打印PDF与多页
本文关键字：PDF 打印 | 更新日期: 2023-09-27 18:11:39
我到处找东西来帮助我解决这个问题，但到目前为止还没有。我试图创建一个程序，允许用户打印pdf文件的集合。我使用ABCPDF9来获取我的pdf(其中大部分存储为html)，并将它们全部附加到单个ABCPDF.Doc对象。我得到的问题是，当我有这些多页，我最终只有一页的pdf打印。下面是一些代码片段:
private void ProcessAndPrintSelected()
{
var selectedForm = SubSonicRepository.Instance.CommunicationRepository.GetMessageTemplateByID((int)cmboChooseForm.SelectedValue);
_currentItemIndex = 0;
int itemsCount = dataGridViewLoans.RowCount;
_currentPrintPageIndex = 1;
foreach (DataGridViewRow row in this.dataGridViewLoans.Rows)
{
lblPrinterProgress.Text = "Printing document " + _currentItemIndex + " of " + itemsCount + ".";
lblPrinterProgress.Refresh();
Application.DoEvents();
BulkPrinterLoanModel loan = row.DataBoundItem as BulkPrinterLoanModel;
try
{
if (selectedForm.MailMessageContent != null)
{
byte[] formBytes = GetFormBytes(selectedForm.ID, loan.ApplicantID, loan.LoanID);
doc.Read(formBytes);
appendedDocs.Append(doc);
}
else
{
throw new InvalidOperationException("No PDF data to print.");
}
}
catch (Exception x)
{
//for now, don't do anything, not even logging, but don't halt queue either.
MessageBox.Show(x.ToString());
}
}
printDoc.PrintPage += new PrintPageEventHandler(pd_PrintPage);
printDoc.PrinterSettings.FromPage = 1;
printDoc.PrinterSettings.ToPage = appendedDocs.PageCount;
printDoc.PrinterSettings.MinimumPage = 1;
printDoc.PrinterSettings.MaximumPage = appendedDocs.PageCount;
PrintDialog pDialog = new PrintDialog();
pDialog.Document = printDoc;
pDialog.AllowSomePages = true;
if (pDialog.ShowDialog() == DialogResult.OK)
{
pDialog.Document.Print();
}
}
和我的printpage事件。
void pd_PrintPage(object sender, PrintPageEventArgs e)
{
XRect cropBox = appendedDocs.CropBox;
double srcWidth = (cropBox.Width / 72) * 100;
double srcHeight = (cropBox.Height / 72) * 100;
double pageWidth = e.PageBounds.Width;
double pageHeight = e.PageBounds.Height;
double marginX = e.PageSettings.HardMarginX;
double marginY = e.PageSettings.HardMarginY;
//center it
double x = (pageWidth - srcWidth) / 2;
double y = (pageHeight - srcHeight) / 2;
x -= marginX;
y -= marginY;
RectangleF rect = new RectangleF((float)x, (float)y, (float)srcWidth, (float)srcHeight);
appendedDocs.Rect.SetRect(cropBox);
int rez = e.PageSettings.PrinterResolution.X;
appendedDocs.Rendering.DotsPerInch = rez;
Graphics g = e.Graphics;
using (Bitmap bitmap = appendedDocs.Rendering.GetBitmap())
{
g.DrawImage(bitmap, rect);
}
}
我看过ABCPDF手册，但是所有关于打印的帮助都是在他们的示例项目中呈现的，我很难理解。对此事的任何帮助都将是感激的。谢谢:)
我明白了，主要是看下面的问题。我需要博士帮忙。PageNumber以访问pdf的每个页面。下面是打印页面事件，我在这里修改了代码。
void pd_PrintPage(object sender, PrintPageEventArgs e)
{
_currentItemIndex++;//added index to keep track of page. default to 1
appendedDocs.PageNumber = _currentItemIndex;//set to current page for printing
XRect cropBox = appendedDocs.CropBox;
double srcWidth = (cropBox.Width / 72) * 100;
double srcHeight = (cropBox.Height / 72) * 100;
double pageWidth = e.PageBounds.Width;
double pageHeight = e.PageBounds.Height;
double marginX = e.PageSettings.HardMarginX;
double marginY = e.PageSettings.HardMarginY;
//center it
double x = (pageWidth - srcWidth) / 2;
double y = (pageHeight - srcHeight) / 2;
x -= marginX;
y -= marginY;
RectangleF rect = new RectangleF((float)x, (float)y, (float)srcWidth, (float)srcHeight);
appendedDocs.Rect.SetRect(cropBox);
int rez = e.PageSettings.PrinterResolution.X;
appendedDocs.Rendering.DotsPerInch = rez;
Graphics g = e.Graphics;
using (Bitmap bitmap = appendedDocs.Rendering.GetBitmap())
{
g.DrawImage(bitmap, rect);
}
e.HasMorePages = _currentItemIndex < appendedDocs.PageCount;//check for more pages.
}