DataTable to XML (datatable having another datatable as column)

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I am trying to write a data table to xml and again reading it back to my application.

This is the structure of my DataTable ---> Note : It is having a column of DataTable type.

 DataTable _clsdatatable = new DataTable();            
_clsdatatable.Columns.Add("WIZARDID", typeof(int));
_clsdatatable.Columns.Add("WIZARD_NAME", typeof(string));
_clsdatatable.Columns.Add("WIZARD_TYPE", typeof(string));
_clsdatatable.Columns.Add("CREATE_DATE", typeof(DateTime));
_clsdatatable.Columns.Add("UPDATE_DATE", typeof(DateTime));
_clsdatatable.Columns.Add("USERID", typeof(short));
_clsdatatable.Columns.Add("WIZARD_DATA", typeof(DataTable));

Now if I try to export this data table to XML, I am getting a complex xml with so many diffgram data and schema details.

Now if I try to read the xml it is giving me error as

Column 'WIZARDID' does not belong to table Wizard.

If there is no data table present in the parent data table then it is working fine both > write and read case. So seems like the problem is with writing XML process while Data table is present inside data table.

Please let me know if anybody can help me with this --- Is there any way to attach the xml file with the post --- then it would be helpful for you gyus.

Posted 29-May-13 0:43am

sambit85

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tumbledDown2earth 29-May-13 7:41am

Did you gove the table a name "Wizard"? It is not reflecting in the code above

2 solutions

Solution 1

C#

 // By using this method we can convert datatable to xml
public string ConvertDatatableToXML(DataTable dt)
{
MemoryStream str = new MemoryStream();
dt.WriteXml(str, true);
str.Seek(0, SeekOrigin.Begin);
StreamReader sr = new StreamReader(str);
string xmlstr;
xmlstr = sr.ReadToEnd();
return (xmlstr);
}

Posted 29-May-13 2:51am

JitendraSahu

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sambit85 · Accepted Answer · 2013-05-29T22:27:00

I have solved this ---

The trick was not to use WriteXMl() method for datatabel -> xml.
Instead i used loadxml() and then when I tried to read that xml by ReadXML() method it worked fine.

Also the same can be possible with binary serialization.

--- Any way thanks for your comments.