如何在Tkinter TreeView中输出sqlite3数据

Question

Am having issue with how output all records in my sqlite3 db into tkinter treeview .It outputs only the last record in the db and also the records doesn't appear at the column specified for it.The print method print all the db records to my terminal but doesn't output all the records to the treeview widget.

Your suggestions are welcome to achieve this

from tkinter import ttk
import tkinter as tk
import sqlite3


def connect():
    conn = sqlite3.connect("TRIAL.db")
    cur = conn.cursor()
    cur.execute("CREATE TABLE IF NOT EXISTS profile(id INTEGER PRIMARY KEY, 
First TEXT, Surname TEXT)")
    conn.commit()
    conn.close()


def View():
    conn = sqlite3.connect("TRIAL.db")
    cur = conn.cursor()
    cur.execute("SELECT * FROM profile")
    rows = cur.fetchall()
    for row in rows:
        print(row) # it print all records in the database
    tree.insert("", tk.END, values=row)
    conn.close()


connect()  #  this to create the db

root = tk.Tk()
root.geometry("400x400")

tree= ttk.Treeview(root, column=("column", "colunn1"))
tree.heading("#0", text="NUMBER")
tree.heading("#1", text="FIRST NAME")
tree.heading("#2", text="SURNAME")
tree.pack()

b2 = tk.Button(text="view data", command=View)
b2.pack()

root.mainloop()

Answer 1

There are two issues in your code:

• The first is that tree.insert("", tk.END, values=row) is not inside the for loop, so only the last row will be inserted in the treeview.

• The second is that the column #0 is a special column, and its value is set with text=... , not with values=(...) . To display correctly your data, you have at least two alternatives:

  • The first is to replace tree.insert("", tk.END, values=row) by tree.insert("", tk.END, text=row[0], values=row[1:])

  • The second is not to use the special column #0 , you don't need it because you are using the treeview as a table. When you create the tree, use the option show='headings' to hide column #0 and create 3 columns:

     from tkinter import ttk import tkinter as tk import sqlite3 def connect(): conn = sqlite3.connect("TRIAL.db") cur = conn.cursor() cur.execute("CREATE TABLE IF NOT EXISTS profile(id INTEGER PRIMARY KEY, First TEXT, Surname TEXT)") conn.commit() conn.close() def View(): conn = sqlite3.connect("TRIAL.db") cur = conn.cursor() cur.execute("SELECT * FROM profile") rows = cur.fetchall() for row in rows: print(row) # it print all records in the database tree.insert("", tk.END, values=row) conn.close() connect() # this to create the db root = tk.Tk() root.geometry("400x400") tree= ttk.Treeview(root, column=("column1", "column2", "column3"), show='headings') tree.heading("#1", text="NUMBER") tree.heading("#2", text="FIRST NAME") tree.heading("#3", text="SURNAME") tree.pack() b2 = tk.Button(text="view data", command=View) b2.pack() root.mainloop()