有没有办法从WPF中的ColorDialog获取RGB值？ [英] Is there any way to get RGB value from ColorDialog in WPF?

问题描述

嗨朋友们，



有没有办法从WPF中的ColorDialog获取RGB值？



我试过以下代码但是在这里我收到错误

错误4无法隐式转换类型'System.Drawing .Color'到'System.Windows.Media.Color'

代码：

 System.Windows.Forms.ColorDialog cd =  new  System.Windows.Forms.ColorDialog（）; 
颜色clr = cd.Color; 

谢谢

解决方案

Color类具有属性

  public   byte  R { get ; } 
  public   byte  G { get ; } 
  public   byte  B { get ; } 

此片段显示了如何获取RGB值：

 ColorDialog cd =  new  ColorDialog（）; 
 
 DialogResult result = cd.ShowDialog（）; 
 
  if （result == DialogResult.OK）
 {
 Color color = cd.Color; 
 
  byte  R = color.R; 
  byte  G = color.G; 
  byte  B = color.B; 
} 

无法将类型'System.Drawing.Color'隐式转换为'System.Windows.Media。颜色'

问题是你使用的是Windows Forms ColorDialog ，它返回一个系统.Drawing.Color ，而WPF倾向于使用 System.Windows.Media.Color 。



您可以切换到使用WPF颜色选择器 - 例如，这一个 [ ^ ]。



或者，您需要转换返回的颜色：

  var  cd =  new  System.Windows.Forms.ColorDialog（）; 
 ... 
  var  winFormsColor = cd.Color; 
  var  wpfColor = System.Windows.Media.Color.FromArgb（winFormsColor.A，winFormsColor.R，winFormsColor.G，winFormsColor.B）; 

Hi Friends,

Is there any way to get the RGB value from ColorDialog in WPF?

I have tried following code but but here i'm getting error as

Error	4	Cannot implicitly convert type 'System.Drawing.Color' to 'System.Windows.Media.Color'

Code :

System.Windows.Forms.ColorDialog cd = new System.Windows.Forms.ColorDialog();
 Color clr = cd.Color;

Thanks

解决方案

The Color class has properties

public byte R { get; }
public byte G { get; }
public byte B { get; }

This snippet shows how to get the RGB values:

ColorDialog cd = new ColorDialog();

DialogResult result = cd.ShowDialog();

if (result == DialogResult.OK)
{
    Color color = cd.Color;

    byte R = color.R;
    byte G = color.G;
    byte B = color.B;
}

Cannot implicitly convert type 'System.Drawing.Color' to 'System.Windows.Media.Color'

The problem is that you're using the Windows Forms ColorDialog, which returns a System.Drawing.Color, whereas WPF tends to use System.Windows.Media.Color.

You could switch to using a WPF colour picker - for example, this one[^].

Alternatively, you'll need to convert the returned colour:

var cd = new System.Windows.Forms.ColorDialog();
...
var winFormsColor = cd.Color;
var wpfColor = System.Windows.Media.Color.FromArgb(winFormsColor.A, winFormsColor.R, winFormsColor.G, winFormsColor.B);

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