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";
		newRow["ROWDATA_Id"] = 0;
		rowTable.Rows.Add(newRow);
		Console.WriteLine(dataSet.GetXml());
	}
}

​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";
        newRow["ROWDATA_Id"] = 0;
        rowTable.Rows.Add(newRow);
        Console.WriteLine(dataSet.GetXml());
    }
}

Compilation error (line 4, col 7): The type or namespace name 'Json' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 36, col 21): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 51, col 28): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 22, col 26): The name 'JsonSchema' does not exist in the current context
Compilation error (line 36, col 51): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 39, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 40, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 43, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 44, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 51, col 59): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 52, col 15): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 53, col 17): The name 'MetaSchemas' does not exist in the current context
Compilation error (line 56, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 56, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 59, col 30): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 60, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 67, col 32): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 68, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 75, col 31): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 76, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 78, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 79, col 25): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 19): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 38): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)

Last Run:	10:18:09 pm
Compile:	0.007s
Execute:	0s
Memory:	0b
CPU:	0s

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