Cannot convert type int to microsoft.office.interop.excel.range

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Hi All,

I am trying to count the no. of rows in the used range of an excel sheet

My code is as follow

int lastrow1;
string path = textBox1.Text;
                    string path1 = textBox2.Text;
                    string Filename = path.Substring(path.LastIndexOf('\\') + 1);
                    string Filename1 = path1.Substring(path.LastIndexOf('\\') + 1);
                    Microsoft.Office.Interop.Excel.Application ExcelObj = new Microsoft.Office.Interop.Excel.Application();
                    Microsoft.Office.Interop.Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open(path, 0, true,6, "", "",false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "|", true, false, 0, true, false, false);
                    Microsoft.Office.Interop.Excel.Sheets sheets = theWorkbook.Worksheets;
                    Microsoft.Office.Interop.Excel.Worksheet workSheet = (Microsoft.Office.Interop.Excel.Worksheet)sheets.get_Item(1);
                    lastrow1 = (Microsoft.Office.Interop.Excel.Range)workSheet.UsedRange.Rows.Count;

At this point i get an error.
"Cannot convert type int to microsoft.office.interop.excel.range"

Please help

Posted 20-Apr-11 19:56pm

Eager2Lern

Updated 20-Apr-11 20:47pm

Toniyo Jackson

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Wayne Gaylard · Answer 1 · 2011-04-20T20:59:00

Solution 2

You declare lastRow1 to be an int, and then you try to explicitly cast it to a Excel Range

C#

lastrow1 = (Microsoft.Office.Interop.Excel.Range)workSheet.UsedRange.Rows.Count;

Surely you can see the error here. The error is telling you exactly what is wrong. Seriously - read the error.

Posted 20-Apr-11 20:59pm

Wayne Gaylard

Tarun.K.S · Answer 2 · 2011-04-20T21:16:00

Solution 3

There is no need to cast it to type Range. Remove the cast.
This will do :

C#

lastrow1 = workSheet.UsedRange.Rows.Count;

Posted 20-Apr-11 21:16pm

Tarun.K.S