导出选定的行和列datagridview

Question

我有一个datagridview，我需要导出选定的行和列使用itextsharp pdf。我可以导出整个datagridview，也只能选择行。

问题1.行以相反的顺序导出，而不是我如何检查它们。 （例如，I检查行ID 1，5,8和以pdf是8,5，1）

我不想改变的SelectionMode，因为现在我用FullRowSelect加载值的文本框并导出选定的行。我在这里找到了一个可能的答案：Get selected Row/Columns Count without Setting Selection Mode但我无法使用它..

问题2我需要用户选择行和列以导出。

这里是我的代码导出我的DGV：

private void exportDgvPDF(DataGridView dgvLoadAll, string filename) 
    { 
     BaseFont bf = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1250, BaseFont.EMBEDDED); 

     iTextSharp.text.Font text = new iTextSharp.text.Font(bf, 11, iTextSharp.text.Font.NORMAL); 

     Document doc = new Document(PageSize.A2.Rotate(), 1, 1, 1, 1); 
     PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream(filename, FileMode.Create)); 
     doc.Open(); 

     // I need to remove 21 columns since I have lots invisible "useless" columns .. will work on that later 
     PdfPTable pdftable = new PdfPTable(dgvLoadAll.ColumnCount - 21); 

     for (int j = 0; j < dgvLoadAll.Columns.Count - 21; j++) 
     { 
      PdfPCell cell = new PdfPCell(new Phrase(dgvLoadAll.Columns[j].HeaderText, text)); 
      cell.BackgroundColor = BaseColor.LIGHT_GRAY; 
      pdftable.AddCell(cell); 
     } 

     pdftable.HeaderRows = 0; 
     for (int i = 0; i < dgvLoadAll.SelectedRows.Count; i++) 
     //for (int i = 0; i < dgvLoadAll.Rows.Count; i++) 
     { 
      for (int k = 0; k < dgvLoadAll.Columns.Count - 21; k++) 
      { 

       if (dgvLoadAll[k, i].Value != null) 
       { 
        pdftable.AddCell(new Phrase(dgvLoadAll.SelectedRows[i].Cells[k].Value.ToString(), text)); 
        //pdftable.AddCell(new Phrase(dgvLoadAll[k, i].Value.ToString(), text)); 

       } 
      } 
     } 

     //float[] widths = new float[] { 15f, 50f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f }; 

     // pdftable.SetWidths(widths); 
     doc.Add(pdftable); 
     doc.Close(); 
    } 

Answer 1

我想通了。这里是我使用itextsharp将选定行和列导出为pdf的完成解决方案。

要选择要导出的列，我使用ColumnHeaderMouseClick事件。您需要使列不可排序。我将选定的列索引添加到列表columnList。如果已经有这个索引，那么它将不会被添加。

  private void dgvLoadAll_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) 
    { 

     DataGridViewColumn dataGridViewColumn = dgvLoadAll.Columns[e.ColumnIndex]; 

     if (columnsList.Contains(e.ColumnIndex)) 
     { 
      columnsList.Remove(e.ColumnIndex); 
      dataGridViewColumn.HeaderCell.Style.BackColor = SystemColors.Control; 
     } 
     else 
     { 
      columnsList.Add(e.ColumnIndex); 
      dataGridViewColumn.HeaderCell.Style.BackColor = SystemColors.Highlight; 
     } 
    } 

相似的，我创建一个列rowsselected。

 foreach (DataGridViewRow r in dgvLoadAll.SelectedRows) 
     { 
      rowsselected.Add(r.Index); 
     } 

主要出口功能则：

  BaseFont bf = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1250, BaseFont.EMBEDDED); 
      iTextSharp.text.Font text = new iTextSharp.text.Font(bf, 11, iTextSharp.text.Font.NORMAL); 

      Document doc = new Document(PageSize.A2.Rotate(), 1, 1, 1, 1); 
      PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream(filename, FileMode.Create)); 
      doc.Open(); 

      // sort selected columns and rows indexes in order to be exported how they are viewed in datagridview 
      columnsList.Sort(); 
      rowsselected.Sort(); 

      PdfPTable pdftable = new PdfPTable(columnsList.Count); 
      foreach (int columnindex in columnsList) 
      { 
       PdfPCell cell = new PdfPCell(new Phrase(dgvLoadAll.Columns[columnindex].HeaderText, text)); 
       cell.BackgroundColor = BaseColor.LIGHT_GRAY; 
       pdftable.AddCell(cell); 
      } 

      pdftable.HeaderRows = 0; 

      foreach (int rowindex in rowsselected) 
      { 
       foreach (int columnindex in columnsList) 
       { 
        if (dgvLoadAll[columnindex, rowindex].Value != null) 
        { 
         pdftable.AddCell(new Phrase(dgvLoadAll.Rows[rowindex].Cells[columnindex].Value.ToString(), text)); 
        } 
       } 
      } 
      //float[] widths = new float[] { 15f, 50f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f, 40f }; 
      // pdftable.SetWidths(widths); 
      doc.Add(pdftable); 
      doc.Close(); 
      rowsselected.Clear(); 

你可以改变你的选择列例如方式做一些复选框等，如果你需要排序你的datagridview列是自动的。 已解决。

Answer 2

private void exportDgvPDF(DataGridView dgvLoadAll, string filename) 
{ 

     BaseFont bf = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1250, BaseFont.EMBEDDED); 

     iTextSharp.text.Font text = new iTextSharp.text.Font(bf, 11, iTextSharp.text.Font.NORMAL); 

     Document doc = new Document(PageSize.A2.Rotate(), 1, 1, 1, 1); 
     PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream(filename, FileMode.Create)); 
     doc.Open(); 

     // I need to remove 21 columns since I have lots invisible "useless" columns .. will work on that later 
     PdfPTable pdftable = new PdfPTable(dgvLoadAll.ColumnCount - 21); 

     for (int j = 0; j < dgvLoadAll.Columns.Count - 21; j++) 
     { 
      PdfPCell cell = new PdfPCell(new Phrase(dgvLoadAll.Columns[j].HeaderText, text)); 
      cell.BackgroundColor = BaseColor.LIGHT_GRAY; 
      pdftable.AddCell(cell); 
     } 


     pdftable.HeaderRows = 0; 

    // i add foreach i hope this will help you 
     foreach (DataGridViewRow row in dataGridView1.SelectedRows) 
     { 
      for (int k = 0; k < dataGridView1.Columns.Count - 21; k++) 
      { 
       if (dgvLoadAll[k, i].Value != null) 
       { 
       pdftable.AddCell(new Phrase(row.Cells[k].Value.ToString(), text)); 
       } 
      } 

     } 


     doc.Add(pdftable); 
     doc.Close(); 


     }