我正在尝试创建一个扩展名(.vsix),在其中我需要访问状态栏并显示自定义文本。我正在关注"Extend the status bar"正式Microsoft文档。我输入代码的方式是:
private Command1(AsyncPackage package, OleMenuCommandService commandService)
{
this.package = package ?? throw new ArgumentNullException(nameof(package));
commandService = commandService ?? throw new ArgumentNullException(nameof(commandService));
var menuCommandID = new CommandID(CommandSet, CommandId);
var menuItem = new MenuCommand(this.MenuItemCallback, menuCommandID);//calling spot
commandService.AddCommand(menuItem);
}
private void MenuItemCallback(object sender, EventArgs e)
{
//Error Line
IVsStatusbar statusBar = (IVsStatusbar)ServiceProvider.GetService(typeof(SVsStatusbar));
//Error Line
// Make sure the status bar is not frozen
int frozen;
statusBar.IsFrozen(out frozen);
if (frozen != 0)
{
statusBar.FreezeOutput(0);
}
// Set the status bar text and make its display static.
statusBar.SetText("We just wrote to the status bar.");
// Freeze the status bar.
statusBar.FreezeOutput(1);
// Get the status bar text.
string text;
statusBar.GetText(out text);
System.Windows.Forms.MessageBox.Show(text);
// Clear the status bar text.
statusBar.FreezeOutput(0);
statusBar.Clear();
}
运行此代码时,它在GetService(typeof(SVsStatusbar))
此部分显示错误。
错误是:
无法从方法中推断方法'ServiceExtensions.GetService(IServiceProvider,bool)'的类型参数用法。尝试明确指定类型参数
我是用错误的方式这样做吗?我是C#的初学者。请考虑一下。谢谢!
您需要一个服务提供者实例:
System.IServiceProvider serviceProvider = package as System.IServiceProvider;
statusBar = (IVsStatusbar)serviceProvider.GetService(typeof(SVsStatusbar));