Overload method problem

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SQL-Server

SQL-Server-2008

, +

Data Access Layer Coding as below

public DataSet SessionDataset(string FN,string PWD,string EMAIL)
{
con.Open();
cmd = new SqlCommand("SP_SessionByDataset", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@fname",FN);
cmd.Parameters.AddWithValue("@pwd",PWD);
cmd.Parameters.AddWithValue("@Email",EMAIL);
da = new SqlDataAdapter(cmd);
ds = new DataSet();
da.Fill(ds);
con.Close();
return ds;

}



Business Logic Layer coding as below


public DataSet SessionDataset(string FN, string PWD, string EMAIL)
{
DataSet ds = d.SessionDataset();
return ds;
}


I am getting error like this

"No overload for method SessionDataset takes 0 arguments"


How to clear this error ....

Thanks in advance...