WPF 更新appsettings.json
时间: 2023-06-29 08:16:30 浏览: 221
WPF 导入JSON数据
要更新WPF应用程序中的appsettings.json文件,您可以使用Microsoft.Extensions.Configuration.Json包。以下是一个简单的示例,演示如何使用该包更新appsettings.json文件中的值:
1. 在项目中安装Microsoft.Extensions.Configuration.Json包。
2. 创建一个AppSettings类,其中包含您要更新的属性。
```csharp
public class AppSettings
{
public string Setting1 { get; set; }
public string Setting2 { get; set; }
// add more properties as needed
}
```
3. 在App.xaml.cs文件中,添加以下代码以读取appsettings.json文件并将其映射到AppSettings类中的实例:
```csharp
public partial class App : Application
{
public static AppSettings Settings { get; private set; }
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json");
var configuration = builder.Build();
Settings = configuration.GetSection("AppSettings").Get<AppSettings>();
}
}
```
4. 要更新appsettings.json文件中的值,请使用以下代码:
```csharp
App.Settings.Setting1 = "new value";
var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json");
var configuration = builder.Build();
configuration.GetSection("AppSettings").Bind(App.Settings);
using (var stream = new StreamWriter("appsettings.json"))
{
stream.Write(JsonConvert.SerializeObject(App.Settings, Formatting.Indented));
}
```
此代码将更新AppSettings类中的Setting1属性,并将其写入appsettings.json文件。请注意,此代码中的JsonConvert类需要Newtonsoft.Json包的支持。
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