Question

我是C＃的新手，我试图在点击按钮时保存位图图像。我正在使用visual studio 2010。我可以保存我的图像，并将特定字符串作为文件名传递。这是我保存图片的代码： -

    private void button1_Click(object sender, EventArgs e)
    { 

        bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
        gfxScreenshot = Graphics.FromImage(bmpScreenshot);
        gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
        bmpScreenshot.Save("img.jpg", ImageFormat.Jpeg);
    }

但我想保存此图像，其名称为捕获图像的时间。所以我在我的代码中添加了这个： -

    private void button1_Click(object sender, EventArgs e)
    { 
        string time = DateTime.Now.ToString("hh:mm:ss");
        string img = time + ".jpg";
        bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
        gfxScreenshot = Graphics.FromImage(bmpScreenshot);
        gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
        bmpScreenshot.Save(img, ImageFormat.Jpeg);

    }

这段代码构建正常但是当我点击我的按钮时，我遇到了这个例外： -

NotSupportedException was handled

任何人都可以告诉我如何使用名称作为时间码保存我的图像。

Answer 1

文件名不应包含:。尝试将其更改为下划线或只是删除它：

private void button1_Click(object sender, EventArgs e)
{ 
    string time = DateTime.Now.ToString("HHmmss");
    string img = time + ".jpg";
    bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
    gfxScreenshot = Graphics.FromImage(bmpScreenshot);
    gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
    bmpScreenshot.Save(img, ImageFormat.Jpeg);

}

无法使用变量名

1 个答案: