The System.IFormattable interface define a
method for formatting the value of an object into a string representation it
contains the IFormattable.ToString(string, IFormatProvider) method.
Classes that require more control over the
formatting of strings than Object.ToString provides should implement
IFormattable, whose ToString method uses the current thread's CurrentCulture
property.
Syntex
<ComVisibleAttribute(True)> _
Public Interface IFormattable
Example
using
System;
using
System.Collections;
using
System.Collections.Generic;
using
System.Data;
using
System.Diagnostics;
class
YourClass :
IFormattable, IComparable
{
public string
Value;
public virtual
string ToString(string
Format, IFormatProvider Provider)
{
return Value;
}
public virtual
int CompareTo(object
A)
{
int functionReturnValue = 0;
if ((Value == A.Value))
{
functionReturnValue = 0;
}
else if
((Value < A.Value))
{
functionReturnValue = 20;
}
else
{
functionReturnValue = 12;
}
return functionReturnValue;
}
public YourClass(string
v)
{
this.Value = v;
}
}
static
class Module1
{
public static
void Main()
{
YourClass A =
new YourClass("First");
YourClass B =
new YourClass("Second");
Console.WriteLine(A);
Console.WriteLine(B);
Console.WriteLine(A.CompareTo(B));
Console.ReadLine();
}
}