如果我必须实现保存和编辑按钮，我该怎么办？ [英] What should I do if I have to implement a save and edit button?

问题描述

你好，



我正在创建一个表单，我有一些TextBoxes。我想将数据保存到文本文件（我已经这样做了）。当我点击保存按钮时，它会将数据保存到文件中，然后将按钮文本更改为编辑（我已完成此操作）。



现在，点击保存按钮后，我希望禁用TextBoxes，当我点击编辑按钮时，它将重新启用。如果TextBox中的数据被更改，那么它将要求确认保存，否则它将显示没有进行任何更改并覆盖现有文件。



请帮助。



我尝试了什么：



我已经拿了两个保存按钮，两个编辑按钮和值的变化我采取了两个TextBox并比较它们。但我觉得这不对。我不想要两个控件。

Hello,

I am creating a form and I have a few TextBoxes. I want to save the data to a text file (I have already done that). When I click on the "Save" button, it will save the data to a file and then change the button text to "Edit" (I have done this).

Now, after clicking on the save button, I want the TextBoxes to be disabled and when I click on the edit button, it will re-enable. If the data in the TextBoxes is changed then it will ask for confirmation for saving, else it will show no changes made and overwrite the existing file.

Please help.

What I have tried:

I have taken two save buttons, two edit buttons and for the value change I have taken two TextBoxes and comparing them. But I feel that this is not right. I don't want two of each controls.

推荐答案

这是Windows Forms，你可以使用Control.Enabled Property（System.Windows.Forms） [ ^ ]启用或禁用控件。





编辑后的数据是什么。在程序中添加一个新的布尔变量，例如

Taken this is Windows Forms, you can use Control.Enabled Property (System.Windows.Forms)[^] to enable or disable the control.


What comes to the edited data. Add a new boolean variable to your program, for example

bool changesSaved;

保存更改后，将其设置为 true 。还连接 Control.TextChanged事件（系统。 Windows.Forms） [ ^ ]并在该事件中将 changesSaved 设置为 false 。现在需要时，您可以调查ig更改是否已更改。只需记住正确设置初始值，例如，如果您从文件中读取数据。

Once you save the changes, set it to true. Also wire Control.TextChanged Event (System.Windows.Forms)[^] and in that event set the changesSaved to false. Now when needed you can investigate ig the changes have been changed or not. Just remember to set the initial value correctly for example if you read the data from a file.

这篇关于如果我必须实现保存和编辑按钮，我该怎么办？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！