Passing array to Oracle procedure from c#

Question

I'm trying to pass an array to oracle procedure. I searched about it and firstly i created a type named 'dizi' (like here enter link description here). So it works in oracle developer. The problem is; i can't pass my c# array to procedure as a parameter. So how can i pass my array to my procedure?

Here is my code (When i execute, oracle error says: Not all variables bound)

public void InsertQuestion(List<string> area_list)
{
    quest_areas = area_list.ToArray();
    command.Connection = connect;
    connect.Open();

    var arry = command.Parameters.Add("Areas", OracleDbType.Varchar2);
    arry.Direction = ParameterDirection.Input;
    arry.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
    arry.Value = quest_areas;


    command.CommandText ="TESTPROCEDURE(:Areas)";
    command.CommandType = CommandType.StoredProcedure;
    command.ExecuteNonQuery();
    connect.Close();
}

Answer 1

1. Define an array type and a procedure:

   CREATE or replace PACKAGE Testpackage AS 
     TYPE Areas_t is table of VARCHAR(100) index by BINARY_INTEGER;
     PROCEDURE TESTPROCEDURE(Areas IN Areas_t);       
   END Testpackage; 
   

2. C# routine:

   public void InsertQuestion(IEnumerable<string> area_list)
   {
       var connect = new OracleConnection("YOUR CONNECTION STRING");
   
       var command = new OracleCommand("BEGIN Testpackage.Testprocedure(:Areas); END;", connect);
   
       connect.Open();
   
       var arry = command.Parameters.Add("Areas", OracleDbType.Varchar2);
   
       arry.Direction = ParameterDirection.Input;
       arry.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
       arry.Value = area_list.ToArray();
       arry.Size = area_list.Count();
       arry.ArrayBindSize = area_list.Select(_ => _.Length).ToArray();
       arry.ArrayBindStatus = Enumerable.Repeat(OracleParameterStatus.Success, area_list.Count()).ToArray();
   
       command.ExecuteNonQuery();
   
       connect.Close();
   }