public void MergeCells(int startIndex, int endIndex)
{
if (startIndex >= endIndex)
{
throw new ArgumentOutOfRangeException("Start index must be smaller than end index");
}
if (startIndex < 0 || endIndex >= this.tableCells.Count)
{
throw new ArgumentOutOfRangeException("Invalid start index and end index");
}
XWPFTableCell startCell = this.GetCell(startIndex);
//remove merged cells
for (int i = endIndex; i > startIndex; i--)
{
this.RemoveCell(i);
}
if (!startCell.GetCTTc().IsSetTcPr())
{
startCell.GetCTTc().AddNewTcPr();
}
CT_TcPr tcPr = startCell.GetCTTc().tcPr;
if (tcPr.gridSpan == null)
{
tcPr.AddNewGridspan();
}
CT_DecimalNumber gridspan = tcPr.gridSpan;
gridspan.val = (endIndex - startIndex + 1).ToString();
}
