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我正在使用 WPF 数据绑定。如果我指定，我可以格式化数字StringFormat={}{0:C}。但是，如果我使用StringFormat={}{0:X2}，它将给出以下异常：

System.Windows.Data Error: 6 : 'StringFormat' converter failed to convert value '10' (type 'Double'); fallback value will be used, if available. BindingExpression:Path=Value; DataItem='Slider' (Name='SliderG'); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String') FormatException:'System.FormatException: Format specifier was invalid.
   at System.Number.FormatDouble(Double value, String format, NumberFormatInfo info)
   at System.Double.ToString(String format, IFormatProvider provider)
   at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(IFormatProvider provider, String format, Object[] args)
   at System.Windows.Data.BindingExpression.ConvertHelper(IValueConverter converter, Object value, Type targetType, Object parameter, CultureInfo culture)'
'WpfApplication1.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

有人知道吗？

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1 回答 1

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十六进制格式说明符仅适用于整数类型。您正在尝试将其应用于浮点 ( double) 值。如果要将绑定值格式化为十六进制值，则需要将绑定值转换为整数类型（int、等）。long

于 2012-10-16T03:04:19.377 回答