C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Data;
using System.IO;
using System.Xml;

public class Program
{
	public static void Main()
	{
		string xml = @"<?xml version=""1.0"" encoding=""UTF-8"" standalone=""yes""?>
<DATAPACKET Version=""2.0"">
	<METADATA>
		<FIELDS>
			<FIELD attrname=""CompanyID"" fieldtype=""string"" WIDTH=""10""/>
			<FIELD attrname=""Description"" fieldtype=""string"" WIDTH=""40""/>
		</FIELDS>
		<PARAMS/>
	</METADATA>
	<ROWDATA>
		<ROW CompanyID=""CC"" Description=""Contoso""/>
	</ROWDATA>
</DATAPACKET>
";
		XmlReader reader = XmlReader.Create(new StringReader(xml));
        DataSet dataSet = new DataSet();
		dataSet.ReadXml(reader, XmlReadMode.InferTypedSchema);
		var rowTable = dataSet.Tables["ROW"];
		var newRow = rowTable.NewRow();
		newRow["CompanyID"] = "APPL";
		newRow["Description"] = "Apple";
		rowTable.Rows.Add(newRow);
		Console.WriteLine(dataSet.GetXmlSchema());
	}
}

​x
 
using System;
using System.Data;
using System.IO;
using System.Xml;
​
public class Program
{
    public static void Main()
    {
        string xml = @"<?xml version=""1.0"" encoding=""UTF-8"" standalone=""yes""?>
<DATAPACKET Version=""2.0"">
    <METADATA>
        <FIELDS>
            <FIELD attrname=""CompanyID"" fieldtype=""string"" WIDTH=""10""/>
            <FIELD attrname=""Description"" fieldtype=""string"" WIDTH=""40""/>
        </FIELDS>
        <PARAMS/>
    </METADATA>
    <ROWDATA>
        <ROW CompanyID=""CC"" Description=""Contoso""/>
    </ROWDATA>
</DATAPACKET>
";
        XmlReader reader = XmlReader.Create(new StringReader(xml));
        DataSet dataSet = new DataSet();
        dataSet.ReadXml(reader, XmlReadMode.InferTypedSchema);
        var rowTable = dataSet.Tables["ROW"];
        var newRow = rowTable.NewRow();
        newRow["CompanyID"] = "APPL";
        newRow["Description"] = "Apple";
        rowTable.Rows.Add(newRow);
        Console.WriteLine(dataSet.GetXmlSchema());
    }
}

<?xml version="1.0" encoding="utf-16"?>
<xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
  <xs:element name="DATAPACKET">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="METADATA" minOccurs="0" maxOccurs="unbounded">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="PARAMS" type="xs:string" minOccurs="0" />
              <xs:element name="FIELDS" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element name="FIELD" minOccurs="0" maxOccurs="unbounded">
                      <xs:complexType>
                        <xs:attribute name="attrname" type="xs:string" />
                        <xs:attribute name="fieldtype" type="xs:string" />
                        <xs:attribute name="WIDTH" type="xs:unsignedByte" />
                      </xs:complexType>
                    </xs:element>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element name="ROWDATA" minOccurs="0" maxOccurs="unbounded">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="ROW" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                  <xs:attribute name="CompanyID" type="xs:string" />
                  <xs:attribute name="Description" type="xs:string" />
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="Version" type="xs:decimal" />
    </xs:complexType>
  </xs:element>
  <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element ref="DATAPACKET" />
      </xs:choice>
    </xs:complexType>
  </xs:element>
</xs:schema>

Cached Result
Last Run:	4:51:51 am
Compile:	0.13s
Execute:	0.437s
Memory:	3.93Mb
CPU:	0.422s

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