http://www.stylusstudio.com/xsllist/200108/post40210.html
http://msdn.microsoft.com/en-us/library/ms757047(VS.85).aspx
http://www.eggheadcafe.com/software/aspnet/29965929/how-can-i-prevent-appendc.aspx
http://objectmix.com/xml-soap/87320-how-can-i-prevent-appendchild-adding-xmlns-attribute.html
使用 xmlTextbox_11.SetAttribute("xmlns", "name space") ' name space 与XML 文档的一致
Dim xmlTextbox_12 As XmlElement = sourceDoc.CreateElement("Textbox")
xmlTextbox_12.SetAttribute("Name", "textbox_xxxValue")
xmlTextbox_12.SetAttribute("xmlns", "http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition")