Array in XML

Hi,

I want to create a typed dataset to keep my data model in a c# application. The data shall be stored in a XML file like this:

Code:

---

<data>
  <item1 attr="1">
    <item2>1</item2>
    <item2>2</item2>
    <item2>3</item2>
    <item2>4</item2>
  </item1>
 
  <item1 attr="2">
    <item2>5</item2>
    <item2>6</item2>
    <item2>7</item2>
    <item2>8</item2>
  </item1>
</data>

---

After having created a scheme with xsd I expected to access the members of the dataset as stated below:

Code:

---

  test = ds.item1[1].item2[3];

---

However xsd does not build item2 as a child of item1. Instead my expectation item2 is accessible by

Code:

---

  test = ds.item2[7];

---

Hence, there is no information about item1 (e.g. attribute, other elements, etc.) linked to item2.

Is there anyone who knows how to create an array member that is in scope of another array?

Thanks in advance,
gbr

test = ds.item1[1].item2[3];

this means u want a table item 1 with a field item 2 ? but in your xml you need more than one field item 2 , so u can not put them in the same table ;)

u need something like this:

a table item1, with attr
and a table item 2
with a relation between them one to many

grtz

I am not sure if I understand your suggestion. Could you please provide a XML sample or a snippet of code?

Thanks.

this will not entirely solve you problem, because i don't have the time to test it out and such, i just made you a short xsd file, so you can understand what i mean:

<?xml version="1.0" encoding="utf-8" ?>
<xs:schema id="Dataset1" targetNamespace="http://tempuri.org/Dataset1.xsd" elementFormDefault="qualified"
attributeFormDefault="qualified" xmlns="http://tempuri.org/Dataset1.xsd" xmlns:mstns="http://tempuri.org/Dataset1.xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="Dataset1" msdata:IsDataSet="true">
<xs:complexType>
<xs:choice maxOccurs="unbounded">
<xs:element name="Item1">
<xs:complexType>
<xs:sequence>
<xs:element name="id" type="xs:string" minOccurs="0" />
</xs:sequence>
<xs:attribute name="attr" type="xs:string" />
</xs:complexType>
</xs:element>
<xs:element name="Item2">
<xs:complexType>
<xs:sequence>
<xs:element name="id" type="xs:string" minOccurs="0" />
<xs:element name="Value" type="xs:string" minOccurs="0" />
<xs:element name="item1Id" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
<xs:key name="Dataset1Key1">
<xs:selector xpath=".//mstns:Item1" />
<xs:field xpath="mstns:id" />
</xs:key>
<xs:keyref name="Item1Item2" refer="Dataset1Key1" msdata:ConstraintOnly="true">
<xs:selector xpath=".//mstns:Item2" />
<xs:field xpath="mstns:item1Id" />
</xs:keyref>
<xs:key name="Dataset1Key2">
<xs:selector xpath=".//mstns:Item2" />
<xs:field xpath="mstns:id" />
</xs:key>
</xs:element>
</xs:schema>



to browse your dataset, to it like this:

TypedDataset1 s = new TypedDataset1 ();
foreach(DataRow row in s.Item1[0].GetChildRows(s.Relations[0]))
{
TypedDataset1 .Item2Row item2row = (TypedDataset1 .Item2Row)row;
string s = item2row.Value;
}

i you work with my example, you will have to change your input xml,if you can't change your incoming xml file, than you will have to modify the xsd ;)

Hi ,

Try using of attributes to indicate the array index values.Like


<root>
<item>
<it id="1">sample</it>
<it id="2">sample2</it>
</item>
</root>

Quote:

---

Try using of attributes to indicate the array index values.Like

---

That does not work either since it does not create a typed dataset I can access through
test = ds.item1[1].item2[3];