I would like to know each MS word Page end using open SDK XML concept in asp.net c#
In our testing we've found that although the lastRenderedPageBreak element is useful to give some idea of the page breaks, they certainly aren't 100% reliable and there are several other cases in addition to yours where this element appears in the wrong place or is missing completely.
For instance, sometimes we can get a lastRenderedPageBreak on the paragraph before or after one containing a hard page break; or if we have a table that goes over two pages, you get a lastRenderedPageBreak in each column of the table but not all in the correct row; and if the document contains large images or a long sequence of blank lines, sometimes the lastRenderedPageBreaks are missing from around that area