topic Color Picker Combo Box in ArcGIS API for Silverlight Questions

Color Picker Combo Box

yousofothman — Sun, 12 Dec 2021 05:20:07 GMT

hi every body

i use these color picker ComboBox:

<ComboBox x:Name="BorderBrushCmbo" FlowDirection="RightToLeft" ItemsSource="{Binding Colors}" SelectedItem="{Binding Color, Mode=TwoWay}" Width="140" Height="24">
                        <ComboBox.ItemTemplate>
                            <DataTemplate>
                                <Canvas Background="{Binding ., Converter={StaticResource StringToBrushConverter}}" Width="100" Height="18">
                                </Canvas>
                            </DataTemplate>
                        </ComboBox.ItemTemplate>
                    </ComboBox>

to display colors for users

it work very well but i could not read the value of selected color of ComboBox to display it on the symbol fore drawing graphic on the map

my question is how to read the value of selected color from color picker ComboBox

i try to do these:

 lineSymbole.Color = new SolidColorBrush((Color)BorderBrushCmbo.SelectedItem);

then i try also these:

Color c = (Color)Convert.ChangeType(BorderBrushCmbo.SelectedItem.ToString(), typeof(Color),null);
lineSymbole.Color = new SolidColorBrush(c);

but I face a problem that i can not convert system color to solid color brush

any help please????

Re: Color Picker Combo Box

Asgharkhan — Tue, 17 Mar 2015 12:24:44 GMT

try on this ,

lineSymbole.Color = new SolidColorBrush((Color)BorderBrushCmbo.SelectedItem) as SolidColorBrush;

Re: Color Picker Combo Box

yousofothman — Wed, 18 Mar 2015 05:10:49 GMT

thank you for replying Asghar khan

i try it but it give me these error message

"Specified cast is not valid."

Re: Color Picker Combo Box

yousofothman — Wed, 18 Mar 2015 09:12:42 GMT

an help please this is urgent

Re: Color Picker Combo Box

DominiqueBroux — Wed, 18 Mar 2015 09:39:03 GMT

Difficult to answer to this question without knowing how is defined your 'Colors' property which is binded to the ItemsSource.

Very likely it's just a string collection so 'SelectedItem' is a string and you eventually have to convert a string to a Brush.

It's likely what you are already doing in your 'StringToBrushConverter' so the same kind of code should work.

Re: Color Picker Combo Box

Asgharkhan — Wed, 18 Mar 2015 16:38:43 GMT

This is possible in one condition if u define dependency.

@yousof othman i have a sample in wpf, i well send u tommorow.

Today i was sick and not go to office...

Please provide me your email

Re: Color Picker Combo Box

yousofothman — Thu, 19 Mar 2015 05:04:17 GMT

this is my email

yousofmakkawy@yahoo.com

Re: Color Picker Combo Box

yousofothman — Sun, 12 Dec 2021 05:20:10 GMT

thank you very much

i return back the StringToBrushConverter file

and i try these

string colorString = BorderBrushCmbo1.SelectionBoxItem.ToString();
                    Color c = new Color();
                c.A = 255;
                c.R = byte.Parse(colorString.Substring(0, 2), NumberStyles.HexNumber);
                c.G = byte.Parse(colorString.Substring(2, 2), NumberStyles.HexNumber);
                c.B = byte.Parse(colorString.Substring(4, 2), NumberStyles.HexNumber);
                  
                        lineSymbole.Color = new SolidColorBrush(c);

it work for me

thank you very much