XDeclaration.cs

Go to the documentation of this file.

using System.Text;
 
namespace System.Xml.Linq;
 
public class XDeclaration
{
    private string _version;
 
    private string _encoding;
 
    private string _standalone;
 
    public string? Encoding
    {
        get
        {
            return _encoding;
        }
        set
        {
            _encoding = value;
        }
    }
 
    public string? Standalone
    {
        get
        {
            return _standalone;
        }
        set
        {
            _standalone = value;
        }
    }
 
    public string? Version
    {
        get
        {
            return _version;
        }
        set
        {
            _version = value;
        }
    }
 
    public XDeclaration(string? version, string? encoding, string? standalone)
    {
        _version = version;
        _encoding = encoding;
        _standalone = standalone;
    }
 
    public XDeclaration(XDeclaration other)
    {
        if (other == null)
        {
            throw new ArgumentNullException("other");
        }
        _version = other._version;
        _encoding = other._encoding;
        _standalone = other._standalone;
    }
 
    internal XDeclaration(XmlReader r)
    {
        _version = r.GetAttribute("version");
        _encoding = r.GetAttribute("encoding");
        _standalone = r.GetAttribute("standalone");
        r.Read();
    }
 
    public override string ToString()
    {
        StringBuilder stringBuilder = System.Text.StringBuilderCache.Acquire();
        stringBuilder.Append("<?xml");
        if (_version != null)
        {
            stringBuilder.Append(" version=\"");
            stringBuilder.Append(_version);
            stringBuilder.Append('"');
        }
        if (_encoding != null)
        {
            stringBuilder.Append(" encoding=\"");
            stringBuilder.Append(_encoding);
            stringBuilder.Append('"');
        }
        if (_standalone != null)
        {
            stringBuilder.Append(" standalone=\"");
            stringBuilder.Append(_standalone);
            stringBuilder.Append('"');
        }
        stringBuilder.Append("?>");
        return System.Text.StringBuilderCache.GetStringAndRelease(stringBuilder);
    }
}