我是编码新手，我试图通过 jquery ajax 调用我的 c# 方法，因为我的表单操作不允许我的 OnClick() 事件运行，我无法删除表单操作，因为我的表单来自专有软件，并且每次都会自动给出表单操作，我尝试再次将其更改为默认值，但这不起作用。所以现在我尝试通过 Jquery Ajax 运行我的 C# 代码。如果您有更好的解决方法请提出。 感谢您的帮助，提前谢谢您
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="HTMLtoPDF.aspx.cs"
Inherits="HTMLtoPDF.HTMLtoPDF" %>
<!DOCTYPE html>
<!--[if IE 9]><html class="lt-ie10" lang="en" > <![endif]-->
<html class="no-js" lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=9" />
<title>Incomplete Grade Application</title>
</head>
<body>
<form action="xyz.aspx" id="form1" runat="server" method="post" name="form1">
/// Web Form ///
<div class="row">
<div class="col-sm-12">
<label class="control-label" style="margin-top:0px;margin-left:20px">Please use your mouse/finger sign below:</label>
<div id="esignature"></div>
<input type="hidden" id="bitmap" name="bitmap" value="" />
</div>
</div>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-2 col-xs-2">
<button type="button" class="btn btn-danger btn-xs" id="clear">Clear Signature</button>
</div>
<div class="col-lg-2 col-lg-offset-6 col-md-2 col-md-offset-6 col-sm-2 col-sm-offset-6 col-xs-2 col-xs-offset-6">
<div class="pull-right">
<input type="submit" class="btn btn-danger" id="reject-button" name="button" value="Reject" />
</div>
</div>
<div class="col-lg-2 col-md-2 col-sm-2 col-xs-2">
<input type="button" ID="submit" class="btn btn-success" value="Approve" />
<button id="hiddenButton" runat="server" onserverclick="btnClick_Click" style="display:none;" ></button>
</div>
</div>
<hr style="background-color:#750D17;height:1px" />
<div class="row">
<div class="col-lg-12">
<input type="text1" class="form-control" id="reject-reason" name="reject-reason">
<p class="help-block">Reject Reasons (if rejected)</p>
</div>
</div>
</div>
</div>
<br />
<br />
</form>
<script src="https://code.jquery.com/jquery-2.1.4.min.js" type="text/javascript"></script>
<script src="https://code.jquery.com/jquery-2.1.4.min.js" type="text/javascript"></script>
<script src="https://code.jquery.com/jquery-migrate-1.3.0.js"></script>
<script src="https://workflow.stratford.edu/Content/bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
<!--[if lt IE 9]>
<script src='https://workflow.stratford.edu/Content/jSignature/flashcanvas.js' type='text/javascript'></script>
<![endif]-->
<script src='https://workflow.stratford.edu/Content/jSignature/jSignature.min.js'></script>
<script type="text/javascript">
var isEmpty = function (element) {
if ($("#" + element).val() == "" || $("#" + element).val() == null) {
return true;
} else {
return false;
}
};
var arrayCheck = function (array) {
for (var i = 0; i < array.length; i++) {
if (array[i] == false) {
return false;
}
};
return true;
};
function arrayAssign(array, num) {
for (var i = 0; i < num; i++) {
array[i] = false;
};
return array;
};
function validationCheck(array, number, element) {
if (isEmpty(element)) {
$("#" + element).parent(".form-group").addClass("has-error");
array[number] = false;
} else {
$("#" + element).parent(".form-group").removeClass("has-error");
array[number] = true;
}
};
var pass1 = [];
$(document).ready(function () {
if ($.browser.msie) {
if (parseInt($.browser.version) < "9.0") {
alert("Sorry! This form does not support your current IE version, please use Firefox/Google Chrome to submit.");
}
}
var preSig = $('#stu-sig-bit').val();
$('#stu-sig').attr('src', preSig);
var fakeVari = $("#typea").val();
$("#esignature").jSignature({
"background-color": "transparent",
"decor-color": "transparent",
"color": "#1489FF",
});
$("#clear").click(function () {
$("#esignature").jSignature("reset");
});
$("input[type=text]").attr("readonly", true);
$("textarea1").attr("readonly", true);
//$("input[type=radio]").attr("disabled", "disabled");
$("#reject-reason").attr("readonly", false);
$("#submit").click(function () {
$("#bitmap").val($("#esignature").jSignature("getData"));
arrayAssign(pass1, 2);
pass1[2] = false;
validationCheck(pass1, 0, "remaining_work");
validationCheck(pass1, 1, "deadline_date");
pass1[2] = true;
if (!arrayCheck(pass1)) {
return false;
}
else if ($("#esignature").jSignature("getData", "native").length == 0) {
alert("Please sign at bottom of the form.");
return false;
} else {
$("#iso_sig").val($("#bitmap").val());
$("#iso_decision").val("no");
var date = new Date();
var month = date.getMonth() + 1;
var day = date.getDate();
var temp = (month < 10 ? "0" : "") + month + "/" + (day < 10 ? "0" : "") + day + "/" + date.getFullYear();
$("#iso_date").val(temp);
var answer = confirm('Are you sure you want to approve the case?');
if (answer == true) {
document.getElementById('<%= hiddenButton.ClientID %>').click();
} else {
return false;
}
}
});
$("#reject-button").click(function () {
$("#bitmap").val($("#esignature").jSignature("getData"));
if (isEmpty("reject-reason")) {
alert("Please write down the reason why you reject the request.");
return false;
} else if ($("#esignature").jSignature("getData", "native").length == 0) {
alert("Please sign at bottom of the form.");
return false;
} else {
$("#iso_sig").val($("#bitmap").val());
$("#iso_decision").val("no");
var date = new Date();
var month = date.getMonth() + 1;
var day = date.getDate();
var temp = (month < 10 ? "0" : "") + month + "/" + (day < 10 ? "0" : "") + day + "/" + date.getFullYear();
$("#iso_date").val(temp);
var answer = confirm('Are you sure you want to reject the case?');
if (answer == true) {
} else {
return false;
}
}
});
});
</script>
背后代码:
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnClick_Click(object sender, EventArgs e)
{
DownloadAsPDF();
}
public void DownloadAsPDF()
{
try
{
string strHtml = string.Empty;
string pdfFileName = Request.PhysicalApplicationPath + "\\files\\" + "CASEID6.pdf";
//string testPath = Server.MapPath("~/files/test.pdf");
string template = File.ReadAllText(Server.MapPath("~/Incomplete-Pdf-temp.html"));
CreatePDFFromHTMLFile(template, pdfFileName);
Response.Redirect("SendEmail.aspx");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
public void CreatePDFFromHTMLFile(string HtmlStream, string FileName)
{
try
{
object TargetFile = FileName;
string ModifiedFileName = string.Empty;
string FinalFileName = string.Empty;
GeneratePDF.HtmlToPdfBuilder builder = new GeneratePDF.HtmlToPdfBuilder(iTextSharp.text.PageSize.A4);
GeneratePDF.HtmlPdfPage first = builder.AddPage();
first.AppendHtml(HtmlStream);
byte[] file = builder.RenderPdf();
File.WriteAllBytes(TargetFile.ToString(), file);
iTextSharp.text.pdf.PdfReader reader = new iTextSharp.text.pdf.PdfReader(TargetFile.ToString());
ModifiedFileName = TargetFile.ToString();
ModifiedFileName = ModifiedFileName.Insert(ModifiedFileName.Length - 4, "1");
iTextSharp.text.pdf.PdfEncryptor.Encrypt(reader, new FileStream(ModifiedFileName, FileMode.Append), iTextSharp.text.pdf.PdfWriter.STRENGTH128BITS, "", "", iTextSharp.text.pdf.PdfWriter.AllowPrinting);
reader.Close();
if (File.Exists(TargetFile.ToString()))
File.Delete(TargetFile.ToString());
FinalFileName = ModifiedFileName.Remove(ModifiedFileName.Length - 5, 1);
File.Copy(ModifiedFileName, FinalFileName);
if (File.Exists(ModifiedFileName))
File.Delete(ModifiedFileName);
}
catch (Exception ex)
{
throw ex;
}
}
}
}
最佳答案
您将实现一个网络服务，或者您将使用一个处理程序文件。这个通用处理程序经常被使用，因为它不需要表单。使用该模板后，您将获得一个如下所示的文件:
public class SampleHandler : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
}
public bool IsReusable
{
get { return false; }
}
}
从您的主应用程序或表单中，您将按如下方式执行 ajax:
<script type="text/javascript">
$.ajax({
url: '<% Page.ResolveUrl("/SampleHandler.ashx") %>',
method: 'post',
...,
success : function (response) {
// Handle .ashx response.
}
});
</script>
这是最简单的方法之一。与在 [WebMethod] 属性中装饰的代码中声明方法相比，它允许您分离逻辑。
关于javascript - 如何在 WebForm 中从 Jquery Ajax 调用 C# 方法？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43453052/