Access xml files from a directory c#

Question

I have a function that receives an xml file as a parameter.

  public void lerXML(XmlDocument xmlDoc)
    {
        XmlNodeList xnCNPJ = xmlDoc.GetElementsByTagName("emit");
        XmlNodeList xnNFE = xmlDoc.GetElementsByTagName("ide");
        XmlNodeList xnChaveNFE = xmlDoc.GetElementsByTagName("infProt");
        ...
    }

I want to apply this function to all files in a directory

In case, I’m doing so:

 System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo(Diretorio);

            foreach (FileInfo a in dirInfo.GetFiles())
            {
                lerXML(a.FullName);
            }

However, the following error appears:

"Unable to convert from string to System.xml.Xmldocument"

I tried to leave it like this: lerXML(a); but same mistake.

How could I accomplish this conversion?

Answer 1

You need to upload the file since your method expects one XmlDocument... when you do that lerXML(a.FullName), is passing a string and not a representation of the document.

System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo(Diretorio);
foreach (FileInfo a in dirInfo.GetFiles())
{
    var documentoXml = new XmlDocument();
        documentoXml.Load(a.FullName);                

        lerXML(documentoXml);
}