using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Data; namespace System.Windows.Controls
{
[ValueConversion(typeof(string), typeof(string))]
public class NumberToChineseConverter : IValueConverter
{ public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
string valueString = value.ToString(); decimal num = 0; if (!decimal.TryParse(valueString, out num))
{
return DependencyProperty.UnsetValue;
} string[] tmp_Array = num.ToString().Split(new char[] { '.' }, StringSplitOptions.None); // 这个是小数点前的数字
string beforeDecimalPoint = tmp_Array[0];
// 这个是小数点后的数字
string afterDecimalPoint = tmp_Array.Length > 1 ? tmp_Array[1] : string.Empty; // 先将数字四位为一组分别放到一个List中
List<ChineseNum> beforeDecimalPointGroup = new List<ChineseNum>();
int maxIndex = beforeDecimalPoint.Length - 1;
int count = 0;
string tmpValue = string.Empty; for (var n = maxIndex; n >= 0; n--)
{
tmpValue = string.Format("{0}{1}", beforeDecimalPoint[n].ToString(), tmpValue); if (count == 3 || n == 0)
{
var number = new ChineseNum()
{
UnitIndex = beforeDecimalPointGroup.Count,
Number = tmpValue
}; beforeDecimalPointGroup.Add(number); count = 0;
tmpValue = string.Empty;
}
else
{
count++;
}
} string result = string.Empty;
var tmp = beforeDecimalPointGroup.OrderBy(c => c.UnitIndex); // 将每4位的数字组合起来
foreach (var a in tmp)
{
result = string.Format("{1}{0}", result, a.Value);
} // 整合小数部分
if (!string.IsNullOrEmpty(afterDecimalPoint))
{
// 增加点
result = string.Format("{0}{1}", result, "点"); // 整合每个位置上得小数
for (var n = 0; n < afterDecimalPoint.Length; n++)
{
result = string.Format("{0}{1}", result, GetNumber(int.Parse(afterDecimalPoint[n].ToString())));
}
} return result;
} static string GetNumber(int n)
{
string num = string.Empty; switch (n)
{
case 0: num = "零"; break;
case 1: num = "壹"; break;
case 2: num = "贰"; break;
case 3: num = "叁"; break;
case 4: num = "肆"; break;
case 5: num = "伍"; break;
case 6: num = "陆"; break;
case 7: num = "柒"; break;
case 8: num = "捌"; break;
case 9: num = "玖"; break;
default: break;
} return num;
} public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
} public class ChineseNum
{
public int UnitIndex { get; set; } public string Number { get; set; } public string Value
{
get
{
// 当只有一个0时，返回0，此例仅适用于数字0
if (Number == "0")
{
return PlaceHolder;
} // 当只具备0时，该四位数字不需要显示
if (string.IsNullOrEmpty(Number.Trim(new char[] { '0' })))
{
return string.Empty;
}
else // 当具备其他数字时，组合中文大写数字
{
string value = string.Empty; for (var n = 0; n < Number.Length; n++)
{
value = string.Format("{0}{1}{2}", value, GetNumber(n), GetUnit(n));
} // 组合当前4位数所在的单位
return string.Format("{0}{1}", value, UnitValue(UnitIndex));
}
}
} public string PlaceHolder
{
get
{
return "零";
}
} string GetNumber(int index)
{
var n = int.Parse(Number[index].ToString());
string num = string.Empty; // 当0为最后一位时 或者当下一位也为0时 不显示该位
if (n == 0 && ((Number.Length == index + 1) || Number[index + 1] == '0'))
{
return num;
} switch (n)
{
case 0: num = "零"; break;
case 1: num = "壹"; break;
case 2: num = "贰"; break;
case 3: num = "叁"; break;
case 4: num = "肆"; break;
case 5: num = "伍"; break;
case 6: num = "陆"; break;
case 7: num = "柒"; break;
case 8: num = "捌"; break;
case 9: num = "玖"; break;
default: break;
} return num;
} /// <summary>
/// 获取当前位置上得数字的中文大写单位
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
string GetUnit(int index)
{
string unit = string.Empty; int unitIndex = Number.Length - index; if (Number[index] == '0')
return unit; switch (unitIndex)
{
case 4: unit = "千"; break;
case 3: unit = "百"; break;
case 2: unit = "拾"; break;
} return unit;
} string UnitValue(int index)
{
string unit = string.Empty; switch (index)
{
case 1: unit = "万"; break;
case 2: unit = "亿"; break;
case 3: unit = "兆"; break;
case 4: unit = "京"; break;
case 5: unit = "垓"; break;
case 6: unit = "秭"; break;
default: break;
} return unit;
}
}
}
Number: 12345
Chinese: 壹万贰千叁百肆拾伍