使用iTextSharp将dataGridView导出为PDF时对元素进行分组

Question

I'm trying to export my datagridview to PDF however while doing that I want to group the rows which have the same Group name. The code I use to export to pdf is at the below;

private void PrintReport_Click(object sender, EventArgs e)
    {
        try
        {
            //create iTextSharp table
            PdfPTable pdfTable = new PdfPTable(dataGridView1.ColumnCount);
            pdfTable.DefaultCell.Padding = 3;
            pdfTable.WidthPercentage = 30;
            pdfTable.HorizontalAlignment = Element.ALIGN_LEFT;
            pdfTable.DefaultCell.BorderWidth = 1; 
            //Adding Header row
            PdfPCell cell = new PdfPCell(new Phrase("Report"));
            cell.Colspan = 11;
            cell.BackgroundColor = new iTextSharp.text.Color(50, 50, 120);
            cell.HorizontalAlignment = 1;
            pdfTable.TotalWidth = 1200f;
            pdfTable.LockedWidth = true;
            pdfTable.AddCell(cell);
            pdfTable.AddCell("Group");
            pdfTable.AddCell("Numara");
            pdfTable.AddCell("Müşteri ID");
            pdfTable.AddCell("Tanım");
            pdfTable.AddCell("IP Adresi");
            pdfTable.AddCell("Kullanıcı");
            pdfTable.AddCell("Şifre");
            pdfTable.AddCell("Domain");
            pdfTable.AddCell("2.IP");
            pdfTable.AddCell("2.Kullanıcı");
            pdfTable.AddCell("2.Kullanıcı Şifre");


            //Adding DataRow
            for (int i = 0; i < dataGridView1.Rows.Count; i++)
            {
                for (int j = 0; j < dataGridView1.Columns.Count; j++)
                {
                    if (dataGridView1.Rows[i].Cells[j].Value != null)
                    {
                        if (j == 6|| j == 10)
                        {
                            pdfTable.AddCell("*****");                                
                        }
                        else if(j==0)
                        {
                            pdfTable.AddCell(dataGridView1.Rows[i].Cells[6].Value.ToString());
                        }
                        else if(j==6)
                        {
                            pdfTable.AddCell(dataGridView1.Rows[i].Cells[0].Value.ToString());
                        }
                        else
                        {
                            pdfTable.AddCell(dataGridView1.Rows[i].Cells[j - 1].Value.ToString());                                
                        }
                    }
                    else
                    {
                        pdfTable.AddCell(" ");
                    }
                }
            }  

            //pdfTable.AddCell(cells.Value.ToString());
            //Exporting to PDF
            string folderPath = "C:\\PDFs\\";
            if (!Directory.Exists(folderPath))
            {
                Directory.CreateDirectory(folderPath);
            }
            using (FileStream stream = new FileStream(folderPath + "Rapor.pdf", FileMode.Create))
            {
                Document pdfDoc = new Document(PageSize.A2, 10f, 10f, 10f, 0f);
                PdfWriter.GetInstance(pdfDoc, stream);
                pdfDoc.Open();
                pdfDoc.Add(pdfTable);
                pdfDoc.Close();
                stream.Close();
            }

            MessageBox.Show("C:\\PDFs uzantısına rapor kaydedildi!");
        }
        catch (Exception msg)
        {
            MessageBox.Show(msg.Message, "Error");
        }

    }

Code works pretty well, it exports the datagridview to pdf file but it does not work the way I want, It does not group columns by 'Group Name'
I'm stuck in this problem any help would be appreciated.

Answer 1

您可以仅对结果进行排序，为每个具有数据的“组”创建一个pdfTable吗？

Answer 2

I have solved the problem with a little trick, I have listed all the groups in a list named 'testlist' So I can manage the handle the sutiation within 1 pdfTable There is the code snippet:

for (int element = 0; element < testList.Count;element++ )
            {
                string name = testList.ElementAt(element).ToString();
                PdfPCell cell1 = new PdfPCell(new Phrase(name));
                cell1.BackgroundColor = new iTextSharp.text.Color(160, 160, 210);
                cell1.Colspan = 11;
                cell1.HorizontalAlignment = 1;
                pdfTable.AddCell(cell1);
                for (int i = 0; i < dataGridView1.Rows.Count; i++)
                {
                    for (int j = 0; j < dataGridView1.Columns.Count; j++)
                    {
                        if (dataGridView1.Rows[i].Cells[j].Value != null)
                        {
                            if(dataGridView1.Rows[i].Cells[6].Value.ToString() == name.ToString())
                            { 
                                if (j == 6 || j == 10)
                                {
                                    pdfTable.AddCell("*****");
                                }
                                else if (j == 0)
                                {
                                    pdfTable.AddCell(dataGridView1.Rows[i].Cells[6].Value.ToString());
                                }
                                else if (j == 6)
                                {
                                    pdfTable.AddCell(dataGridView1.Rows[i].Cells[0].Value.ToString());
                                }
                                else
                                {
                                    pdfTable.AddCell(dataGridView1.Rows[i].Cells[j - 1].Value.ToString());
                                }

                            }                                
                        }
                        else
                        {
                            pdfTable.AddCell(" ");
                        }

                    }
                }

            }