How to split the rows in Table if it is vertically merged.

How to split the rows in Table if it is vertically merged cells.

I am getting error like this "Cannot access individual rows in this collection because the table has vertically merged cells. word"

here is my code

Range rHeaderRows = default(Range);

int i = 0;

if (cbxRepeate.Checked == true)

{

nRowHeaders = wordsec.Range.Rows.First.Index - 1;

if (nRowHeaders >= Numdropdown.Value)

{

if (wordsec.Range.Rows.First.Index > nRowHeaders)

{

rHeaderRows = wordsec.Tables[1].Rows[1].Range;

rHeaderRows.End = wordsec.Tables[1].Rows[(int)Numdropdown.Value].Range.End;

}

wordsec.SplitTable();

wordsec.TypeText("\n");

wordsec.MoveRight(WdUnits.wdCharacter, 1);

if (nRowHeaders > 0)

{

rHeaderRows.Copy();

wordsec.Paste();

//for (i = 1; i <= nRowHeaders; i++)

//{

// wordsec.Tables[1].Rows[i].HeadingFormat = -1;

//}

}

wordsec.Tables[1].Select();

wordsec.MoveLeft(WdUnits.wdCharacter, 2);

wordsec.Font.Bold = 1;

wordsec.Fields.Add(wordsec.Range, WdFieldType.wdFieldEmpty, "STYLEREF Table", true);

wordsec.TypeText(" " + "(continued)");

wordsec.Paragraphs.set_Style("TableCont");

}

else

{

MessageBox.Show("You have selected invalid row", "ARID - Split Table", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

Please tell me how to resolve this issue.