[UWP]尝试在uwp中实现颜色选择器 [英] [UWP]Trying to implement color picker in uwp

问题描述

我正在尝试使用以下链接在uwp中实现颜色选择器

http://www.c-sharpcorner.com/article/coding4fun-colorpicker-control-in-uwp-with-xaml-and-c-sharp/

但是在关注过程和实施'colorchange'ev它正在给出错误"无法添加事件处理程序"。

其他活动正在运作。只有'colorchange'事件无效

任何想法都会受到赞赏。

XAML

在页面顶部

 
  xmlns：my =" using Coding4Fun.Toolkit.Controls"  
 
  Xaml Part  
 < my：ColorPicker x：Name =" W_Paints" 
 Margin =" 216,203，-6,0" Height =" 40" 
 Width =" 40" ; VerticalAlignment =" Top" 
 Horizo​​ntalAlignment =" Left" />  
   
 

解决方案

你好pariwesh，

我安装了Coding4Fun Toolkit - Controls，在
软件包管理器控制台

PM> Install-Package Coding4Fun.Toolkit.Controls

我在我的UWP项目中使用了这个控件，并且ColorChanged事件运行良好。以下是我的主要代码和项目的属性。

< Page 
x：Class =" AppC4F.MainPage" 
 xmlns =" http：//schemas.microsoft.com/winfx/2006/xaml/presentation" ; 
 xmlns：x =" http://schemas.microsoft.com/winfx/2006/xaml" 
 xmlns：local =" using：AppC4F" 
 xmlns：d =" ; http：//schemas.microsoft.com/expression/blend/2008" 
 xmlns：mc =" http：// schemas .openxmlformats.org /标记兼容性/ 2006" 
 xmlns：c4fcontrols =" using：Coding4Fun.Toolkit.Controls" 
 mc：Ignorable =" d"> 
 
< Grid Background =" {ThemeResource ApplicationPageBackgroundThemeBrush}"> 
< c4fcontrols：ColorPicker ColorChanged =" ColorPicker_ColorChanged"高度= QUOT; 100"宽度= QUOT; 100">< / c4fcontrols：颜色拾取> 
< / Grid> 
< / Page> 

 private void ColorPicker_ColorChanged（object sender，Windows.UI.Color color）
 {
 Debug.WriteLine（color.ToString（））; 
} 

 // project.json 
 {
" dependencies"：{
" Coding4Fun.Toolkit.Controls"：" 2.1.8"，
" Microsoft.NETCore.UniversalWindowsPlatform"：" 5.1.0" 
}，
" frameworks" ;: {
" uap10.0"：{} 
}，
" runtimes"：{
" ; win10-arm"：{}，
" win10-arm-aot"：{}，
" win10-x86"：{}，
" win10-x86-aot" ;：{}，
" win10-x64"：{}，
" win10-x64-aot"：{} 
} 
} 

您可以尝试使用该命令来安装此工具包。

最好的问候，

Xavier Eoro

I'm trying to implement color picker in uwp using below link

http://www.c-sharpcorner.com/article/coding4fun-colorpicker-control-in-uwp-with-xaml-and-c-sharp/

but while following process and implementing 'colorchange' event it is giving error "unable to add event handler".

other events are working .only 'colorchange' event is not working

Any idea would be appreciated .

XAML

At the top of page

xmlns:my="using:Coding4Fun.Toolkit.Controls" 
Xaml Part
<my:ColorPicker x:Name="W_Paints"
                            Margin="216,203,-6,0" Height="40"
                            Width="40" VerticalAlignment="Top"
                            HorizontalAlignment="Left"/>

解决方案

Hello pariwesh,

I installed Coding4Fun Toolkit - Controls, run the following command in the Package Manager Console

PM> Install-Package Coding4Fun.Toolkit.Controls

I used this control in my UWP project and the ColorChanged event worked well. The following is my main code and project’s property.

<Page
    x:Class="AppC4F.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:AppC4F"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:c4fcontrols="using:Coding4Fun.Toolkit.Controls"
    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <c4fcontrols:ColorPicker ColorChanged="ColorPicker_ColorChanged" Height="100" Width="100"></c4fcontrols:ColorPicker>
    </Grid>
</Page>

private void ColorPicker_ColorChanged(object sender, Windows.UI.Color color)
        {
            Debug.WriteLine(color.ToString());
        }

//project.json
{
  "dependencies": {
    "Coding4Fun.Toolkit.Controls": "2.1.8",
    "Microsoft.NETCore.UniversalWindowsPlatform": "5.1.0"
  },
  "frameworks": {
    "uap10.0": {}
  },
  "runtimes": {
    "win10-arm": {},
    "win10-arm-aot": {},
    "win10-x86": {},
    "win10-x86-aot": {},
    "win10-x64": {},
    "win10-x64-aot": {}
  }
}

You could try to use the command to install this toolkit.

Best Regards,

Xavier Eoro

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