How Can I Preserve Integer Formatting When Exporting a DataTable to Excel using EPPlus?

Exporting DataTable to Excel with EPPlus, Preserving Integer Format

When exporting data tables to Excel using EPPlus, it's often desirable to maintain the original data types, including integer values. This article explores how to achieve this seamlessly.

Question:

I have a DataTable with an integer property and I want to export it to Excel, ensuring that the integer format is preserved. How can I accomplish this with EPPlus?

Answer:

EPPlus provides a straightforward solution for this requirement. Here's a code snippet that demonstrates how to export a DataTable to Excel, maintaining the integer format:

using (ExcelPackage pck = new ExcelPackage(newFile))
{
  ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Accounts");
  ws.Cells["A1"].LoadFromDataTable(dataTable, true);
  pck.Save();
}

By setting the LoadFromDataTable method's second parameter to true, EPPlus will automatically detect and cast the data types in the DataTable. In the case of integer values, they will be formatted as numbers or floats in the Excel file.

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