XML XSD in c# Null operators
I have some code that a previous employee did using XSD to create an XML read.
(1) Where can I find sample XSD for Microsoft details as a user manual with examples.
(2) I have a simple sample to solve with null values. Works okay when not null but fails when it reads XML file with null values.
I have not compiled this code but cut bits and pieces from the complex original.
(3) the file is two jars one glass jar with a lid and the other a red tin base with no lid.
I have an XML that looks like this
<?xml version="1.0" encoding="utf-8"?>
<Collection xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<jar>
<jarBase>
<material>glass</material>
</jarBase>
<lid>
<lidmaterial>tin</lidmaterial>
<colour>red</colour>
<lid>
</jar>
<jar>
<jarBase>
<material>tinny</material>
</jarBase>
<lid xsi:nil="true">
<jar>
this file may not parse okay in an XMl reader.
Now I am having trouble getting the null for lids to work
// typical xsd output using ADAC namespace ADAC is public engineers data base definition as an XSD.
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd","4.0.30319.1")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true, Namespace="http://www.adac.com.au")]
publicpartialclassjarBase{
privatestring materialField;
publicstringMaterial
{
get{
returnthis.materialField;
}
set{
this.materialField =value;
}
}
// this definition seems okay for jarBase
//
publicpartialclasslid{
privatestring lidMaterialField;
privatestring colourField;
publicstringMaterial
{
get{
returnthis.lidMaterialField;
}
set{
this.lidMaterialField =value;
}
publicstringColour
{
get{
returnthis.colourField;
}
set{
this.colourField =value;
}
}
// this is the main routine
//
///<remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd","4.0.30319.1")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true, Namespace="http://www.adac.com.au")]
public partial class jar {
// alternative tried code like this
privateSystem.Nullable<jarBase> jarBaseField;
privatejarBase jarBaseField;
privatelid lidField;
publicjarBase JarBase
{
get{
returnthis.jarBaseField;
}
set{
this.jarBaseField =value;
}
publiclid Lid
{
get{
returnthis.lidField;
}
set{
this.lidField =value;
}
}
I need to get the nullable options to work okay on a struct. or a class. currently using Visual Studio 2010 with the old AutoCAD versions. My current version writes out the XML file with the xsi:null="true" okay but the readin fails as it tries to put the elemnt into a null pointer for the lid.
Any help welcomed....
john Keays
John Keays