Itext 创建带有页眉和页脚的多页PDF
大家好，提前谢谢你们的帮助。我需要开发一个应用程序，用iTextSharp生成多页PDF。每个页面都需要有页眉和页脚。此外，每个页面将有各种不同的对象，包括表、段落和类似于列表项的内容（可能是锥形列表）。我正试图找到一个教程来实现这一点。我困惑的核心是如何确定何时应该中断，以及如何在表格或段落太长而无法放在页面上时不覆盖页脚。任何帮助都将不胜感激 我很欣赏Bruno的反应，对HTML页面的样式设计很感兴趣，然后用iText进行渲染，但我真的很难在真正的页面上做到这一点。以下是我要打印的页面的一些示例HTML：Itext 创建带有页眉和页脚的多页PDF,itext,Itext,大家好，提前谢谢你们的帮助。我需要开发一个应用程序，用iTextSharp生成多页PDF。每个页面都需要有页眉和页脚。此外，每个页面将有各种不同的对象，包括表、段落和类似于列表项的内容（可能是锥形列表）。我正试图找到一个教程来实现这一点。我困惑的核心是如何确定何时应该中断，以及如何在表格或段落太长而无法放在页面上时不覆盖页脚。任何帮助都将不胜感激 我很欣赏Bruno的反应，对HTML页面的样式设计很感兴趣，然后用iText进行渲染，但我真的很难在真正的页面上做到这一点。以下是我要打印的页面的一些
<body>
<header class="onlyprint">
<ul>
<li>
Dr. Who
</li>
<li>
1234 Somewhere St.
</li>
<li>
Anywhere, US 12345
</li>
</ul>
</header>
<div id="divmain" style="width: 760px;">
<ul id="ulPatientDetails">
<li>
<label>Patient Name:</label>
<span>TESTCASE, TOM</span>
</li>
<li>
<label>MRNumber:</label>
<span>999999</span>
</li>
<li>
<label>Patient DOB:</label>
<span>99/99/9999</span>
</li>
</ul>
<table id="tblhistorian">
<caption>Historian</caption>
<tr>
<th>Time Entered</th>
<th>Historian</th>
<th>Historian Name</th>
<th>Other Persons</th>
<th>Language</th>
<th>Other Language</th>
<th>Translator</th>
<th>Entered By</th>
</tr>
<tr>
<td>
99/99/9999
</td>
<td>
Mother
</td>
<td></td>
<td></td>
<td>
English
</td>
<td></td>
<td></td>
<td>
Dr. Who
</td>
</tr>
</table>
<ul id="ulPatientAllergies">
<li>
<label>Allergies:</label>
<span>BLAH BLAH BLAH BLAH</span>
</li>
</ul>
<table id="tblTobaccoUse">
<caption>Tobacco Use</caption>
<tr>
<th>Patient Uses Tobacco</th>
<th>Family Uses Tobacco</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td>N/A</td>
<td>No</td>
<td>Someone</td>
<td>99/99/9999</td>
</tr>
</table>
<table id="outsidemedications">
<caption>Active Prescriptions</caption>
<tr>
<th>Date</th>
<th>Prescribed By</th>
<th>Prescription</th>
<th>SIG</th>
<th>Route</th>
<th>Dispense</th>
<th>Refills</th>
</tr>
<tr>
<td>
99/99/9999
</td>
<td>
DR. WHO
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
</td>
<td>
</td>
<td>
0
</td>
</tr>
<tr>
<td>
99/99/9999
</td>
<td>
DR. WHO
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
<table id="outsidemedications">
<caption>Other Medications</caption>
<tr>
<th>Medication</th>
<th>SIG</th>
<th>Source</th>
<th>Category</th>
<th>Comments</th>
<th>Entered By</th>
<th>Date Entered</th>
</tr>
<tr>
<td colspan="7">No current medications.</td>
</tr>
</table>
<table id="tblChiefComplaints">
<caption>Chief Complaints</caption>
<tr>
<th>Category</th>
<th>Description</th>
<th>Duration</th>
</tr>
<tr>
<td>General</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>BLAH BLAH BLAH BLAH</td>
</tr>
<tr>
<td>General</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>BLAH BLAH BLAH BLAH</td>
</tr>
</table>
<table id="tblReviewOfSystems">
<caption>Review of Systems</caption>
<tr>
<th>Category</th>
<th>Symptom</th>
<th>Result</th>
</tr>
<tr>
<td>General</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Skin</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Eyes</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Ears</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Nose</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Mouth or Teeth</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Face or Neck</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Respiratory</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Cardio</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Abdomen</td>
<td>BLAH BLAH BLAH BLAH </td>
<td>None</td>
</tr>
<tr>
<td>MSLymph</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
<tr>
<td>Neuro</td>
<td>BLAH BLAH BLAH BLAH</td>
<td>None</td>
</tr>
</table>
<table id="tblPesentIllnesses">
<caption>History of Present Illnesses</caption>
<tr>
<th>Complaint</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td>BLAH BLAH BLAH BLAH</td>
<td>Dr. Who</td>
<td>99/99/9999</td>
</tr>
<tr>
<td>BLAH BLAH BLAH BLAH</td>
<td>Dr. Who</td>
<td>99/99/9999</td>
</tr>
<tr>
<td>BLAH BLAH BLAH BLAH</td>
<td>Dr. Who</td>
<td>99/99/9999</td>
</tr>
</table>
<table id="tblFamilyIllnesses">
<caption>Family History</caption>
<tr>
<th>Relationship</th>
<th>Name</th>
<th>DOB</th>
<th>Age</th>
<th>Illness</th>
</tr>
</table>
<table id="tblWellChildHistory">
<caption>Well Child History</caption>
<tr>
<th>Dietary History</th>
<th>Physical Activity</th>
<th>Sleeping Habits</th>
<th>Bowel Habits</th>
<th>Dental Visit In Past Year</th>
<th>Exposure To Illnesses</th>
<th>Alcohol Use</th>
<th>Drug Use</th>
<th>Travel History</th>
<th>Sexual Activity</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="3">No past medical history.</td>
</tr>
</table>
<table id="tblSocialHistory">
<caption>Social History</caption>
<tr>
<th>Primary Caregiver</th>
<th>Home Status</th>
<th>Child Attends</th>
<th>School Name</th>
<th>Grade</th>
<th>School Performance</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="12">No social history entered for this visit.</td>
</tr>
</table>
<table id="tblDevelopmentalMilestones">
<caption>Developmental Milestones</caption>
<tr>
<th>Category</th>
<th>Question</th>
<th>Answer</th>
<th>Entered By</th>
<th>TimeEntered</th>
</tr>
<tr>
<td colspan="3">No developmental assessment entered.</td>
</tr>
</table>
<table id="tblDevelopmentalComments">
<caption>Developmental Comments</caption>
<tr>
<th>Comment</th>
<th>Entered By</th>
<th>TimeEntered</th>
</tr>
<tr>
<td colspan="3">No developmental comments entered.</td>
</tr>
</table>
<table id="tblHouseholdRiskFactorResponses">
<caption>Household Risk Factors</caption>
<tr>
<th>Question</th>
<th>Response</th>
<th>Comment</th>
</tr>
<tr>
<td colspan="3">No household risk factors entered for this visit.</td>
</tr>
</table>
<table id="tblFamilyBarriersResponses">
<caption>Family Barriers</caption>
<tr>
<th>Question</th>
<th>Response</th>
<th>Comment</th>
</tr>
<tr>
<td colspan="3">No household risk factors entered for this visit.</td>
</tr>
</table>
<table id="tblPHQAAssessments">
<caption>PHQ-A Assessment</caption>
<tr>
<th>Question</th>
<th>Response</th>
<th>Score</th>
</tr>
<tr>
<td colspan="3">No current assessments.</td>
</tr>
</table>
<table id="tblPatientVitals">
<caption>Vitals</caption>
<tr>
<th>Time Entered</th>
<th>Temp.</th>
<th>H.R.</th>
<th>R.R.</th>
<th>Weight</th>
<th>Height</th>
<th>BMI</th>
<th>Head Circ.</th>
<th>O2 Sat.</th>
<th>BP</th>
<th>Comments</th>
<th>Entered By</th>
</tr>
<tr>
<td>11/3/2017 2:51:00 PM</td>
<td>98.6</td>
<td>90</td>
<td>25</td>
<td>58.0000</td>
<td>0.0000</td>
<td></td>
<td>0.0000</td>
<td>0.0000</td>
<td>0/0 Sitting Sitting</td>
<td></td>
<td>Dr. Who</td>
</tr>
</table>
<ul id="ulexamdetails">
<li id="liphysicalexamheader">Physical Exam</li>
<li><span class="categorylabel">General</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span><span class="spexception"> Except: BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Skin</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Head</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Eyes</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Ears</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Nose</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Mouth</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span><span class="spexception"> Except: BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Face Or Neck</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Respiratory</span></li>
<li><span class="spnormal"></span></li>
<li><span class="categorylabel">Cardio</span></li>
<li>
<span class="spnormal">BLAH BLAH BLAH BLAH
</span>
</li>
<li><span class="categorylabel">Abdomen</span></li>
<li>
<span class="spnormal">BLAH BLAH BLAH BLAH
</span>
</li>
<li><span class="categorylabel">MS/Lymph</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
<li><span class="categorylabel">Neuro</span></li>
<li><span class="spnormal">BLAH BLAH BLAH BLAH</span></li>
</ul>
<table id="tblVisionResults">
<caption>Vision Results</caption>
<tr>
<th>Left Eye</th>
<th>Right Eye</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="4">No vision results this visit.</td>
</tr>
</table>
<table id="tblHearingTestResults">
<caption>Hearing Results</caption>
<tr>
<th>Frequency</th>
<th>Db Right</th>
<th>Db Left</th>
<!--
<th>Entered By</th>
<th>Time Entered</th>
-->
</tr>
<tr>
<td colspan="4">No hearing results this visit.</td>
</tr>
</table>
<table id="tblInhouseLabs">
<caption>In-house Labs</caption>
<tr>
<th>Lab</th>
<th>Lab Value</th>
<th>Comment</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="4">No in-house labs results this visit.</td>
</tr>
</table>
<table id="tblInhouseUrineResults">
<caption>In-house Urine Results</caption>
<tr>
<th>Leukocytes</th>
<th>Nitrite</th>
<th>Urobili</th>
<th>Protein</th>
<th>PH</th>
<th>Blood</th>
<th>SG</th>
<th>Ketone</th>
<th>Bilirubin</th>
<th>Glucose</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="12">No urine results this visit.</td>
</tr>
</table>
<table id="tblInOfficeCourse">
<caption>Assessment</caption>
<tr>
<th>In-Office Course</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td colspan="3">No in-office course.</td>
</tr>
</table>
<fieldset id="fldassessment">
<legend>Assessment</legend>
<table id="tbldiagnosiscodes" name="tbldiagnosiscodes"></table>
<table id="tblPatientAssessment">
<caption>Assessment</caption>
<tr>
<th>Assessment</th>
<th>Entered By</th>
<th>Time Entered</th>
</tr>
<tr>
<td>BLAH BLAH BLAH BLAH</td>
<td>Dr. Who</td>
<td>99/99/9999</td>
</tr>
</table>
<table id="tblComplianced">
<caption>Compliance</caption>
<tr>
<th>Compliance</th>
<th>Compliance Code</th>
<th>Entered By</th>
<th>Time Entered By</th>
</tr>
<tr>
<td colspan="4">No Compliance Entered This Visit.</td>
</tr>
</table>
</fieldset>
<fieldset id="fldplanofcare">
<legend>Plan of Care</legend>
<table id="tblvisitprescriptions" name="tblvisitprescriptions"></table>
<table id="tblDiagnosisCodes">
<caption>Diagnosis Codes</caption>
<tr>
<th>Code</th>
<th>Description</th>
</tr>
<tr>
<td colspan="2">No Diagnosis Codes Entered</td>
</tr>
</table>
<table id="tblCPTCodes">
<caption>CPT Codes</caption>
<tr>
<th>Code</th>
<th>Description</th>
</tr>
<tr>
<td>
99213
</td>
<td>
ESTAB. EXPANDED
</td>
</tr>
</table>
<table id="tblPrescriptionsThisVisit">
<caption>Prescriptions This Visit</caption>
<tr>
<th>Date</th>
<th>Prescribed By</th>
<th>Prescription</th>
<th>SIG</th>
<th>Route</th>
<th>Dispense</th>
<th>Refills</th>
</tr>
<tr>
<td>
99/99/9999
</td>
<td>
Dr. Who
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
BLAH BLAH BLAH BLAH
</td>
<td>
</td>
<td>
</td>
<td>
0
</td>
</tr>
</table>
<table id="tblLabsOrdered">
<caption>Labs Ordered This Visit</caption>
<tr>
<th>Date</th>
<th>Test Ordered</th>
<th>Ordered By</th>
<th>Order Urgency</th>
</tr>
<tr>
<td colspan="4">No Labs Ordered This Visit.</td>
</tr>
</table>
<table id="outsidemedications">
<caption>Radiology Orders This Visit</caption>
<tr>
<th>Date</th>
<th>Test Ordered</th>
<th>Ordered By</th>
<th>Order Urgency</th>
</tr>
<tr>
<td colspan="4">No Radiology Ordered This Visit.</td>
</tr>
</table>
<table id="tblcptcodes" name="tblcptcodes"></table>
<table id="tblReferrals">
<caption>Referrals This Visit</caption>
<tr>
<th>Speciality</th>
<th>Speciality Group</th>
<th>Specialist</th>
</tr>
<tr>
<td colspan="4">No Referrals This Visit.</td>
</tr>
</table>
<div id="divplanofcare">
<ul id="ulcareplanlist">
<li>BLAH BLAH BLAH BLAH</li>
</ul>
</div>
</fieldset>
</div>
<!--End of body-->
<footer class="onlyprint">
<ul>
<li>Tom Testcase</li>
<li>99/99/9999</li>
</ul>
</footer>
</body>
我不确定如何实现CSS以确保页面内容不会覆盖页脚。此外，由于页面上的许多元素都是可能会扩展的表，您是否需要预先了解这些元素中有多少数据，以及在何处使用分页符？有人能帮我开始吗？谢谢。使用CSS设置文档的页眉、页脚和分页符的示例： 页面设置 标题 页脚 分页符 在元素上使用前分页符、后分页符和内部分页符来设置适当的分页符 补充阅读 布鲁诺·洛瓦吉更新 上述答案是正确的，但不完整。它解释了如何在HTML中定义页眉和页脚，但没有解释如何使用这些页眉和页脚创建PDF。幸运的是，这只需要一行代码 看。在中，有一个部分名为使用@Page规则添加第X页（共Y页），该部分展示了@Page规则如何与iText 7的pdfHTML加载项结合使用 您只需编写以下代码行：
HtmlConverter.ConvertToPdf(src, dest);
其中src是HTML文件的源文件，dest是PDF文件的目标文件。首先：我们不再谈论iTextSharp。iTextSharp已重命名为.NET的iText。当前版本是iText 7 添加页眉和页脚的说明如下： 首先，您需要创建IEventHandler接口的实现，例如：
protected internal class MyEventHandler : IEventHandler {
public virtual void HandleEvent(Event @event) {
PdfDocumentEvent docEvent = (PdfDocumentEvent)@event;
PdfDocument pdfDoc = docEvent.GetDocument();
PdfPage page = docEvent.GetPage();
int pageNumber = pdfDoc.GetPageNumber(page);
Rectangle pageSize = page.GetPageSize();
PdfCanvas pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc);
//Set background
Color limeColor = new DeviceCmyk(0.208f, 0, 0.584f, 0);
Color blueColor = new DeviceCmyk(0.445f, 0.0546f, 0, 0.0667f);
pdfCanvas.SaveState()
.SetFillColor(pageNumber % 2 == 1 ? limeColor : blueColor)
.Rectangle(pageSize.GetLeft(), pageSize.GetBottom(), pageSize.GetWidth(), pageSize.GetHeight())
.Fill()
.RestoreState();
//Add header and footer
pdfCanvas.BeginText()
.SetFontAndSize(C03E03_UFO.helvetica, 9)
.MoveText(pageSize.GetWidth() / 2 - 60, pageSize.GetTop() - 20)
.ShowText("THE TRUTH IS OUT THERE")
.MoveText(60, -pageSize.GetTop() + 30)
.ShowText(pageNumber.ToString())
.EndText();
//Add watermark
iText.Layout.Canvas canvas = new iText.Layout.Canvas(pdfCanvas, pdfDoc, page.GetPageSize());
canvas.SetProperty(Property.FONT_COLOR, Color.WHITE);
canvas.SetProperty(Property.FONT_SIZE, 60);
canvas.SetProperty(Property.FONT, C03E03_UFO.helveticaBold);
canvas.ShowTextAligned(new Paragraph("CONFIDENTIAL"), 298, 421, pdfDoc.GetPageNumber(page), TextAlignment.
CENTER, VerticalAlignment.MIDDLE, 45);
pdfCanvas.Release();
}
}
PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
pdf.AddEventHandler(PdfDocumentEvent.END_PAGE, new MyEventHandler(this));
有关完整示例，请参见。查看分页媒体，它将帮助您处理分页符、页眉和页脚：您是否查看了itextpdf.com网站上的示例？这是一个完整的教程，我看到您在更新答案的同时删除了答案。我很高兴看到你取消了它，因为这确实是一个很好的简单的方法来创建PDF的页眉和页脚几乎没有C代码需要，只是HTML和CSS。请原谅我的无知。你是在建议我最初用HTML设置页面，然后将HTML转换为PDF吗？@BrunoLowagie是的，我认为我走错了方向，打算重新编写我的答案，尽管你的编辑再次确认了这一点-谢谢@kmcnet yep-本质上，使用HTML作为内容，CSS作为页面样式，iTextSharp转换为PDF。下面是一个很好的教程，可以帮助您理解所需的CSS：@kmcnet您有两个答案和两个有效选项。这取决于你决定什么是你的项目的最佳选择。它可以是Matt's，您可以在那里创建HTML并转换为PDF；它可以是我的，你可以在那里编写你的PDF文件，并对页眉和页脚使用事件处理程序。我们不能为你做那个决定，因为我们不知道你的项目。布鲁诺。谢谢你的帮助和有趣的信息。您的许多教程似乎都与格式良好、样式新颖的HTML页面齐头并进。我试图模仿你在用CSS定义样式中描述的页面规则，我成功地获得了显示在每个页面上的页眉和页脚，但是每个页面的主体都覆盖了页眉和页脚。我编辑了第一篇文章以显示当前的HTML。我不确定我错在哪里。显然，我不能继续转换为PDF。想象一下，一台打印机可以打印在信纸上。文档和打印机都不知道该纸张上已打印的内容，文档内容可能与纸张上预打印的内容重叠。为了避免这种情况，您必须以不发生重叠的方式定义文档的页边距。Bruno。我很欣赏并理解这个类比，但在实践中似乎无法做到这一点。我已经在@page上使用了边距，但似乎没有任何效果。有什么见解吗？
HtmlConverter.ConvertToPdf(src, dest);
protected internal class MyEventHandler : IEventHandler {
public virtual void HandleEvent(Event @event) {
PdfDocumentEvent docEvent = (PdfDocumentEvent)@event;
PdfDocument pdfDoc = docEvent.GetDocument();
PdfPage page = docEvent.GetPage();
int pageNumber = pdfDoc.GetPageNumber(page);
Rectangle pageSize = page.GetPageSize();
PdfCanvas pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc);
//Set background
Color limeColor = new DeviceCmyk(0.208f, 0, 0.584f, 0);
Color blueColor = new DeviceCmyk(0.445f, 0.0546f, 0, 0.0667f);
pdfCanvas.SaveState()
.SetFillColor(pageNumber % 2 == 1 ? limeColor : blueColor)
.Rectangle(pageSize.GetLeft(), pageSize.GetBottom(), pageSize.GetWidth(), pageSize.GetHeight())
.Fill()
.RestoreState();
//Add header and footer
pdfCanvas.BeginText()
.SetFontAndSize(C03E03_UFO.helvetica, 9)
.MoveText(pageSize.GetWidth() / 2 - 60, pageSize.GetTop() - 20)
.ShowText("THE TRUTH IS OUT THERE")
.MoveText(60, -pageSize.GetTop() + 30)
.ShowText(pageNumber.ToString())
.EndText();
//Add watermark
iText.Layout.Canvas canvas = new iText.Layout.Canvas(pdfCanvas, pdfDoc, page.GetPageSize());
canvas.SetProperty(Property.FONT_COLOR, Color.WHITE);
canvas.SetProperty(Property.FONT_SIZE, 60);
canvas.SetProperty(Property.FONT, C03E03_UFO.helveticaBold);
canvas.ShowTextAligned(new Paragraph("CONFIDENTIAL"), 298, 421, pdfDoc.GetPageNumber(page), TextAlignment.
CENTER, VerticalAlignment.MIDDLE, 45);
pdfCanvas.Release();
}
}
PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
pdf.AddEventHandler(PdfDocumentEvent.END_PAGE, new MyEventHandler(this));