XmlWriter.WriteValue Method (Int64)
Assembly: System.Xml (in System.Xml.dll)
If WriteValue is called multiple times in succession, the values are not delimited by a space. You must call WriteWhitespace between calls to WriteValue to insert white space. Pass an array type to the XmlWriter.WriteValue(Object) overload to write out an array of distinct values.
If this method is called on an XmlWriter instance that outputs text-only, the typed value is serialized to text.