WPF에서 XML 요소의 이미지를 바인딩하는 방법

Question

XML 문서에서 이미지를 바인딩하는 데 문제가 있습니다.

string xml = "< ?xml version=\"1.0\" standalone=\"yes\"? > <Citizens> " + 
     "<Citizen>" + 
     "<fname> Aziz </fname>" + 
     "< lname>Mirzaev< /lname>" + 
     "< pname>Ibrakhimovich< /pname>" + 
     "< bday>25.01.1986< /bday>" +    
     "<pic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/pic>" + 
     "< /Citizen>" + 
     "< /Citizens>"; 

그리고 내 목록 상자와 바인딩 클래스를했습니다 : 내 XML의 문서는

public class Citizen 
{ 
    public string FirstName { get; set; } 
    public string LastName { get; set; } 
    public string PatronymicName { get; set; } 
    public string BirthdayDate { get; set; } 
    public BitmapSource Picture { get; set; } 

    private string text; 
    public string Text 
    { 
     get { return text; } 
     set { text = value; } 
    } 

    public string FullName 
    { 
     get { return string.Format("{0} {1} {2}", FirstName, LastName, PatronymicName); } 
    } 

    public override string ToString() 
    { 
     return String.Format("{0} {1} {2}{3}{4}", FirstName, LastName, PatronymicName, 
      Environment.NewLine, BirthdayDate); 
    } 
} 

그리고 문제는 BitmapSource는 다른 응용 데이터 형식이에 XML에서 값을 변환에있다.

Answer 1

System.String과 BitmapSource간에 직접적인 변환이 없기 때문입니다. System.Windows.Data.IValueConverter 인터페이스를 구현하는 클래스를 만들어야합니다. 이 클래스는 Convert 메서드의 입력으로 바인딩 된 개체 값 (이 경우 <pic> 요소의 값을 문자열로 받음)을 받고 해당 값에서 BitmapSource를 반환해야합니다.

Answer 2

고관절증 나는 그 변환기를 만들었습니다.

[ValueConversion(typeof(String), typeof(BitmapImage))] 
public class ImageConverter : IValueConverter 
{ 
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture) 
    { 
     byte[] val = System.Convert.FromBase64String((String)value); 

     MemoryStream ms = new MemoryStream(val); 

     BitmapImage bi = new BitmapImage(); 
     bi.BeginInit(); 
     bi.StreamSource = ms; 
     bi.EndInit(); 

     return bi; 
    } 
} 

BTW xml의 이미지가 올바른 이미지 문자열이 아닙니다. 이제 DB에서 직접 이미지를 얻습니다.).

고맙습니다.