Added dropdown menu for dsn

pyDbSearch.py

@@ -14,7 +14,8 @@ datatype_mappings = {
     "Monetary": ['money', 'smallmoney']
 }
 
-
+def get_available_dsns():
+    return list(pyodbc.dataSources().keys())
 def connect_and_search(dsn_entry, uid_entry, password_entry, search_entry):
     global continue_search, condition
     DSN = dsn_entry.get()
@@ -255,6 +256,7 @@ root.title('Search Interface')
 
 # Variables for entry widgets
 dsn_var = tk.StringVar()
+available_dsns = get_available_dsns()
 uid_var = tk.StringVar()
 password_var = tk.StringVar()
 search_string_var = tk.StringVar()
@@ -280,7 +282,7 @@ def update_button_states(*args):
 
 # Labels and Entry widgets for DSN, UID, and password
 ttk.Label(root, text="DSN:").grid(row=0, column=0, padx=20, pady=10, sticky='e')
-dsn_entry = ttk.Entry(root, textvariable=dsn_var)
+dsn_entry = ttk.Combobox(root, textvariable=dsn_var, values=available_dsns, state="readonly")
 dsn_entry.grid(row=0, column=1, padx=20, pady=10, sticky='ew')
 
 ttk.Label(root, text="UID:").grid(row=1, column=0, padx=20, pady=10, sticky='e')