编写文件配置时出现问题

问题描述

在我的VB.net程序中，不是C或C＃我读了我的Config文件，例如：

In my program in VB.net, NOT C or C # I read my Config file for example like this:

Imports System.Configuration
Imports System.Collections.Specialized
Imports System.Collections.Generic

Module Module1

    Sub LeggiConfig()

        Dim sAttr As String

        sAttr = ConfigurationSettings.AppSettings("Key1") ' li legge ad uno ad uno
        Console.WriteLine("The value of Key1: " & sAttr)

        end sub
   End Module

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
    </startup>

  <appSettings>

    <add key="Key0" value="0" />
    <add key="Key1" value="1" />
    <add key="Key2" value="2" />
  </appSettings>

</configuration>

我想更改Key1参数，我尝试了以下方法：

I would like to change that Key1 parameter and I tried these ways:

ConfigurationSettings.AppSettings.Set(("Key1"), "pippo" & " ")
My.Settings.Save()
 sAttr = ConfigurationSettings.AppSettings("Key1") ' li legge ad uno ad uno
       Console.WriteLine("The value of Key1: " & sAttr)

如果我在控制台中这样写，我看到值pippo，但在配置文件中它仍然是初始值1



如果相反我添加这一行：

if I write so in the console I see the value pippo, but in the config file it still remains the initial value that was 1

if instead I add this line:

' ConfigurationSettings.AppSettings.Add(("Key1"), "pippo" & " ")

我有这个错误：



System.Configuration.ConfigurationErrorsException：'只读配置。'



这是如何解决的？



我尝试过的事情：



你能帮忙吗？我？



因为我试过我在上面写的

I have this error:

System.Configuration.ConfigurationErrorsException: 'Read-only configuration.'

how does this resolve?

What I have tried:

can you help Me ?

as I tried I wrote it above

推荐答案

Configuration configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
KeyValueConfigurationCollection settings = configFile.AppSettings.Settings;

if (settings["Key1"] == null)
{
    settings.Add("Key1", "pippo");
}
else
{
    settings["Key1"].Value = "pippo";
}

configFile.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection(configFile.AppSettings.SectionInformation.Name);

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