Error: wrong number or types of arguments

Question

"

ORA-06550: line 1, column 7:

PLS-00306: wrong number or types of arguments in call to 'VIEW_EMPLOYEE_DETAILS'

"

 

this is asp.net 

 

public void DisplayRecord()

{

OracleConnection connR = new OracleConnection(ConfigurationManager.ConnectionStrings["ssat"].ToString());

OracleCommand cmd1 = new OracleCommand("view_employee_details", connR);

connR.Open();

try

{

cmd1.CommandType = System.Data.CommandType.StoredProcedure;

cmd1.Parameters.Add(new OracleParameter("i_employeeid", OracleType.Number)).Value = Convert.ToInt32(EmployeeIdText.Text.ToString());

cmd1.Parameters.Add(new OracleParameter("o_cursor", OracleType.Cursor)).Direction = ParameterDirection.Output;

OracleDataAdapter da = new OracleDataAdapter(cmd1);

da.SelectCommand = cmd1;

DataSet ds = new DataSet();

da.Fill(ds);

EmployeeDetailsGrid.DataSource = ds.Tables[0]; ;

EmployeeDetailsGrid.DataBind();

EmployeeDetailsGrid.Visible = true;

}

catch (Exception e)

{

errorlbl.Visible = true;

}

}

my procedure 

PROCEDURE view_employee_details(

i_employee_id IN number,

o_cursor OUT sys_refcursor)

is

begin

open o_cursor

for

select * from employee_details e

where e.employee_id=i_employee_id;

end;