在使用xml进行对象与字符串序列化与反序列化时，遇到如下问题：
代码
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.1432")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition", IsNullable = false)]
public partial class Report : IReport
{
private object[] itemsField;
private ReportItemsElementNameType[] itemsElementNameField;
private System.Xml.XmlAttribute[] anyAttrField;
/// <remarks/>
[System.Xml.Serialization.XmlAnyElementAttribute()]
[System.Xml.Serialization.XmlElementAttribute("Author", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("AutoRefresh", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("Classes", typeof(ClassesType))]
[System.Xml.Serialization.XmlElementAttribute("Code", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("CodeModules", typeof(CodeModulesType))]
[System.Xml.Serialization.XmlElementAttribute("ConsumeContainerWhitespace", typeof(bool))]
[System.Xml.Serialization.XmlElementAttribute("CustomProperties", typeof(CustomPropertiesType))]
[System.Xml.Serialization.XmlElementAttribute("DataElementName", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("DataElementStyle", typeof(ReportDataElementStyle))]
[System.Xml.Serialization.XmlElementAttribute("DataSchema", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("DataSets", typeof(DataSetsType))]
[System.Xml.Serialization.XmlElementAttribute("DataSources", typeof(DataSourcesType))]
[System.Xml.Serialization.XmlElementAttribute("DataTransform", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("DeferVariableEvaluation", typeof(bool))]
[System.Xml.Serialization.XmlElementAttribute("Description", typeof(StringLocIDType))]
[System.Xml.Serialization.XmlElementAttribute("EmbeddedImages", typeof(EmbeddedImagesType))]
[System.Xml.Serialization.XmlElementAttribute("InitialPageName", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("Language", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("ReportParameters", typeof(ReportParametersType))]
[System.Xml.Serialization.XmlElementAttribute("ReportSections", typeof(ReportSectionsType))]
[System.Xml.Serialization.XmlElementAttribute("Variables", typeof(VariablesType))]
[System.Xml.Serialization.XmlChoiceIdentifierAttribute("ItemsElementName")]
public object[] Items
{
get
{
return this.itemsField;
}
set
{
this.itemsField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute("ItemsElementName")]
[System.Xml.Serialization.XmlIgnoreAttribute()]
public ReportItemsElementNameType[] ItemsElementName
{
get
{
return this.itemsElementNameField;
}
set
{
this.itemsElementNameField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAnyAttributeAttribute()]
public System.Xml.XmlAttribute[] AnyAttr
{
get
{
return this.anyAttrField;
}
set
{
this.anyAttrField = value;
}
}
}
Report类有XmlRootAttribute和XmlTypeAttribute这2个特性，而另一个类MapPolygonLayerType则只有XmlTypeAttribute
一个特性，如下所示：
代码
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.1432")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition")]
public partial class MapPolygonLayerType : IMapPolygonLayerType
{
private object[] itemsField;
private MapPolygonLayerTypeItemsElementNameType[] itemsElementNameField;
private string nameField;
private System.Xml.XmlAttribute[] anyAttrField;
/// <remarks/>
[System.Xml.Serialization.XmlAnyElementAttribute()]
[System.Xml.Serialization.XmlElementAttribute("DataElementName", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("DataElementOutput", typeof(MapPolygonLayerTypeDataElementOutput))]
[System.Xml.Serialization.XmlElementAttribute("MapBindingFieldPairs", typeof(MapBindingFieldPairsType))]
[System.Xml.Serialization.XmlElementAttribute("MapCenterPointRules", typeof(MapPointRulesType))]
[System.Xml.Serialization.XmlElementAttribute("MapDataRegionName", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("MapFieldDefinitions", typeof(MapFieldDefinitionsType))]
[System.Xml.Serialization.XmlElementAttribute("MapMarkerTemplate", typeof(MapMarkerTemplateType))]
[System.Xml.Serialization.XmlElementAttribute("MapPolygonRules", typeof(MapPolygonRulesType))]
[System.Xml.Serialization.XmlElementAttribute("MapPolygonTemplate", typeof(MapPolygonTemplateType))]
[System.Xml.Serialization.XmlElementAttribute("MapPolygons", typeof(MapPolygonsType))]
[System.Xml.Serialization.XmlElementAttribute("MapShapefile", typeof(MapShapefileType))]
[System.Xml.Serialization.XmlElementAttribute("MapSpatialDataRegion", typeof(MapSpatialDataRegionType))]
[System.Xml.Serialization.XmlElementAttribute("MapSpatialDataSet", typeof(MapSpatialDataSetType))]
[System.Xml.Serialization.XmlElementAttribute("MaximumZoom", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("MinimumZoom", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("Transparency", typeof(string))]
[System.Xml.Serialization.XmlElementAttribute("VisibilityMode", typeof(string))]
[System.Xml.Serialization.XmlChoiceIdentifierAttribute("ItemsElementName")]
public object[] Items
{
get
{
return this.itemsField;
}
set
{
this.itemsField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute("ItemsElementName")]
[System.Xml.Serialization.XmlIgnoreAttribute()]
public MapPolygonLayerTypeItemsElementNameType[] ItemsElementName
{
get
{
return this.itemsElementNameField;
}
set
{
this.itemsElementNameField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute(DataType = "normalizedString")]
public string Name
{
get
{
return this.nameField;
}
set
{
this.nameField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAnyAttributeAttribute()]
public System.Xml.XmlAttribute[] AnyAttr
{
get
{
return this.anyAttrField;
}
set
{
this.anyAttrField = value;
}
}
}
我们对其序列化和反序列化：
代码
string mapline = SimpleLoadXml(@"..\..\..\MapLineRules.xml");
Report ret2 = (Report)DeSerialize(Encoding.UTF8.GetBytes(mapline), typeof(Report));
string ret2str = SerializeToStr(ret2);
string mapPolygonLayerstr =
"<MapPolygonLayerType Name=\"Name025c5c62b72241e79fc7f18b00978e4a\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">" +
"<MapCenterPointRules xmlns=\"http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition\">" +
"<MapMarkerRule>" +
"<MapMarkers>" +
"<MapMarker />" +
"</MapMarkers>" +
"</MapMarkerRule>" +
"</MapCenterPointRules>" +
"</MapPolygonLayerType>";
object mapPolygonLayerobj = DeSerialize(mapPolygonLayerstr, typeof(MapPolygonLayerType));
string mapPolygonLayerstr2=
"<MapPolygonLayerType Name=\"Name025c5c62b72241e79fc7f18b00978e4a\">" +
"<MapCenterPointRules>" +
"<MapMarkerRule>" +
"<MapMarkers>" +
"<MapMarker />" +
"</MapMarkers>" +
"</MapMarkerRule>" +
"</MapCenterPointRules>" +
"</MapPolygonLayerType>";
object mapPolygonLayerobj2 = DeSerialize(mapPolygonLayerstr2, typeof(MapPolygonLayerType));
ret2的结构为：
mapPolygonLayerobj的结构为：
mapPolygonLayerobj2的结构为：
可见mapPolygonLayerobj与ret2中的MapPolygonLayer结构一致，而mapPolygonLayerobj2的结构则不相同。
原因在于mapPolygonLayerstr比mapPolygonLayerstr2多了xmlns:xsi, xmlns:xsd,xmlns这3个属性（注意属性
所在的位置。
总上，XmlRootAttribute与XmlTypeAttribute差别不大。