在 VB.net 中，如何保存对 app.config 的更改
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In VB.net, how do I save changes to app.config
提问by mike
I have a couple of appSettings in my app.config file, with default values:
我的 app.config 文件中有几个 appSettings，具有默认值：
<appSettings>
<add key="Foo" value="one"/>
<add key="Bar" value="two"/>
</appSettings>
which I am able to read and put the values into a TextBox and a ComboBox
我能够读取并将值放入 TextBox 和 ComboBox
I have this code to save the changes made to those two, but the changes I make are not saved to the app.config file itself, so when I close the program and open it again, the values go back to the defaults.
我有这段代码来保存对这两个所做的更改，但我所做的更改不会保存到 app.config 文件本身，因此当我关闭程序并再次打开它时，这些值会恢复为默认值。
Private Sub ButtonSaveSettings_Click(sender As Object, e As EventArgs) Handles ButtonSaveSettings.Click
Dim settings = System.Configuration.ConfigurationManager.AppSettings
settings.Set("Foo", TextBoxFoo.Text)
settings.Set("Bar", ComboBoxBar.SelectedItem.ToString)
End Sub
What do I need to do to get the updated values to persist to the app.config file?
我需要做什么才能将更新的值保留到 app.config 文件中？
(edit: The answers on the duplicate were not for VB and didn't solve this issue.)
（编辑：副本上的答案不是针对 VB 的，也没有解决这个问题。）
采纳答案by mike
I didn't need to mess around with the ConfirgurationManager by changing my app.config file to this (using Solution Explorer -> My Project -> Settings)
我不需要通过将我的 app.config 文件更改为此（使用解决方案资源管理器 -> 我的项目 -> 设置）来处理 ConfigurationManager
<userSettings>
<MyProject.My.MySettings>
<setting name="Foo" serializeAs="String">
<value>one</value>
</setting>
<setting name="Bar" serializeAs="String">
<value>two</value>
</setting>
</MyProject.My.MySettings>
</userSettings>
I was able to use this code to save the updated values for my settings
我能够使用此代码来保存我的设置的更新值
Private Sub ButtonSaveSettings_Click(sender As Object, e As EventArgs) Handles ButtonSaveSettings.Click
My.Settings.Foo = TextBoxFoo.Text
My.Settings.Bar = ComboBoxBar.SelectedItem.ToString
End Sub
回答by Simon Sch?dler
Another method would be to use
另一种方法是使用
My.Settings.Save()
In your ButtonSaveSettings.Click Event. Otherwise, the settings would not be retentive
在您的 ButtonSaveSettings.Click 事件中。否则，设置将不会保留
