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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Windows.Forms;
namespace DomenicDenicola.Extensions
{
/// <summary>
/// A set of methods that are much easier to use than the usual <see cref="Control.Invoke"/> versions, since they
/// accept the standard delegate types as arguments.
/// </summary>
/// <remarks>
/// Instead of using the version of <see cref="Control.Invoke"/> that allows you to pass parameters to your
/// delegate, just capture them in a closure when using one of these.
/// </remarks>
public static class WindowsFormsControlInvoke
{
/// <summary>
/// Executes the specified delegate on the thread that owns the control's underlying window handle.
/// </summary>
/// <param name="control">The control whose window handle the delegate should be invoked on.</param>
/// <param name="method">A delegate that contains a method to be called in the control's thread context.</param>
public static void Invoke(this Control control, Action method)
{
if (control.InvokeRequired)
{
control.Invoke(method);
}
else
{
method();
}
}
/// <summary>
/// Executes the specified delegate on the thread that owns the control's underlying window handle, returning a
/// value.
/// </summary>
/// <param name="control">The control whose window handle the delegate should be invoked on.</param>
/// <param name="method">A delegate that contains a method to be called in the control's thread context and
/// that returns a value.</param>
/// <returns>The return value from the delegate being invoked.</returns>
public static TResult Invoke<TResult>(this Control control, Func<TResult> method)
{
if (control.InvokeRequired)
{
return (TResult)control.Invoke(method);
}
else
{
return method();
}
}
}
}
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