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<p>1 версия</p> <p><b>Новая страница</b></p><div>==ICustomFormatter IFormatProvider==<br /> <br /> <br /> <br /> &lt;source lang=&quot;csharp&quot;&gt;/*<br /> Quote from<br /> Accelerated C# 2005<br /> # By Trey Nash<br /> # ISBN: 1-59059-717-6<br /> # 432 pp.<br /> # Published: Aug 2006<br /> */<br /> using System;<br /> using System.Text;<br /> using System.Globalization;<br /> public class ComplexDbgFormatter : ICustomFormatter, IFormatProvider<br /> {<br /> public object GetFormat( Type formatType ) {<br /> if( formatType == typeof(ICustomFormatter) ) {<br /> return this;<br /> } else {<br /> return CultureInfo.CurrentCulture.<br /> GetFormat( formatType );<br /> }<br /> }<br /> public string Format( string format, object arg, IFormatProvider formatProvider ) {<br /> if( arg.GetType() == typeof(Complex) &amp;&amp; format == &quot;DBG&quot; ) {<br /> Complex cpx = (Complex) arg;<br /> StringBuilder sb = new StringBuilder();<br /> sb.Append( arg.GetType().ToString() + &quot; &quot; );<br /> sb.AppendFormat( &quot;Real:{0} &quot;, cpx.Real );<br /> sb.AppendFormat( &quot;Img: {0} &quot;, cpx.Img );<br /> return sb.ToString();<br /> } else {<br /> IFormattable formatable = arg as IFormattable;<br /> if( formatable != null ) {<br /> return formatable.ToString( format, formatProvider );<br /> } else {<br /> return arg.ToString();<br /> }<br /> }<br /> }<br /> }<br /> public struct Complex : IFormattable<br /> {<br /> public Complex( double Real, double Img ) {<br /> this.Real = Real;<br /> this.Img = Img;<br /> }<br /> public string ToString( string format, IFormatProvider formatProvider ) {<br /> StringBuilder sb = new StringBuilder();<br /> sb.Append( &quot;( &quot; + Real.ToString(format, formatProvider) );<br /> sb.Append( &quot; : &quot; + Img.ToString(format, formatProvider) );<br /> sb.Append( &quot; )&quot; );<br /> return sb.ToString();<br /> }<br /> public double Real;<br /> public double Img;<br /> }<br /> public class MainClass<br /> {<br /> static void Main() {<br /> CultureInfo local = CultureInfo.CurrentCulture;<br /> CultureInfo germany = new CultureInfo( &quot;de-DE&quot; );<br /> Complex cpx = new Complex( 12.3456, 1234.56 );<br /> string strCpx = cpx.ToString( &quot;F&quot;, local );<br /> Console.WriteLine( strCpx );<br /> strCpx = cpx.ToString( &quot;F&quot;, germany );<br /> Console.WriteLine( strCpx );<br /> ComplexDbgFormatter dbgFormatter = new ComplexDbgFormatter();<br /> strCpx = String.Format( dbgFormatter,&quot;{0:DBG}&quot;, cpx );<br /> Console.WriteLine( &quot;\nDebugging output:\n{0}&quot;, strCpx );<br /> }<br /> }&lt;/source&gt;<br /> &lt;pre class=codeResult&gt;( 12.35 : 1234.56 )<br /> ( 12,35 : 1234,56 )<br /> Debugging output:<br /> Complex Real:12.3456 Img: 1234.56&lt;/pre&gt;</div>

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