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在我正在创建的收银机程序中,我希望在刷卡后自动提交表单。这是怎么做到的?所有信用卡的磁条中存储的字符数量是否相同?
假设您刷了信用卡并获得了信用卡密码的最大长度。并且在TextBox TextChanged Event
TextBox
TextChanged Event
if (textBox.Length == pinNumberLength) { submitButton.PerformClick()//or logic here }