解决此问题的一种方法是在Blazor应用程序的启动时注入Blazored LocalStorage服务。这可以通过在index.html文件中的JavaScript部分中添加以下代码来实现:
window.localStorage = window.localStorage || {};
window.BlazoredLocalStore = {
setItem: function (key, data) {
window.localStorage[key] = JSON.stringify(data);
},
getItem: function (key) {
return JSON.parse(window.localStorage[key]);
}
};
然后,在Startup.cs文件中的ConfigureServices方法中使用依赖注入将Blazored LocalStorage服务注册为Scoped服务:
services.AddScoped();
最后,在你的组件中注入ILocalStorageService并直接使用它。
示例代码:
@using Blazored.LocalStorage
@inject ILocalStorageService localStorage
@if (CurrentCount != null)
{
Current count: @CurrentCount
}
@code {
private int? CurrentCount;
private async Task IncrementCount()
{
CurrentCount = await localStorage.GetItemAsync("count") ?? 0;
CurrentCount++;
await localStorage.SetItemAsync("count", CurrentCount);
}
}