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ControlExtensions.cs
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47 lines (43 loc) · 1.65 KB
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// Copyright © 2019 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
using System;
using System.Windows.Forms;
namespace CefSharp.WinForms.Example
{
public static class ControlExtensions
{
/// <summary>
/// Executes the Action asynchronously on the UI thread, does not block execution on the calling thread.
/// No action will be performed if the control doesn't have a valid handle or the control is Disposed/Disposing.
/// </summary>
/// <param name="control">the control for which the update is required</param>
/// <param name="action">action to be performed on the control</param>
public static void InvokeOnUiThreadIfRequired(this Control control, Action action)
{
//See https://stackoverflow.com/questions/1874728/avoid-calling-invoke-when-the-control-is-disposed
//for background and some guidance when implementing your own version.
//No action
if (control.Disposing || control.IsDisposed || !control.IsHandleCreated)
{
return;
}
if (control.InvokeRequired)
{
control.BeginInvoke((Action)(() =>
{
//No action
if (control.Disposing || control.IsDisposed || !control.IsHandleCreated)
{
return;
}
action();
}));
}
else
{
action.Invoke();
}
}
}
}