CODEWITHSUNDEEP
c#.netexcel
Alex Gordon
Alex Gordon

Reputation: 60871

deleting rows from an excel file using c#

I am opening an excel file like this:

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

string str;
int rCnt = 0;
int cCnt = 0;

xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Open("csharp.net-informations.xls", 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

I would like to know:
How do I loop through all the rows and delete every row in which the string SomeString does not appear in column A?

I know how to loop through every value:

for (rCnt = 1; rCnt <= range.Rows.Count; rCnt++)
{
    for (cCnt = 1; cCnt <= range.Columns.Count; cCnt++)
    {
        str = (string)(range.Cells[rCnt, cCnt] as Excel.Range).Value2;
        MessageBox.Show(str);
    }
}

But I do not know how to delete the entire row

Upvotes: 4

Views: 37248

Answers (2)

Ninja
Ninja

Reputation: 348

I know the question has been already answered, but you can try something like below

 for (int i = dt.Rows.Count - 1; i >= 0; i--)
     {
         if (!dt.Rows[i]["column A"].Contains("SomeString "))
         {
             dt.Rows.RemoveAt(i);
         }
     }

Upvotes: -1

Mircea Ion
Mircea Ion

Reputation: 698

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.

Upvotes: 15

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