"not all code paths return a value"[Resolved]

[Pirate]

What's wrong here ? It shows zigzag line under "PopulateMainCat" and the error msg says : "not all code paths return a value"

public object PopulateMainCat(string MainTableCat)
{
OpenDB();
DataSet ds =new DataSet();
string sqlstr ="SELECT * FROM " + MainTableCat + "";    
OleDbDataAdapter adp =new OleDb.OleDbDataAdapter(sqlstr,MyConnection);
 
adp.Fill(ds,MainTableCat);
foreach(DataRow dr in ds.Tables[MainTableCat].Rows)
{
return dr[1];
}
DBSpace.CloseDB.CloseDB1();
}