XmlDocument - End tag moved to next line

I use XmlDocument to load and save the XML document...

While i save the document end tag of elements with blank value is moved to next line..

i.e.

Code:

<root> <element1>some text</element1> <element2>123566</element2> <element3></element3> <element4></element4> </root>

when above document is loaded and saved back, it looks like below

Code:

<root> <element1>some text</element1> <element2>123566</element2> <element3> </element3> <element4> </element4> </root>

(End tags of element3 and elemtn4 are moved to next line)

This causes error in my schema as element3 and element4 has invalid character(in schema we have defined, it must have valid value, blank space is invalid)

XML file is generated via code so - i can’t change <element4></element4> to <element4/> to avoid above problem...

Please can help me how to handle this..

Cheers
Venu