I want to delete content of an Excel file from my web application but I have some errors, I have used this code:
var excel = new Application();
var workbook = excel.Workbooks.Open(ExcelFileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
try
{
foreach (dynamic worksheet in workbook.Worksheets)
{
worksheet.Cells.ClearContents();
}
workbook.Save();
}
finally
{
workbook.Close();
excel.Quit();
}
but I'm having this error when I execute the application:
Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000208D5-0000-0000-C000-000000000046}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)).