how to export gridview image to excel ,not showing image in excel

Here is an example that demonstrates these steps:

protected void ExportToExcel()
{
    // Create a new Excel workbook
    var workbook = new XLWorkbook();

    // Add a worksheet to the workbook
    var worksheet = workbook.Worksheets.Add("Sheet1");

    // Get the row and column indexes starting point
    int rowIndex = 1;
    int colIndex = 1;

    // Iterate through each row in the GridView
    foreach (GridViewRow row in GridView1.Rows)
    {
        // Reset the column index for each row
        colIndex = 1;

        // Iterate through each cell in the row
        foreach (TableCell cell in row.Cells)
        {
            // Get the cell value
            string cellText = cell.Text;

            // Check if the cell contains an image
            if (cell.Controls.Count > 0 && cell.Controls[0] is System.Web.UI.WebControls.Image)
            {
                // Get the URL of the image
                string imageUrl = ((System.Web.UI.WebControls.Image)cell.Controls[0]).ImageUrl;

                // Load the image from the URL
                using (var webClient = new WebClient())
                {
                    byte[] imageBytes = webClient.DownloadData(imageUrl);
                    using (MemoryStream stream = new MemoryStream(imageBytes))
                    {
                        // Add the image to the worksheet
                        var image = worksheet.AddPicture(stream);
                        image.MoveTo(worksheet.Cell(rowIndex, colIndex));
                        image.Scale(0.5);

                        // Increment the column index
                        colIndex++;
                    }
                }
            }
            else
            {
                // Set the cell value in the worksheet
                worksheet.Cell(rowIndex, colIndex).Value = cellText;

                // Increment the column index
                colIndex++;
            }
        }

        // Increment the row index
        rowIndex++;
    }

    // Save the Excel file to the response stream
    Response.Clear();
    Response.Buffer = true;
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xlsx");
    using (MemoryStream stream = new MemoryStream())
    {
        workbook.SaveAs(stream);
        stream.WriteTo(Response.OutputStream);
        Response.Flush();
        Response.End();
    }