Determine if a XmlNode is empty or null in C#?

The following code takes an XmlNode data type an开发者_如何学Cd populates a DataSet object with the XmlNode content. Then I write the dataset's content to file.

public void PopulateDataSet(XmlNode node)
{
    XmlNodeReader reader = new XmlNodeReader(node);
    DataSet ds = new DataSet();
    ds.ReadXml(reader);

    system.Guid guid = System.Guid.NewGuid();
    string name = string.Format("{0}{1}_{2}.xml", Utility.XmlOutputPath, Utility.XmlOutputFileName, guid.ToString());

    //need to write "Node empty" to file if XmlNode object is empty of null
    ds.WriteXml(name, XmlWriteMode.IgnoreSchema);
}

The problem is that I encountered one scenario that it will not write the content to file. How do I determine if a XmlNode object is null or empty?

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You can check if the node parameter is null or has InnerText or InnerXml properties are null or empty, immediately when you enter the method before even creating the XmlNodeReader.

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Use XmlElement instead for get if the node is empty.

XmlElement currNode = (XmlElement) doc.DocumentElement.LastChild;
if (currNode.IsEmpty)
{
    ...
}