Gets a value indicating whether the specified name is valid.
(in System.dll)
Visual Basic (Declaration)
Function IsValidName ( _
name As String _
) As Boolean
Dim instance As INameCreationService
Dim name As String
Dim returnValue As Boolean
returnValue = instance.IsValidName(name)
bool IsValidName(
string name
)
bool IsValidName(
String^ name
)
function IsValidName(
name : String
) : boolean
An implementation of the INameCreationService can have rules that define the parameters for valid names. This method can be implemented to validate a name and enforce those rules.
The following code example provides an example INameCreationService..::.IsValidName method implementation. The method uses a string validation scheme that examines each character of the specified string to determine whether the specified string is a valid name. The method returns true if the string is valid, or false otherwise.
' Returns whether the specified name contains
' all valid character types.
Public Function IsValidName(ByVal name As String) As Boolean Implements INameCreationService.IsValidName
Dim i As Integer
For i = 0 To name.Length - 1
Dim ch As Char = name.Chars(i)
Dim uc As UnicodeCategory = [Char].GetUnicodeCategory(ch)
Select Case uc
Case UnicodeCategory.UppercaseLetter, UnicodeCategory.LowercaseLetter, UnicodeCategory.TitlecaseLetter, UnicodeCategory.DecimalDigitNumber
Case Else
Return False
End Select
Next i
Return True
End Function
// Returns whether the specified name contains
// all valid character types.
public bool IsValidName(string name)
{
for(int i = 0; i < name.Length; i++)
{
char ch = name[i];
UnicodeCategory uc = Char.GetUnicodeCategory(ch);
switch (uc)
{
case UnicodeCategory.UppercaseLetter:
case UnicodeCategory.LowercaseLetter:
case UnicodeCategory.TitlecaseLetter:
case UnicodeCategory.DecimalDigitNumber:
break;
default:
return false;
}
}
return true;
}
// Returns whether the specified name contains
// all valid character types.
virtual bool IsValidName( String^ name )
{
for ( int i = 0; i < name->Length; i++ )
{
Char ch = name[ i ];
UnicodeCategory uc = Char::GetUnicodeCategory( ch );
switch ( uc )
{
case UnicodeCategory::UppercaseLetter:
case UnicodeCategory::LowercaseLetter:
case UnicodeCategory::TitlecaseLetter:
case UnicodeCategory::DecimalDigitNumber:
break;
default:
return false;
}
}
return true;
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference