Char::IsControl Method (Char)

 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Indicates whether the specified Unicode character is categorized as a control character.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public:
static bool IsControl(
	wchar_t c
)

Parameters

c
Type: System::Char

The Unicode character to evaluate.

Return Value

Type: System::Boolean

true if c is a control character; otherwise, false.

Control characters are formatting and other non-printing characters, such as ACK, BEL, CR, FF, LF, and VT. T The Unicode standard assigns code points from \U0000 to \U001F, \U007F, and from \U0080 to \U009F to control characters. According to the Unicode standard, these values are to be interpreted as control characters unless their use is otherwise defined by an application. Valid control characters are members of the UnicodeCategory::Control category.

The following example lists the Unicode code point of each of the control characters.

using namespace System;

void main()
{
   int charsWritten = 0;

   for (int ctr = 0x00; ctr <= 0xFFFF; ctr++)
   {
      wchar_t ch = ctr;
      if (Char::IsControl(ch))
      {
         Console::Write(L"\U{0:X4}    ", ctr);
         charsWritten++;
         if (charsWritten % 6 == 0)
            Console::WriteLine();
      }     
   }  
}
// The example displays the following output:
//       U0000    U0001    U0002    U0003    U0004    U0005
//       U0006    U0007    U0008    U0009    U000A    U000B
//       U000C    U000D    U000E    U000F    U0010    U0011
//       U0012    U0013    U0014    U0015    U0016    U0017
//       U0018    U0019    U001A    U001B    U001C    U001D
//       U001E    U001F    U007F    U0080    U0081    U0082
//       U0083    U0084    U0085    U0086    U0087    U0088
//       U0089    U008A    U008B    U008C    U008D    U008E
//       U008F    U0090    U0091    U0092    U0093    U0094
//       U0095    U0096    U0097    U0098    U0099    U009A
//       U009B    U009C    U009D    U009E    U009F

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
Show: