Analyzing your prompt, please hold on...
An error occurred while retrieving the results. Please refresh the page and try again.
Aspose.Cells provides the Picture.SignatureLine property to add a signature line to the worksheet.
The following sample code demonstrates how to make use of the Picture.SignatureLine property to add a signature line to the worksheet. The screenshot shows the effect of the sample code on the sample Excel file after execution.

Analyzing your prompt, please hold on...
An error occurred while retrieving the results. Please refresh the page and try again.