NumberFormatInfo.cs :  » Development » NExcel » NExcelUtils » C# / CSharp Open Source

using System;

namespace NExcelUtils{
  /// <summary>
  /// Custom NumberFormatInfo.
  /// Works almost as java.text.NumberFormat.
  /// </summary>
  public class NumberFormatInfo : IFormatProvider, ICustomFormatter
  {
    /// <summary>
    /// Pattern.
    /// </summary>
    private string pattern = "0";  // default value

    public string Pattern
    {
      get
      {
        return this.pattern;
      }
    }

    public NumberFormatInfo()
    {
    }


    public NumberFormatInfo(string pattern)
    {
      this.pattern = pattern;
    }


    // String.Format calls this method to get an instance of an
    // ICustomFormatter to handle the formatting.
    public object GetFormat (Type service)
    {
      if (service == typeof (ICustomFormatter)) 
      {
        return this;
      }
      else
      {
        return null;
      }
    }
    // After String.Format gets the ICustomFormatter, it calls this format
    // method on each argument.
    public string Format (string format, object arg, IFormatProvider provider) 
    {
      if (arg is double)
      {
        return ( (double) arg).ToString(this.pattern);
      }
      if (arg is int)
      {
        return ( (int) arg).ToString(this.pattern);
      }
      if (arg is long)
      {
        return ( (long) arg).ToString(this.pattern);
      }
      if (arg is decimal)
      {
        return ( (decimal) arg).ToString(this.pattern);
      }
      // [TODO-NExcel_Next] - add other types

      // otherwise
      return arg.ToString();

    }
  
  }
}