I'm new to XMLdeserialization. I used xsd.exe to generate object classes for performing a deserialization on an existing XML file. When I run my solution below, I get the error

> 
> System.InvalidOperationException: < xmlns=''> was not expected
> 
> 
> 

on the `s = (NewDataSet)xs.Deserialize(sr)` call. I looked this error up on Stack Overflow, and everyone says it's in the `XMLRootAttribute` line.

```
[System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]

```

How can I correct this line? Or where can I find some documentation that explains how to correct it?

Also, why doesn't xsd.exe generate the correct `XmlRootAttribute` line in the first place? Am I invoking this utility wrong? Or are there some situations the xsd.exe utility can't handle?

```
public class Program
{
    static void Main(string[] args)
    {
        SortedSet<string> symbolsEstablished = new SortedSet<string>();

        GetXmlDataSet("Expt 2buy.xml", ref symbolsEstablished);
    }

    public static void GetXmlDataSet(string fileName, ref SortedSet<string> symbols)
    {
        XmlSerializer xs = new XmlSerializer(typeof(NewDataSet));
        StreamReader sr = new StreamReader(@"C:\Users\mehl\AppData\Roaming\Fidelity Investments\WealthLabPro\1.0.0.0\Data\DataSets\" + fileName);
        NewDataSet s = (NewDataSet)xs.Deserialize(sr);
        Console.WriteLine(s.Items[0].DSString);
        sr.Close();
    }

    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.3038")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
    [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
    public partial class DataSet
    {
        private string nameField;
        private string scaleField;
        private string barIntervalField;
        private string dSStringField;
        private string providerNameField;

        [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
        public string Name
        {
            get { return this.nameField; }
            set { this.nameField = value; }
        }

        [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
        public string Scale
        {
            get { return this.scaleField; }
            set { this.scaleField = value; }
        }

        [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
        public string BarInterval
        {
            get { return this.barIntervalField; }
            set { this.barIntervalField = value; }
        }

        [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
        public string DSString
        {
            get { return this.dSStringField; }
            set { this.dSStringField = value; }
        }

        [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
        public string ProviderName
        {
            get { return this.providerNameField; }
            set { this.providerNameField = value; }
        }
    }

    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.3038")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
    [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
    public partial class NewDataSet
    {
        private DataSet[] itemsField;

        [System.Xml.Serialization.XmlElementAttribute("DataSet")]
        public DataSet[] Items
        {
            get { return this.itemsField; }
            set { this.itemsField = value; }
        }
    }
}

```

The entire above code segment is wrapped in a screener2wl namespace.

And here's the XML file I'm trying to deserialize:

```xml
<?xml version="1.0"?>
<DataSet xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Name>Expt 2buy</Name>
  <Scale>Daily</Scale>
  <BarInterval>0</BarInterval>
  <DSString>AAL,AFSI,BEN,BIG,BLKB,CDK,COHR,CRUS,EGP,EPE,ETH,FB,HUM,LSTR,MDP,MSI,NYT,TAST,TER,TSO,TXN,UTHR,VASC,VLO,WRI,</DSString>
  <ProviderName>FidelityStaticProvider</ProviderName>
</DataSet>

```