How to get employee details using stored procedure in oracle database

Question

Help me, anyone, I am new in Oracle access in c# asp.net.

using (OracleConnection objConn = new OracleConnection(strConnection)
{
OracleCommand command = new OracleCommand();
command.Connection = objConn;
command.CommandText = "SP_GET_EMPLOYEE_DETAIL";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add("VARCALLDATE", OracleDbType.Varchar2).Value = strdate;
command.Parameters.Add("VARUCID1", OracleDbType.Varchar2).Value = CODE1;
command.Parameters.Add("VARUCID2", OracleDbType.Varchar2).Value = CODE2;
command.Parameters.Add("VARUCID3", OracleDbType.Varchar2).Value = CODE3;
command.Parameters.Add("VARUCID4", OracleDbType.Varchar2).Value = CODE4;
command.Parameters.Add("VARUCID5", OracleDbType.Varchar2).Value = CODE5;
try
{
objConn.Open();
command.ExecuteNonQuery();
adapter = new OracleDataAdapter(command);
adapter.Fill(ds);
objConn.Close();
Gridlist.DataSource = ds.Tables[0];
Gridlist.DataBind();
}
catch (Exception ex)
{
System.Console.WriteLine("Exception: {0}", ex.ToString());
}
objConn.Close();
}

ERROR:

{"ORA-06550: line 1, column 7:\nPLS-00306: wrong number or types of arguments in call to 'SP_GET_EMPLOYEE_DETAIL'\nORA-06550: line 1, column 7:\nPL/SQL: Statement ignored"}