Using WinForms ColorDialog in WPF is giving error: 'Color' parameter type is not valid for formatting property 'Background'

Question

此问题已在线回答，我正在尝试按照这些回答进行操作，但仍然出现以下错误。问题：我这里可能做错了什么，我们该如何解决？

注意：

我正在使用 Windows Form 中的 ColorDialog Class 来实现 wpf
我不想使用第三方工具（WPFToolKit 等）。

WPF相关代码:

Using ....
using System.Windows.Forms; //for winforms' ColorDialog
......
private void BtnTest_Click(object sender, RoutedEventArgs e)
{
   ColorDialog MyDialog = new ColorDialog(); //from Winform
   MyDialog.AllowFullOpen = false;
   MyDialog.ShowHelp = true;

if (MyDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
    try
    {
        TextSelection textSelection = mainRTB.Selection;
        if (!textSelection.IsEmpty)
        {
             //Use the WPF System.Windows.Media.Brushes class instead of System.Drawing.Brushes from WinForms:
            textSelection.ApplyPropertyValue(TextElement.BackgroundProperty, ColorHelper.ToSWMColor(MyDialog.Color)); //error occurs at this line
        }
    }
    catch (Exception ex)
    {
        System.Diagnostics.Debug.WriteLine(ex.Message);
    }
}
}

ColorHelper Class（我在同一个项目中创建的）：

using SDColor = System.Drawing.Color;
using SWMColor = System.Windows.Media.Color;

namespace ColorDialog_for_WPF
{
    public static class ColorHelper
    {
        public static SWMColor ToSWMColor(this SDColor color) => SWMColor.FromArgb(color.A, color.R, color.G, color.B);
        public static SDColor ToSDColor(this SWMColor color) => SDColor.FromArgb(color.A, color.R, color.G, color.B);
    }
}

错误:

'Color' parameter type is not valid for formatting property 'Background'

Answer 1

Background property 是 Brush 类型，而不是 Color。

您需要创建一个 SolidColorBrush。

Using WinForms ColorDialog in WPF is giving error: 'Color' parameter type is not valid for formatting property 'Background'

Using WinForms ColorDialog in WPF is giving error: 'Color' parameter type is not valid for formatting property 'Background'

c#

wpf

colordialog