打开文件对话框后，无法写入tkinter spinbox

import tkinter as tk

root = tk.Tk()

# 创建一个StringVar来绑定Spinbox
var = tk.StringVar()

# 创建Spinbox，并将其与StringVar绑定
spinbox = tk.Spinbox(root, textvariable=var)
spinbox.pack()

# 打开文件对话框后将选择的文件路径写入Spinbox
def open_file_dialog():
    file_path = tk.filedialog.askopenfilename()
    var.set(file_path)

# 创建一个按钮用于打开文件对话框
button = tk.Button(root, text="打开文件对话框", command=open_file_dialog)
button.pack()

root.mainloop()

import tkinter as tk
from tkinter import filedialog

root = tk.Tk()

# 创建Spinbox
spinbox = tk.Spinbox(root)
spinbox.pack()

# 打开文件对话框后将选择的文件路径写入Spinbox
def open_file_dialog(event):
    file_path = filedialog.askopenfilename()
    spinbox.delete(0, "end")  # 清空Spinbox原有内容
    spinbox.insert(0, file_path)

# 创建一个按钮用于打开文件对话框
button = tk.Button(root, text="打开文件对话框")
button.bind("<Button-1>", open_file_dialog)
button.pack()

root.mainloop()