How to read an XML file after an Angular upload?

Question

I am working with uploading XML in Angular 4. I would need to read the contents of this file and turn into a string.

Could someone help me ?

HTML

<input id="uploadXml" type="file"
 #uploadXml
 accept='text/xml'
 (change)="handleXmlFile(uploadXml)">
 

Javascript

handleXmlFile(_uploadXml){
   this.file = _uploadXml.files[0]; 
}