How read dde data?

I have quik terminal. Its save data with dde to xlsx file. When i read data with aspose - its always show one data, but in fact its changes every 5 sec. Whats wrong?

Workbook wb = new Workbook(filename);
Worksheet ws = wb.Worksheets.First();
Cells cells = ws.Cells;
var a = cells["A2"].Value;
var b = cells["B2"].Value;
var c = cells["C2"].Value;
var d = cells["D2"].Value;

@mesteruh,

Thanks for the sample code segment.

Please note, Aspose.Cells does not support the dynamically changed data source at runtime because we don’t know when should we detect the changes. When Aspose.Cells reads the file, it generates a copy of the original file into memory without making any binding with the file for data. We are not entirely certain about your requirements and scenario. So please explain more about your requirements and situation. You may also provide the template file with test code to describe the scenario better, we will check and help you through.