wpf-visual-process-framework/VisionFrame.Base/Converter/SizeConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace VisionFrame.Base.Converter
{
    public class SizeConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            double r = 2;
            if (parameter != null)
            {
                double.TryParse(parameter.ToString(), out r);
            }
            // 实际的宽高值    
            // 将这个值乘2返回出去
            if (value != null && double.TryParse(value.ToString(), out double new_value))
                return new_value * r;

            return value;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return null;
        }
    }
}