveTransaction - repository

Question

I need to call stored procedure in my App Service. I'm following this tutorial to create a custom repository. But I could not find the Context.Database.
Here is the code:
[UnitOfWork]
public virtual async Task<List<string>> GetUserNames()
{
EnsureConnectionOpen();
using (var command = CreateCommand("GetUsernames", CommandType.storedProcedure))
{
using (var dataReader = await command.ExecuteReaderAsync())
{
var result = new List<string>();
while (dataReader.Read())
{
result.Add(dataReader["UserName"].ToString());
}
return result;
}
}
}
What is the Context.Database and how do I use it?
My application is MVC in .Net4.6.1.
Update 1
I have resolved this issue by inheriting MyApplicationRepositoryBase.
Now I face a new issue when trying to GetActiveTransaction. I don't have any idea about this. What can I do?
Here is the code:
private DbTransaction GetActiveTransaction()
{
return (DbTransaction)_transactionProvider.GetActiveTransaction(new ActiveTransactionProviderArgs
{
{"ContextType", typeof(MyDbContext) },
{"MultiTenancySide", MultiTenancySide }
});
}
Here is the error log:
System.NullReferenceException: Object reference not set to an instance of an object.
at Abp.EntityFramework.EfActiveTransactionProvider.GetActiveTransaction(ActiveTransactionProviderArgs args) in D:\Github\aspnetboilerplate\src\Abp.EntityFramework\EntityFramework\EfActiveTransactionProvider.cs:line 21
Update 2
I tried to comment out the command.Transaction and it worked:
private DbCommand CreateCommand(string commandText, CommandType commandType, params SqlParameter[] parameters)
{
var command = Context.Database.GetDbConnection().CreateCommand();
command.CommandText = commandText;
command.CommandType = commandType;
// command.Transaction = GetActiveTransaction();
foreach (var parameter in parameters)
{
command.Parameters.Add(parameter);
}
return command;
}
I still need to put my code under a Transaction, so I don't want to comment out this line. What should I do?

Answer 1

Now I faced the new issue when trying to get Active Transaction
Add this in PreInitialize method of YourProjectNameDataModule:
Configuration.ReplaceService<IEfTransactionStrategy, DbContextEfTransactionStrategy>(DependencyLifeStyle.Transien‌​t);