将 System.Drawing.Color 转换为 RGB 和十六进制值 [英] Convert System.Drawing.Color to RGB and Hex Value

问题描述

使用 C# 我试图开发以下两个.我这样做的方式可能有一些问题，需要您的善意建议.另外，我不知道是否有任何现有的方法可以做到这一点.

Using C# I was trying to develop the following two. The way I am doing it may have some problem and need your kind advice. In addition, I dont know whether there is any existing method to do the same.

private static String HexConverter(System.Drawing.Color c)
{
    String rtn = String.Empty;
    try
    {
        rtn = "#" + c.R.ToString("X2") + c.G.ToString("X2") + c.B.ToString("X2");
    }
    catch (Exception ex)
    {
        //doing nothing
    }

    return rtn;
}

private static String RGBConverter(System.Drawing.Color c)
{
    String rtn = String.Empty;
    try
    {
        rtn = "RGB(" + c.R.ToString() + "," + c.G.ToString() + "," + c.B.ToString() + ")";
    }
    catch (Exception ex)
    {
        //doing nothing
    }

    return rtn;
}

谢谢.

推荐答案

我没看到这里的问题.代码看起来不错.

I'm failing to see the problem here. The code looks good to me.

我唯一能想到的就是 try/catch 块是多余的 -- Color 是一个结构体，R、G 和 B 是字节，所以 c 不能为 null 并且 cRToString()、cGToString() 和 cBToString() 实际上不会失败(我看到它们失败的唯一方法是使用 NullReferenceException，它们实际上都不能为空).

The only thing I can think of is that the try/catch blocks are redundant -- Color is a struct and R, G, and B are bytes, so c can't be null and c.R.ToString(), c.G.ToString(), and c.B.ToString() can't actually fail (the only way I can see them failing is with a NullReferenceException, and none of them can actually be null).

您可以使用以下方法清理整个内容:

You could clean the whole thing up using the following:

private static String HexConverter(System.Drawing.Color c)
{
    return "#" + c.R.ToString("X2") + c.G.ToString("X2") + c.B.ToString("X2");
}

private static String RGBConverter(System.Drawing.Color c)
{
    return "RGB(" + c.R.ToString() + "," + c.G.ToString() + "," + c.B.ToString() + ")";
}

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