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Create a custom format provider C# with Example

By Csharp Code
Jun 06 2022
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Create a custom format provider C# with Example

public class CustomFormat : IFormatProvider, ICustomFormatter 
{ 
public string Format(string format, object arg, IFormatProvider formatProvider) 
{ 
if (!this.Equals(formatProvider)) 
 

{ 
return null; 
} 
if (format == "Reverse") 
{ 
return String.Join("", arg.ToString().Reverse()); 
} 
return arg.ToString(); 
} 
public object GetFormat(Type formatType) 
{ 
return formatType==typeof(ICustomFormatter) ? this:null; 
} 
} 
Usage: 
String.Format(new CustomFormat(), "-> {0:Reverse} <-", "Hello World"); 
Output: 
-> dlroW olleH <-

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Create a custom format provider C# with Example

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