internal void HandleColumn(XmlElement node, DataTable table)
 {
     DataColumn column;
     Type type;
     string str3;
     string str4;
     int minOccurs = 0;
     int maxOccurs = 1;
     node.GetAttribute("use");
     if (node.Attributes.Count > 0)
     {
         string str7 = node.GetAttribute("ref");
         if ((str7 != null) && (str7.Length > 0))
         {
             return;
         }
         str3 = str4 = this.GetInstanceName(node);
         column = table.Columns[str4, this._schemaUri];
         if (column != null)
         {
             if (column.ColumnMapping == MappingType.Attribute)
             {
                 if (XMLSchema.FEqualIdentity(node, "attribute", "urn:schemas-microsoft-com:xml-data"))
                 {
                     throw ExceptionBuilder.DuplicateDeclaration(str3);
                 }
             }
             else if (XMLSchema.FEqualIdentity(node, "element", "urn:schemas-microsoft-com:xml-data"))
             {
                 throw ExceptionBuilder.DuplicateDeclaration(str3);
             }
             str4 = XMLSchema.GenUniqueColumnName(str3, table);
         }
     }
     else
     {
         str3 = str4 = "";
     }
     XmlElement element = this.FindTypeNode(node);
     SimpleType type2 = null;
     if (element == null)
     {
         throw ExceptionBuilder.UndefinedDatatype(node.GetAttribute("type"));
     }
     string attribute = element.GetAttribute("type", "urn:schemas-microsoft-com:datatypes");
     string dtValues = element.GetAttribute("values", "urn:schemas-microsoft-com:datatypes");
     if ((attribute == null) || (attribute.Length == 0))
     {
         attribute = "";
         type = typeof(string);
     }
     else
     {
         type = this.ParseDataType(attribute, dtValues);
         if (attribute == "float")
         {
             attribute = "";
         }
         if (attribute == "char")
         {
             attribute = "";
             type2 = SimpleType.CreateSimpleType(type);
         }
         if (attribute == "enumeration")
         {
             attribute = "";
             type2 = SimpleType.CreateEnumeratedType(dtValues);
         }
         if (attribute == "bin.base64")
         {
             attribute = "";
             type2 = SimpleType.CreateByteArrayType("base64");
         }
         if (attribute == "bin.hex")
         {
             attribute = "";
             type2 = SimpleType.CreateByteArrayType("hex");
         }
     }
     bool isAttribute = XMLSchema.FEqualIdentity(node, "attribute", "urn:schemas-microsoft-com:xml-data");
     this.GetMinMax(node, isAttribute, ref minOccurs, ref maxOccurs);
     string str2 = null;
     str2 = node.GetAttribute("default");
     bool flag2 = false;
     column = new DataColumn(XmlConvert.DecodeName(str4), type, null, isAttribute ? MappingType.Attribute : MappingType.Element);
     XMLSchema.SetProperties(column, node.Attributes);
     column.XmlDataType = attribute;
     column.SimpleType = type2;
     column.AllowDBNull = (minOccurs == 0) || flag2;
     column.Namespace = isAttribute ? string.Empty : this._schemaUri;
     if (node.Attributes != null)
     {
         for (int i = 0; i < node.Attributes.Count; i++)
         {
             if ((node.Attributes[i].NamespaceURI == "urn:schemas-microsoft-com:xml-msdata") && (node.Attributes[i].LocalName == "Expression"))
             {
                 column.Expression = node.Attributes[i].Value;
                 break;
             }
         }
     }
     string str5 = node.GetAttribute("targetNamespace");
     if ((str5 != null) && (str5.Length > 0))
     {
         column.Namespace = str5;
     }
     table.Columns.Add(column);
     if ((str2 != null) && (str2.Length != 0))
     {
         try
         {
             column.DefaultValue = SqlConvert.ChangeTypeForXML(str2, type);
         }
         catch (FormatException)
         {
             throw ExceptionBuilder.CannotConvert(str2, type.FullName);
         }
     }
     for (XmlNode node2 = node.FirstChild; node2 != null; node2 = node2.NextSibling)
     {
         if (XMLSchema.FEqualIdentity(node2, "description", "urn:schemas-microsoft-com:xml-data"))
         {
             column.Description(((XmlElement) node2).InnerText);
         }
     }
 }
        internal void HandleColumn(XmlElement node, DataTable table)
        {
            DataColumn column;
            Type       type;
            string     str3;
            string     str4;
            int        minOccurs = 0;
            int        maxOccurs = 1;

            node.GetAttribute("use");
            if (node.Attributes.Count > 0)
            {
                string str7 = node.GetAttribute("ref");
                if ((str7 != null) && (str7.Length > 0))
                {
                    return;
                }
                str3   = str4 = this.GetInstanceName(node);
                column = table.Columns[str4, this._schemaUri];
                if (column != null)
                {
                    if (column.ColumnMapping == MappingType.Attribute)
                    {
                        if (XMLSchema.FEqualIdentity(node, "attribute", "urn:schemas-microsoft-com:xml-data"))
                        {
                            throw ExceptionBuilder.DuplicateDeclaration(str3);
                        }
                    }
                    else if (XMLSchema.FEqualIdentity(node, "element", "urn:schemas-microsoft-com:xml-data"))
                    {
                        throw ExceptionBuilder.DuplicateDeclaration(str3);
                    }
                    str4 = XMLSchema.GenUniqueColumnName(str3, table);
                }
            }
            else
            {
                str3 = str4 = "";
            }
            XmlElement element = this.FindTypeNode(node);
            SimpleType type2   = null;

            if (element == null)
            {
                throw ExceptionBuilder.UndefinedDatatype(node.GetAttribute("type"));
            }
            string attribute = element.GetAttribute("type", "urn:schemas-microsoft-com:datatypes");
            string dtValues  = element.GetAttribute("values", "urn:schemas-microsoft-com:datatypes");

            if ((attribute == null) || (attribute.Length == 0))
            {
                attribute = "";
                type      = typeof(string);
            }
            else
            {
                type = this.ParseDataType(attribute, dtValues);
                if (attribute == "float")
                {
                    attribute = "";
                }
                if (attribute == "char")
                {
                    attribute = "";
                    type2     = SimpleType.CreateSimpleType(type);
                }
                if (attribute == "enumeration")
                {
                    attribute = "";
                    type2     = SimpleType.CreateEnumeratedType(dtValues);
                }
                if (attribute == "bin.base64")
                {
                    attribute = "";
                    type2     = SimpleType.CreateByteArrayType("base64");
                }
                if (attribute == "bin.hex")
                {
                    attribute = "";
                    type2     = SimpleType.CreateByteArrayType("hex");
                }
            }
            bool isAttribute = XMLSchema.FEqualIdentity(node, "attribute", "urn:schemas-microsoft-com:xml-data");

            this.GetMinMax(node, isAttribute, ref minOccurs, ref maxOccurs);
            string str2 = null;

            str2 = node.GetAttribute("default");
            bool flag2 = false;

            column = new DataColumn(XmlConvert.DecodeName(str4), type, null, isAttribute ? MappingType.Attribute : MappingType.Element);
            XMLSchema.SetProperties(column, node.Attributes);
            column.XmlDataType = attribute;
            column.SimpleType  = type2;
            column.AllowDBNull = (minOccurs == 0) || flag2;
            column.Namespace   = isAttribute ? string.Empty : this._schemaUri;
            if (node.Attributes != null)
            {
                for (int i = 0; i < node.Attributes.Count; i++)
                {
                    if ((node.Attributes[i].NamespaceURI == "urn:schemas-microsoft-com:xml-msdata") && (node.Attributes[i].LocalName == "Expression"))
                    {
                        column.Expression = node.Attributes[i].Value;
                        break;
                    }
                }
            }
            string str5 = node.GetAttribute("targetNamespace");

            if ((str5 != null) && (str5.Length > 0))
            {
                column.Namespace = str5;
            }
            table.Columns.Add(column);
            if ((str2 != null) && (str2.Length != 0))
            {
                try
                {
                    column.DefaultValue = SqlConvert.ChangeTypeForXML(str2, type);
                }
                catch (FormatException)
                {
                    throw ExceptionBuilder.CannotConvert(str2, type.FullName);
                }
            }
            for (XmlNode node2 = node.FirstChild; node2 != null; node2 = node2.NextSibling)
            {
                if (XMLSchema.FEqualIdentity(node2, "description", "urn:schemas-microsoft-com:xml-data"))
                {
                    column.Description(((XmlElement)node2).InnerText);
                }
            }
        }