“不支持方法"尝试调用委托时出错

quot;Method is not supportedquot; error when trying to invoke a delegate(“不支持方法尝试调用委托时出错)

问题描述

我有一个函数 Run(string, string[]) 我想在单独的线程上运行，所以我使用委托和 BeginInvoke:

I have a function Run(string, string[]) which I want to run on a separate thread, so I am using a delegate and BeginInvoke:

private Func<string, string[], Stack<StackItem>> runner;

public MainPage()
{
    runner = Run;
}

private void btnStep_Click(object sender, RoutedEventArgs e)
{
    // snip
    runner.BeginInvoke(tbCode.Text, GetArgs(), null, null); // Exception here
    // snip
}

private Stack<StackItem> Run(string program, string[] args)
{
    return interpreter.InterpretArgs(parser.Parse(lexer.Analyse(program)), args);
}

但是，我收到 NotSupportedException was unhandled by user code 并显示 BeginInvoke() 方法的 Specified method is not supported 消息代表的.怎么了?

However, I get a NotSupportedException was unhandled by user code with a message of Specified method is not supported for the BeginInvoke() method of the delegate. What's going wrong?

我正在使用 Silverlight 4.0 和 VS2010.

I am using Silverlight 4.0 and VS2010.

推荐答案

异步 ​​Delegate.BeginInvoke 不适用于 Silverlight 中的委托.

The asynchronous Delegate.BeginInvoke is not available for delegates in Silverlight.

您应该改用 BackgroundWorker异步运行任何东西.

You should use a BackgroundWorker instead to run anything asynchronously.

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