How to convert color code into media brush

Question

I have a rectangle that i want to fill with a color  When i write Fill     FFFFFF90  it shows me an error      Cannot implicitly convert type  string  to  System Windows Media Brush   Please give me some advice

User · Answer

For simplicity you could create an extension:-

    public static SolidColorBrush ToSolidColorBrush(this string hex_code)
    {
        return (SolidColorBrush)new BrushConverter().ConvertFromString(hex_code);
    }

And then to use:-

 SolidColorBrush accentBlue = "#3CACDC".ToSolidColorBrush();

User · Answer

Sorry to be so late to the party  I came across a similar issue  in WinRT  I m not sure whether you re using WPF or WinRT  but they do differ in some ways  some better than others   Hopefully this will help people across the board  whichever situation they re in   You could always use the code from the converter class I created to re-use and do in your C  code-behind  or wherever you re using it  to be honest   I made it with the intention that a 6-digit  RGB   or an 8-digit  ARGB  Hex value could be used either way   So I created a converter class   public class StringToSolidColorBrushConverter   IValueConverter       public object Convert object value  Type targetType  object parameter  string language                var hexString    value as string  Replace                    if  string IsNullOrWhiteSpace hexString   throw new FormatException            if  hexString Length    6    hexString Length    8  throw new FormatException             try                       var a   hexString Length    8   hexString Substring 0  2     255               var r   hexString Length    8   hexString Substring 2  2    hexString Substring 0  2               var g   hexString Length    8   hexString Substring 4  2    hexString Substring 2  2               var b   hexString Length    8   hexString Substring 6  2    hexString Substring 4  2                return new SolidColorBrush ColorHelper FromArgb                  byte Parse a  System Globalization NumberStyles HexNumber                   byte Parse r  System Globalization NumberStyles HexNumber                   byte Parse g  System Globalization NumberStyles HexNumber                   byte Parse b  System Globalization NumberStyles HexNumber                       catch                       throw new FormatException                         public object ConvertBack object value  Type targetType  object parameter  string language                throw new NotImplementedException              Added it into my App xaml    lt ResourceDictionary gt               lt converters StringToSolidColorBrushConverter x Key  StringToSolidColorBrushConverter    gt           lt  ResourceDictionary gt    And used it in my View s Xaml    lt Grid gt       lt Rectangle Fill   Binding RectangleColour                 Converter  StaticResource StringToSolidColorBrushConverter                   Height  20  Width  20    gt   lt  Grid gt    Works a charm   Side note    Unfortunately  WinRT hasn t got the System Windows Media BrushConverter that H B  suggested  so I needed another way  otherwise I would have made a VM property that returned a SolidColorBrush  or similar  from the RectangleColour string property

User · Answer

What version of WPF are you using   I tried in both 3 5 and 4 0  and Fill   FF000000  should work fine in a  in the XAML   There is another syntax  however  if it doesn t   Here s a 3 5 XAML that I tested with two different ways   Better yet would be to use a resource    lt Window x Class  WpfApplication2 MainWindow      xmlns  http   schemas microsoft com winfx 2006 xaml presentation      xmlns x  http   schemas microsoft com winfx 2006 xaml      Title  MainWindow  Height  350  Width  525  gt   lt Grid gt       lt Rectangle Height  100  HorizontalAlignment  Left  Margin  100 12 0 0  Name  rectangle1  Stroke  Black  VerticalAlignment  Top  Width  200  Fill   FF00AE00    gt       lt Rectangle Height  100  HorizontalAlignment  Left  Margin  100 132 0 0  Name  rectangle2  Stroke  Black  VerticalAlignment  Top  Width  200   gt           lt Rectangle Fill gt               lt SolidColorBrush Color   FF00AE00    gt           lt  Rectangle Fill gt       lt  Rectangle gt   lt  Grid gt

User · Answer

For WinRT  Windows Store App   using Windows UI  using Windows UI Xaml Media       public static Brush ColorToBrush string color     color     E7E44D                color   color Replace                   if  color Length    6                        return new SolidColorBrush ColorHelper FromArgb 255                  byte Parse color Substring 0  2   System Globalization NumberStyles HexNumber                   byte Parse color Substring 2  2   System Globalization NumberStyles HexNumber                   byte Parse color Substring 4  2   System Globalization NumberStyles HexNumber                       else                       return null

User · Answer

You could use the same mechanism the XAML reading system uses  Type converters  var converter   new System Windows Media BrushConverter    var brush    Brush converter ConvertFromString   FFFFFF90    Fill   brush

User · Answer

In code  you need to explicitly create a Brush instance   Fill   new SolidColorBrush Color FromArgb 0xff  0xff  0x90

[c#] How to convert color code into media.brush?

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