Save List to XML file

Question

I want to save records fetched from database in an XML file,
take x number of records from XML file into a custom collection List
process them and

Answer 1

List choiceSet = new List();
        choiceSet = biEntityObj.ChoiceSet;

        XmlDocument ChoiceXML = new XmlDocument();
        ChoiceXML.AppendChild(ChoiceXML.CreateElement("CHOICESET"));
        foreach (var item in choiceSet)
        {
            XmlElement element = ChoiceXML.CreateElement("CHOICE");
           // element.AppendChild(ChoiceXML.CreateElement("CHOICE_ID")).InnerText = Convert.ToString(item.ChoiceID);
            element.AppendChild(ChoiceXML.CreateElement("CHOICE_TEXT")).InnerText = Convert.ToString(item.ChoiceText);
            element.AppendChild(ChoiceXML.CreateElement("SEQUENCE")).InnerText = Convert.ToString(item.Sequence);
            element.AppendChild(ChoiceXML.CreateElement("ISCORRECT")).InnerText = Convert.ToString(item.IsCorrect);
            ChoiceXML.DocumentElement.AppendChild(element);
        }

Pass ChoiceXML to Stored procedure then SQL Server Do like as below

@Choice_XML VARCHAR(MAX)=NULL

 IF(@Choice_XML<>'')  
                BEGIN  
                    SET @intDocHandle =0
                    --Create an internal representation of the XML document.  
                    EXEC sp_xml_preparedocument @intDocHandle OUTPUT, 

@Choice_XML  

                --SET @ChoiceID = (SELECT  max([choice_id])+1 AS 'ChoiceID'  from BI_QUESTION_CHOICE)

                --Insert 
                INSERT BI_QUESTION_CHOICE
                (
                    [choice_id],
                    [choice_descr],
                    [sequence],
                    [question_id],
                    [is_correct],
                    [created_by],
                    [created_dt],
                    [modified_by],
                    [modified_dt]
                )
                SELECT (SELECT  max([choice_id])+1 AS 'ChoiceID'  from BI_QUESTION_CHOICE),  
                    CASE WHEN CHOICE_TEXT='' THEN NULL ELSE CHOICE_TEXT END, 
                    CASE WHEN SEQUENCE='' THEN NULL ELSE SEQUENCE END,
                    QuestionID, 
                    CASE WHEN ISCORRECT='' THEN NULL ELSE ISCORRECT END,
                    'mbathini',  
                     GETDATE(),  
                    'mbathini', 
                    GETDATE()  
                FROM OPENXML(@intDocHandle,'/CHOICESET/CHOICE', 3)  
                WITH  
                (CHOICE_TEXT VARCHAR(500), 
                 SEQUENCE VARCHAR(50),
                 QuestionID INT,
                 ISCORRECT bit)

END