How to Export a DataTable to Excel using C# and ClosedXML?

Export DataTable to Excel using C#

Exporting DataTable to Excel is a common task in many Windows Forms applications. Various methods and libraries are available for this purpose. Here is the solution on how to use the popular ClosedXML library:

ClosedXML is a powerful library for creating and manipulating Excel workbooks and worksheets in C#. It provides a simple and intuitive API for converting data structures into Excel documents.

To export a DataTable to Excel using ClosedXML, follow these steps:

1. Create an XLWorkbook object:

<code>XLWorkbook wb = new XLWorkbook();</code>

2. Get the DataTable to be exported:

<code>DataTable dt = GetDataTableOrWhatever();</code>

3. Add the DataTable to the workbook as a worksheet and specify its name:

<code>wb.Worksheets.Add(dt,"WorksheetName");</code>

4. (Optional) Customize the exported Excel file by modifying the appearance of the worksheet, adding formulas, or formatting cells.

Finally, save the workbook to the desired location:

<code>wb.SaveAs("exported.xlsx");</code>

ClosedXML also provides extended functionality, such as adding charts, images, and custom cell styles.

This solution provides a reliable and efficient way to export DataTable data to Excel using C#. If you require more advanced Excel manipulation capabilities, ClosedXML offers a wide range of options to meet your specific needs.

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