Calling a Stored Procedure with XML Datatype

Question

I am simply trying to call a store procedure (SQL Server 2008) using C# and passing XMLDocument to a store procedure parameter that takes a SqlDbType.Xml data type. I am ge

Answer 1

To do this with an XDocument, XElement or other XNode, try the following:

XDocument doc = new XDocument(
    new XElement("Person", 
        new XAttribute("Name", "John")));
cmd.Parameters.Add("@FileContent", SqlDbType.Xml);
cmd.Parameters["@FileContent"].Value = new SqlXml(doc.CreateReader());

Answer 2

Other way to do it if you don't mind loosing the xml declaration (version and encoding) is just:

XML.DocumentElement.OuterXml 'where XML is a XMLDocument

Answer 3

you can create a XML string using following code

var doc = new XDocument();
doc.Add(new XElement("x", input.Select(x => new XElement("v", x))));
return doc.ToString();

and then pass this doc string to stored procedure as a parameter

Answer 4

You need to pass the xml as a string.

But if you don't need the xml functions in the database, you might consider using varbinary to store the files.

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UPDATE!!!!!

Thanks. I got it to work. Added the following coded:

StringWriter sw = new StringWriter(); 
XmlTextWriter xw = new XmlTextWriter(sw); 
doc.WriteTo(xw); 
StringReader transactionXml = new StringReader(sw.ToString()); 
XmlTextReader xmlReader = new XmlTextReader(transactionXml); 
SqlXml sqlXml = new SqlXml(xmlReader); 

Converting it to a string was not enough. I got the following error: XML parsing: line 1, character 38, unable to switch the encoding”. So, I converted to string then coverted it to SqlXml and it worked.

Answer 5

Another simpler way is to write the xmldoc to a string and pass that to the stored procedure.

Dim sb As New StringBuilder()
Dim wrtr As New System.IO.StringWriter(sb)
doc.Save(wrtr)
Dim strxml As String = sb.ToString()
cmd.Parameters.Add("@FileContent", SqlDbType.Xml);
cmd.Parameters["@FileContent"].Value =strxml;

Answer 6

public static string SerializeToXml(T obj)
{
    XmlSerializerNamespaces ns = new XmlSerializerNamespaces();

    ns.Add("","");

    StringWriter Output = new StringWriter(new StringBuilder());
    XmlSerializer ser = new XmlSerializer(obj.GetType);
    ser.Serialize(Output, obj, ns);

    return Output.ToString();
}