Treeview 復制 tkinter treeview 中的值

Question

當我單擊刷新按鈕時，它會從 SQL 數據庫中查詢數據，但在列表框中它會重復這些值

def show():

    mysqldb = mysql.connector.connect(host="localhost", user="root", password="1986@", database="ecogreen")
    mycursor = mysqldb.cursor()
    mycursor.execute("SELECT id,Firstname,Lastname,Mobile,Location FROM customers1")
     records = mycursor.fetchall()

    for i, (id, Firstname, Lastname, Mobile, Location) in enumerate(records, start=2):
        listBox.insert("", "end", values=(id, Firstname, Lastname, Mobile, Location))
        mysqldb.close()

我試圖包含清除和刪除功能，但它不起作用，請有人幫助我

熱烈的問候賈納塔南

Answer 1

您需要在從數據庫中填充數據之前清除listBox ：

def show():
    mysqldb = mysql.connector.connect(host="localhost", user="root", password="1986@", database="ecogreen")
    mycursor = mysqldb.cursor()
    mycursor.execute("SELECT id,Firstname,Lastname,Mobile,Location FROM customers1")
    records = mycursor.fetchall()
    mysqldb.close()

    # clear table
    listBox.delete(*listBox.get_children())
    # populate table
    for i, (id, Firstname, Lastname, Mobile, Location) in enumerate(records, start=2):
        listBox.insert("", "end", values=(id, Firstname, Lastname, Mobile, Location))