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C# 의 Math.Round 메소드는 반올림 메소드이지만, 사사오입이 아닌 은행원 메소드인가 뭐시기 해서 
짝수에 가까워 지게 설계 되어있다. 
나는 1.45 를 반올림하면 1.5를 얻고 싶다. 
근데 Round 메소드는 1.4 를 준다 ㅠㅠ
대충 돌려보니 이거 맞는거 같다. 
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public static string GetFormattedString(object obj, int dgt)
{
&nbsp;&nbsp;&nbsp; double cv = 0;
&nbsp;&nbsp;&nbsp; string dumStr = string.Empty;
&nbsp;&nbsp;&nbsp; int totLen = 2 + dgt;
&nbsp;
&nbsp;&nbsp;&nbsp; for (int i = 0; i &lt; dgt; i++)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dumStr += "0";
&nbsp;
&nbsp;&nbsp;&nbsp; if (obj == null)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return "0." + dumStr;
&nbsp;
&nbsp;&nbsp;&nbsp; if (obj is string)
&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (Convert.ToString(obj as string).Trim() == string.Empty)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return "0." + dumStr;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cv = double.Parse(Convert.ToString(obj as string).Trim());
&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp; else if (obj is double)
&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cv = (double)obj;
&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp; else if (obj is int)
&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cv = (int)obj;
&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp; else if (obj is float)
&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cv = (float)obj;
&nbsp;&nbsp;&nbsp; }
&nbsp;
&nbsp;&nbsp;&nbsp; // Gets a NumberFormatInfo associated with the en-US culture.
&nbsp;&nbsp;&nbsp; System.Globalization.NumberFormatInfo nfi = new System.Globalization.CultureInfo("en-US", false).NumberFormat;
&nbsp;&nbsp;&nbsp; // Displays the same value with four decimal digits.
&nbsp;&nbsp;&nbsp; nfi.NumberDecimalDigits = dgt;
&nbsp;
&nbsp;&nbsp;&nbsp; return cv.ToString("N", nfi);
}
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C# 반올림 메소드 Math.Round 대체