Add XmlElement to XmlElement [] dynamically

I want to add XmlElement to XmlElement[] array dynamically.

Am trying like this below.But in case of multiple Elements not sure how to add..

Need to create multiple XmlElement based on criteria and add to this Array

Please help me out

        var xmlDoc = new XmlDocument();
        var xelement = xmlDoc.CreateElement("DocId");
        xelement.InnerText = "Test";

        var xelemArray = new XmlElement[]
        {
            xelement
        };