Question

我正在创建一个带有两个pictureBox的应用程序，其中图像从数组加载并随机更改每个计时器滴答。我面临的问题是有时候没有加载图像，让图片框有一点红叉。我读过我应该在加载新图片之前处理上一张图片（我是C＃newbie），但是如果没有在第一个刻度线上崩溃应用程序我就无法工作。你能帮帮我吗？

private void timer_Tick(object sender, EventArgs e)
    {
        index1 = rand.Next(0, pics.Length - 1);
        index2 = rand.Next(0, pics.Length - 1);
        pcb1.ImageLocation = pics[index1];
        pcb2.ImageLocation = pics[index2];
    }



try
{
    pcb1.Image.Dispose();
    pcb2.Image.Dispose();
    index1 = rand.Next(0, pics.Length - 1);
    index2 = rand.Next(0, pics.Length - 1);
    pcb1.ImageLocation = pics[index1];
    pcb2.ImageLocation = pics[index2];
}
catch (Exception)
{ 
    throw; 
}

- 告诉我System.ArgumentException

Answer 1

可能的解决方案：

try
{
    private void timer_Tick(object sender, EventArgs e)
    {
        index1 = rand.Next(0, pics.Length);
        if (File.Exists(pics[index1]))
        {
            Image img1 = Image.FromFile(pics[index1]);
            pcb1.Image = img1;
        }
        index2 = rand.Next(0, pics.Length);
        if (File.Exists(pics[index2]))
        {
            Image img2 = Image.FromFile(pics[index2]);
            pcb2.Image = img2;
        }
    }
}
catch (OutOfMemoryException oomEx)
{
    MessageBox.Show("Not a valid image.");
}
catch (Exception ex)
{
    //all others...respond appropriately
}

尝试处理图像时应用程序崩溃

1 个答案: