INameCreationService.ValidateName(String) Method

Reference

Definition

Namespace:: System.ComponentModel.Design.Serialization

Assembly:: System.ComponentModel.TypeConverter.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Important

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Gets a value indicating whether the specified name is valid.

public:
 void ValidateName(System::String ^ name);

public void ValidateName (string name);

abstract member ValidateName : string -> unit

Public Sub ValidateName (name As String)

Parameters

name: String

The name to validate.

Examples

The following code example provides an example INameCreationService.IsValidName method implementation that 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 throws an exception if the string is not valid.

// Throws an exception if the specified name does not contain 
// all valid character types.
virtual void ValidateName( 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:
            throw gcnew Exception( String::Format( "The name '{0}' is not a valid identifier.", name ) );
      }
   }
}

// Throws an exception if the specified name does not contain 
// all valid character types.
public void ValidateName(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:
                throw new Exception("The name '"+name+"' is not a valid identifier.");                
        }
    }
}

' Throws an exception if the specified name does not contain 
' all valid character types.
Public Sub ValidateName(ByVal name As String) Implements INameCreationService.ValidateName
    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
                Throw New Exception("The name '" + name + "' is not a valid identifier.")
        End Select
    Next i
End Sub

Remarks

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.

This method is similar to IsValidName, except that this method throws an exception if the name is invalid. This allows implementers to provide detailed information in the exception message.

Applies to

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