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Asked: 2026-05-22T18:30:23+00:00

I am programatically reading an Excel file in C#. When I use Excel.Worksheet.Columns.columns.count, I

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I am programatically reading an Excel file in C#.

When I use Excel.Worksheet.Columns.columns.count, I get a value above 16,000.

But my excel sheet has only 15 columns. How do I get only those columns that have a value?

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  1. Editorial Team

    Here is how I usually do this:

    Excel.Application demoApp= new Excel.Application();
demoApp.Workbooks.Open(fileName);
int rowCount = demoApp.ActiveSheet.UsedRange.Rows.Count;
int colCount = demoApp.ActiveSheet.UsedRange.Columns.Count;

    so, the key is to use UsedRange, I hope this will help.

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