代码转换后无法使用实例引用访问

Question

我有以下代码是在使用telerik代码转换器将一段遗留代码转换为C＃后创建的，但它产生了错误

错误473成员＆＃39; System.Xml.XmlWriter.Create（System.IO.Stream，System.Xml.XmlWriterSettings）＆＃39;无法使用实例引用访问;使用类型名称对其进行限定

public virtual string Serialize()
{
    System.IO.StreamReader streamReader = null;
    System.IO.MemoryStream memoryStream = null;
    try
    {
        memoryStream = new System.IO.MemoryStream();
        System.Xml.XmlWriterSettings xmlWriterSettings = new System.Xml.XmlWriterSettings();
        xmlWriterSettings.Indent = false;
        System.Xml.XmlWriter xmlWriter = xmlWriter.Create(memoryStream, xmlWriterSettings);
        Serializer.Serialize(xmlWriter, this);
        memoryStream.Seek(0, System.IO.SeekOrigin.Begin);
        streamReader = new System.IO.StreamReader(memoryStream);
        return streamReader.ReadToEnd();
     }
     finally
     {
         if ((((streamReader) != null)))
         {
             streamReader.Dispose();
         }
         if ((((memoryStream) != null)))
         {
             memoryStream.Dispose();
         }
     }
}

错误发生在该行：

System.Xml.XmlWriter xmlWriter = xmlWriter.Create(memoryStream, xmlWriterSettings);

在VB.Net中，代码如下：

Public Overridable Function Serialize() As String
    Dim streamReader As System.IO.StreamReader = Nothing
    Dim memoryStream As System.IO.MemoryStream = Nothing
    Try
        memoryStream = New System.IO.MemoryStream()
        Dim xmlWriterSettings As System.Xml.XmlWriterSettings = New System.Xml.XmlWriterSettings()
        xmlWriterSettings.Indent = False
        Dim xmlWriter As System.Xml.XmlWriter = XmlWriter.Create(memoryStream, xmlWriterSettings)
        Serializer.Serialize(xmlWriter, Me)
        memoryStream.Seek(0, System.IO.SeekOrigin.Begin)
        streamReader = New System.IO.StreamReader(memoryStream)
        Return streamReader.ReadToEnd
    Finally
        If (Not (streamReader) Is Nothing) Then
            streamReader.Dispose()
        End If
        If (Not (memoryStream) Is Nothing) Then
            memoryStream.Dispose()
        End If
    End Try
End Function