如何在Windows窗体(c#)上显示动画GIF

这不太难。

1. 在你的表格上放一个图片盒。
3. 加载时显示picturebox。

• 禁用picturebox将阻止gif设置动画。

动画GIF:

如果您正在寻找动画GIF,您可以生成它们:

AjaxLoad - Ajax Loading gif generator

另一种方法是:

code project

我也有同样的问题。整个表单(包括gif)由于在后台长时间运行而停止重新绘制自身。下面是我如何解决这个问题的。

  private void MyThreadRoutine()
  {
   this.Invoke(this.ShowProgressGifDelegate);
   //your long running process
   System.Threading.Thread.Sleep(5000);
   this.Invoke(this.HideProgressGifDelegate);
  }

  private void button1_Click(object sender, EventArgs e)
  {
   ThreadStart myThreadStart = new ThreadStart(MyThreadRoutine);
   Thread myThread = new Thread(myThreadStart);
   myThread.Start(); 
  }

我只是创建了另一个线程来负责这个操作。多亏了这个初始表单,我可以毫无问题地继续重新绘制(包括我的gif工作)。ShowProgressGifDelegate和HideProgressGifDelegate是将带有gif的pictureBox的visible属性设置为true/false的表单委托。

请注意,在Windows中,传统上不使用动画GIF,而是使用少量AVI动画:有一个Windows本机控件仅用于显示它们。甚至有工具可以将动画GIF转换为AVI(反之亦然)。

如果你把它放在PictureBox控件中,它应该可以正常工作

Public Class Form1

    Private animatedimage As New Bitmap("C:\MyData\Search.gif")
    Private currentlyanimating As Boolean = False

    Private Sub OnFrameChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

        Me.Invalidate()

    End Sub

    Private Sub AnimateImage()

        If currentlyanimating = True Then
            ImageAnimator.Animate(animatedimage, AddressOf Me.OnFrameChanged)
            currentlyanimating = False
        End If

    End Sub

    Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)

        AnimateImage()
        ImageAnimator.UpdateFrames(animatedimage)
        e.Graphics.DrawImage(animatedimage, New Point((Me.Width / 4) + 40, (Me.Height / 4) + 40))

    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        BtnStop.Enabled = False

    End Sub

    Private Sub BtnStop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStop.Click

        currentlyanimating = False
        ImageAnimator.StopAnimate(animatedimage, AddressOf Me.OnFrameChanged)
        BtnStart.Enabled = True
        BtnStop.Enabled = False

    End Sub

    Private Sub BtnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStart.Click

        currentlyanimating = True
        AnimateImage()
        BtnStart.Enabled = False
        BtnStop.Enabled = True

    End Sub

End Class

我遇到了同样的问题,通过实施我曾经面临的几个不同问题,我遇到了不同的解决方案。最后,下面是我将不同帖子中的一些片段放在一起的内容,这些内容对我来说正如预期的那样有效。

private void btnCompare_Click(object sender, EventArgs e)
{
    ThreadStart threadStart = new ThreadStart(Execution);
    Thread thread = new Thread(threadStart);
    thread.SetApartmentState(ApartmentState.STA);
    thread.Start();
}

private void Execution()
{
    btnCompare.Invoke((MethodInvoker)delegate { pictureBox1.Visible = true; });
    Application.DoEvents();

    // Your main code comes here . . .

    btnCompare.Invoke((MethodInvoker)delegate { pictureBox1.Visible = false; });
}

请记住,PictureBox在“属性”窗口中不可见,或者执行以下操作:

private void ComparerForm_Load(object sender, EventArgs e)
{
    pictureBox1.Visible = false;
}