如何在tkinter中编辑信息

Question

我正在尝试编写代码来获取名称，工资和年龄，并将其显示在列表中。我希望此代码具有删除和编辑信息的功能。但是在这一步中，我不知道如何删除或编辑特定信息。

from tkinter import *
from tkinter import messagebox
from tkinter.ttk import *

i = 2
table_row = []
def getting():
        global i
        i = i + 1
        data = []
        var = IntVar()
        c = Checkbutton(window, variable=var)
        c.val = var
        data.append(c)
        c.grid(row=i, column=0)

        value1=e11.get()
        data.append(value1)
        value2 = e22.get()
        data.append(value2)
        value3 = e33.get()
        data.append(value3)

        lblq = Label(window, text=data[1:])
        lblq.grid(row=i, column=1)
        table_row.append(data)
        # print(table_row)

def delete_row():
    for Noo, row in reversed(list(enumerate(table_row))):
        if row[0].val.get() == 1:
            for i in row:
                i.destroy()
            table_row(Noo)

window = Tk()
window.title("Table with add, edit and delete")
window.geometry('600x600')

def Closing():
    res = messagebox.askokcancel("warning", "Are You sure!!!!!")
    if res == True:
        sys.exit()

    ############################################### #menu inside winodow
menu = Menu(window)

new_item = Menu(menu)

new_item.add_command(label="Exit", command=Closing)

menu.add_cascade(label='File', menu=new_item)

window.config(menu=menu)
###############################################
lblname =Label(window, text="Name")
lblname.place(x = 440,y = 130)
e11 = Entry(window, width=20)
e11.place(x = 440,y = 150)

lblsurname =Label(window, text="Salary")
lblsurname.place(x = 440,y = 180)
e22 = Entry(window, width=20)
e22.place(x = 440,y = 200)

lblage =Label(window, text="Age")
lblage.place(x = 440,y = 240)
e33 = Entry(window, width=20)
e33.place(x = 440,y = 260)

dl = Button(window, text='Delete',command=delete_row)
dl.place(x = 440,y = 10)

dl = Button(window, text='Edit')
dl.place(x = 440,y = 50)

B2 = Button(window, text="+ add emplyoee", command=getting)
B2.place(x = 440,y = 90)

v0 = StringVar()
e0 = Entry(window, textvariable=v0, state='readonly')
v0.set('Select')
e0.grid(row=1, column=0)

v1 = StringVar()
e1 = Entry(window, textvariable=v1, state='readonly')
v1.set('Information')
e1.grid(row=1, column=1)

window.mainloop()

也许我应该在我的代码中使用Class，但我很难同时使用Class和tkinter

Answer 1

您可以使用字典来保持单行 - 它更具可读性

当我添加行时，我使用来自Entry的小部件和文本创建字典，我添加到行列表并清除条目。

如果表中有选定的行，那么我不会创建新行，而是替换所选行中的文本。

我搜索选定行以将文本从行复制到Entry的方式相同。

我搜索选定行以删除行的方式相同 - 销毁小部件并删除列表中的行。

这样做更容易，因为我使用字典来保持行，它更具可读性。

from tkinter import *
from tkinter import messagebox
from tkinter.ttk import *

# --- functions ---

def closing():
    res = messagebox.askokcancel("warning", "Are You sure!!!!!")
    if res == True:
        sys.exit()

def add_row():
    global row_number

    # check if there is selected row to update    
    update = None
    for row in table_row:
        if row['var'].get() == 1:
           update = row
           break # dont search next selected row

    if update:
        row['data'] = [e11.get(), e22.get(), e33.get()]
        row['label']['text'] = row['data']
    else:
        row_number += 1

        row = dict()

        row['row_number'] = row_number

        row['var'] = IntVar()

        row['checkbutton'] = Checkbutton(window, variable=row['var'])
        row['checkbutton'].grid(row=row_number, column=0)

        row['data'] = [e11.get(), e22.get(), e33.get()]

        row['label'] = Label(window, text=row['data'])
        row['label'].grid(row=row_number, column=1)

        table_row.append(row)

    # clear entry 
    e11.delete('0', 'end')
    e22.delete('0', 'end')
    e33.delete('0', 'end')
    lblnumber["text"] = "Row number: -"

def delete_row():
    for row in reversed(table_row):
        if row['var'].get() == 1:
            # remove widgets
            row['checkbutton'].destroy()
            row['label'].destroy()
            # remove row from list
            del row

def edit_row():
    for row in table_row:
        if row['var'].get() == 1:
            # remove all text
            e11.delete('0', 'end')
            e22.delete('0', 'end')
            e33.delete('0', 'end')
            # put text from row
            e11.insert('end', row['data'][0])
            e22.insert('end', row['data'][1])
            e33.insert('end', row['data'][2])
            lblnumber["text"] = "Row number: {}".format(row['row_number'])
            break # dont search next selected row

# --- main ---

row_number = 2
table_row = []

window = Tk()
window.title("Table with add, edit and delete")
window.geometry('600x600')

menu = Menu(window)
new_item = Menu(menu)
new_item.add_command(label="Exit", command=closing)
menu.add_cascade(label='File', menu=new_item)
window.config(menu=menu)

lblnumber = Label(window, text="Row Number: -")
lblnumber.place(x=440, y=330)

e00 = Label(window, width=20)
e00.place(x=440, y=150)

lblname = Label(window, text="Name")
lblname.place(x=440, y=130)

e11 = Entry(window, width=20)
e11.place(x=440, y=150)

lblsurname = Label(window, text="Salary")
lblsurname.place(x=440, y=180)

e22 = Entry(window, width=20)
e22.place(x=440, y=200)

lblage = Label(window, text="Age")
lblage.place(x=440, y=240)

e33 = Entry(window, width=20)
e33.place(x=440, y=260)

dl = Button(window, text='Delete', command=delete_row)
dl.place(x=440, y=10)

dl = Button(window, text='Edit', command=edit_row)
dl.place(x=440, y=50)

B2 = Button(window, text="+ add emplyoee", command=add_row)
B2.place(x=440, y=90)

v0 = StringVar()
e0 = Entry(window, textvariable=v0, state='readonly')
v0.set('Select')
e0.grid(row=1, column=0)

v1 = StringVar()
e1 = Entry(window, textvariable=v1, state='readonly')
v1.set('Information')
e1.grid(row=1, column=1)

window.mainloop()