Winform跨线程操作界面的策略

BeginInvoke(new ThreadStart(() => toolStripButton1.Text = "aaa"));

1、非跨线程操作和部分跨线程get不会引发异常；

2、跨线程set，见上面的例子。

3、部分跨线程get，见下面的例子。

var a = (int)EndInvoke(BeginInvoke(new Func<int>(() => toolStripComboBox1.SelectedIndex)));

 

public static class UIInvokeHelper

{

    public static void InvokeUI(this Form form, Action action)

    {

        if (form == null)

        {

            throw new ArgumentNullException("form");

        }

        if (action == null)

        {

            throw new ArgumentNullException("action");

        }

        if (form.InvokeRequired)

        {

            form.Invoke(new Action(action), null);

        }

        else

        {

            action();

        }

    }

    public static T InvokeUI<T>(this Form form, Func<T> func)

    {

        if (form == null)

        {

            throw new ArgumentNullException("form");

        }

        if (func == null)

        {

            throw new ArgumentNullException("func");

        }

        if (form.InvokeRequired)

        {

            return (T)form.Invoke(new Func<T>(func));

        }

        return func();

    }

}

 

public static class UIInvokeHelper

{

    /// <summary>

    /// 适用于非耗时、无返回值的跨线程界面操作。

    /// </summary>

    /// <param name="form"></param>

    /// <param name="action"></param>

    public static void InvokeUI(this Form form, Action action)

    {

        if (form == null)

        {

            throw new ArgumentNullException("form");

        }

        if (action == null)

        {

            throw new ArgumentNullException("action");

        }

        if (form.InvokeRequired)

        {

            form.Invoke(new Action(action));

        }

        else

        {

            action();

        }

    }

    /// <summary>

    /// 适用于有返回值的跨线程界面操作。

    /// </summary>

    /// <typeparam name="T"></typeparam>

    /// <param name="form"></param>

    /// <param name="func"></param>

    /// <returns></returns>

    public static T InvokeUI<T>(this Form form, Func<T> func)

    {

        if (form == null)

        {

            throw new ArgumentNullException("form");

        }

        if (func == null)

        {

            throw new ArgumentNullException("func");

        }

        if (form.InvokeRequired)

        {

            return (T)form.Invoke(new Func<T>(func));

        }

        return func();

    }

    /// <summary>

    /// 适用于耗时、无返回值的跨线程界面操作。

    /// </summary>

    /// <param name="form"></param>

    /// <param name="action"></param>

    public static void BeginInvokeUI(this Form form, Action action)

    {

        if (form == null)

        {

            throw new ArgumentNullException("form");

        }

        if (action == null)

        {

            throw new ArgumentNullException("action");

        }

        if (form.InvokeRequired)

        {

            form.BeginInvoke(new Action(action));

        }

        else

        {

            Task.Factory.StartNew(action);

        }

    }

}