deleting rows from an excel file using c#

Question

I am opening an excel file like this:

Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
Excel.Range range;

string str;
int rC         


        

Answer 1

Once you have a reference to the worksheet say

for(int i = 1; i <=100; i++)
{
  if(!worksheet.Cells[i,1].Contains("SomeString"))
  {
     ((Range)worksheet.Rows[i]).Delete(shiftDirection)
  }
}

where shiftDirection see here: Range.Delete method

You may have to cast the Cell's content to a string.

Answer 2

 for (int i = dt.Rows.Count - 1; i >= 0; i--)
 {
     if (dt.Rows[i][1].ToString() == "SomeThing")
     {
         dt.Rows.RemoveAt(i);
     }
 }