C# WPF DataGrid-分级色标上的颜色单元格
我试图找出是否有一种方法可以在色阶上给单个细胞着色。特别是,我希望在下面得到类似奖金栏的东西: 目前,我已将datagrid的columns后台属性设置为绑定到以下转换器:C# WPF DataGrid-分级色标上的颜色单元格,c#,wpf,colors,converter,C#,Wpf,Colors,Converter,我试图找出是否有一种方法可以在色阶上给单个细胞着色。特别是,我希望在下面得到类似奖金栏的东西: 目前,我已将datagrid的columns后台属性设置为绑定到以下转换器: public class NameToBrushConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalizat
public class NameToBrushConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
double? input = value as double?;
if(input<-5)
{
return Brushes.MediumVioletRed;
}
if(-5<=input && input<-0.5)
{
return Brushes.IndianRed;
}
if (.5 <= input && input < 5)
{
return Brushes.LightGreen;
}
if (5 <= input)
{
return Brushes.LawnGreen;
}
return DependencyProperty.UnsetValue;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotSupportedException();
}
}
}
公共类名称ToBrushConverter:IValueConverter
{
公共对象转换(对象值、类型targetType、对象参数、System.Globalization.CultureInfo区域性)
{
双精度输入=双精度值?;
如果(输入我创建了一个ValueToBrushConverter。您可以这样使用它:
Background="{Binding Path=YourDoubleValue,
Converter={StaticResource ValueToBrushConverter},
ConverterParameter='YourMinDouble|YourMaxDouble'}"
这将创建从绿色(YourMinDouble
)到红色(YourMaxDouble
)的渐变色阶然后为YourDoubleValue
选择相关颜色YourMinDouble
可以是负片,但必须小于YourMaxDouble
。如果YourDoubleValue
不在范围内,则返回画笔。透明
根据您的需要定制
转换器类
[ValueConversion(typeof(double), typeof(Brush))]
class ValueToBrushConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
double number = (double)value;
double min = 0;
double max = 100;
// Get the value limits from parameter
try
{
string[] limits = (parameter as string).Split(new char[] { '|' });
min = double.Parse(limits[0], CultureInfo.InvariantCulture);
max = double.Parse(limits[1], CultureInfo.InvariantCulture);
}
catch (Exception)
{
throw new ArgumentException("Parameter not valid. Enter in format: 'MinDouble|MaxDouble'");
}
if (max <= min)
{
throw new ArgumentException("Parameter not valid. MaxDouble has to be greater then MinDouble.");
}
if (number >= min && number <= max)
{
// Calculate color channels
double range = (max - min) / 2;
number -= max - range;
double factor = 255 / range;
double red = number < 0 ? number * factor : 255;
double green = number > 0 ? (range - number) * factor : 255;
// Create and return brush
Color color = Color.FromRgb((byte)red, (byte)green, 0);
SolidColorBrush brush = new SolidColorBrush(color);
return brush;
}
// Fallback brush
return Brushes.Transparent;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
[ValueConversion(typeof(double)、typeof(Brush))]
类值ToBrushConverter:IValueConverter
{
公共对象转换(对象值、类型targetType、对象参数、CultureInfo区域性)
{
双精度数=(双精度)值;
双最小值=0;
双倍最大值=100;
//从参数获取值限制
尝试
{
string[]limits=(参数为string).Split(新字符[]{'|'});
min=double.Parse(限制[0],CultureInfo.InvariantCulture);
max=double.Parse(限制[1],CultureInfo.InvariantCulture);
}
捕获(例外)
{
抛出新的ArgumentException(“参数无效。输入格式为:'MinDouble | MaxDouble'”);
}
如果(最大值=最小值和编号0)(范围-编号)*系数:255;
//创建并返回笔刷
颜色=颜色。从RGB((字节)红色,(字节)绿色,0);
SolidColorBrush笔刷=新的SolidColorBrush(颜色);
回刷;
}
//回退刷
返回刷。透明;
}
公共对象转换回(对象值、类型targetType、对象参数、CultureInfo区域性)
{
抛出新的NotImplementedException();
}
}