Sunday, March 27, 2011

Validate XML aganist an XSD in Asp.Net C#

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Most of the times when we are working with XML we need to validate the XML file from an XSD file. Here i am showing an code example how one can validate XML file using an XSD in Asp.Net C#.

To do that add an aspx page in your project.

Now under Page_Load event write the below code:
using System;
using System.Xml;
using System.Text;
using System.Xml.Schema;

public partial class Validate_XML_XSD : System.Web.UI.Page
    private StringBuilder sB = new StringBuilder();
    protected void Page_Load(object sender, EventArgs e)
        if (!IsPostBack)
            string xmlPath = MapPath("MenuXML.xml");
            string xsdPath = MapPath("MenuXML.xsd");

            XmlReaderSettings settings = new XmlReaderSettings();
            settings.ValidationType = ValidationType.Schema;
            settings.Schemas.Add(null, XmlReader.Create(xsdPath));

            XmlReader Oreader = XmlReader.Create(xmlPath, settings);
            XmlDocument Odoc = new XmlDocument();
            ValidationEventHandler eventHandler = new ValidationEventHandler(ValidationEventHandler);

            if (sB.ToString() == String.Empty)
                Response.Write("Validation completed successfully.");
                Response.Write("Validation Failed: " + sB.ToString());

    public void ValidationEventHandler(object sender, ValidationEventArgs args)
        sB.Append("Error: " + args.Message);

Hope now you can validate XML file easily.


Rob de Jonge said...

I get an error when I run your code
I copied and pasted it:
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1513: } expected

Source Error:

Line 4: using System.Xml;
Line 5: using System.Text;
Line 6: using System.Xml.Schema;
Line 7:
Line 8: public partial class Validate_XML_XSD : System.Web.UI.Page

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