ASP.NET MVC创建XML文件并实现元素增删改

这篇文章介绍了ASP.NET MVC创建XML文件并实现元素增删改的方法，文中通过示例代码介绍的非常详细。对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下！

如果创建如下的XML：

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Students>
  <Student Id="1">
<Name>darren</Name>
  </Student>
</Students>

创建XML文件

在HomeController中，在根目录下创建new.xml文件：

public ActionResult Index()
{
return View();
}

[HttpPost]
public ActionResult AddXml()
{
string path = Server.MapPath("~/new.xml");
XDocument doc = new XDocument(
new XDeclaration("1.0","utf-8","yes"),
new XElement("Students",new XElement("Student",
new XAttribute("Id","1"),
new XElement("Name","darren")
))
);
doc.Save(path);
return Json(new {msg = true}, JsonRequestBehavior.AllowGet);
}

在Index.cshtml中通过异步请求：

@model IEnumerable<MvcApplication1.Models.Student>

@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Index</h2>

<input type="button" value="创建XML" id="create"/>

@section scripts
{
<script type="text/javascript">
$(function() {
$('#create').on('click', function() {
$.ajax({
url: '@Url.Action("AddXml", "Home")',
dataType: 'json',
data: {},
type: 'POST',
success: function(data) {
if (data.msg) {
alert('创建成功');
}
}
});
});
});
</script>
}

显示XML文件元素

修改HomeController中的Index方法为：

public ActionResult Index()
{
string path = Server.MapPath("~/new.xml");
List<Student> result = new List<Student>();

var nodes = ReadXML(path).Descendants("Student");

foreach (var node in nodes)
{
Student student = new Student();
student.Id = Convert.ToInt32(node.Attribute("Id").Value);
foreach (var ele in node.Elements())
{
student.Name = ele.Value;
}
result.Add(student);
}

return View(result);
}

private XDocument ReadXML(string path)
{
XDocument xDoc = new XDocument();
xDoc = XDocument.Load(path);
return xDoc;
}

修改Home/Index.cshtml为：

@model IEnumerable<MvcApplication1.Models.Student>

@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Index</h2>

<input type="button" value="创建XML" id="create"/>

<table>
<tr>
<th>编号</th>
<th>姓名</th>
</tr>
@foreach (var item in Model)
{
<tr>
<td>@item.Id</td>
<td>@item.Name</td>
<td>@Html.ActionLink("修改","Update","Home",new {id= item.Id},null)</td>
<td>@Html.ActionLink("删除","Delete","Home", new {id = item.Id},null)</td>
</tr>
}
</table>

<br/>
@Html.ActionLink("创建","Create","Home")

@section scripts
{
<script type="text/javascript">
$(function() {
$('#create').on('click', function() {
$.ajax({
url: '@Url.Action("AddXml", "Home")',
dataType: 'json',
data: {},
type: 'POST',
success: function(data) {
if (data.msg) {
alert('创建成功');
}
}
});
});
});
</script>
}

添加元素到XML文件中

HomeController中：

public ActionResult Create()
{
return View();
}

[HttpPost]
public ActionResult Create(Student student)
{
string path = Server.MapPath("~/new.xml");
XDocument xd = XDocument.Load(path);

XElement newStudent = new XElement("Student",
new XAttribute("Id", student.Id),
new XElement("Name",student.Name));

xd.Root.Add(newStudent);
xd.Save(path);
return RedirectToAction("Index");
}

Home/Create.csthml中：

@model MvcApplication1.Models.Student

@{
ViewBag.Title = "Create";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Create</h2>

@using (Html.BeginForm("Create", "Home", FormMethod.Post, new {id = "addForm"}))
{
@Html.LabelFor(m => m.Id)
@Html.EditorFor(m => m.Id)

<br/>
@Html.LabelFor(m => m.Name)
@Html.EditorFor(m => m.Name)

<br/>
<input type="submit" value="创建"/>
}

修改XML文件中的元素

HomeController中：

public ActionResult Update(string id)
{
string path = Server.MapPath("~/new.xml");
XElement xe = XElement.Load(path);
var studentXe = xe.Elements("Student").Where(e => e.Attribute("Id").Value == id).FirstOrDefault();

Student student = new Student();
student.Id = Convert.ToInt32(studentXe.Attribute("Id").Value);
student.Name = studentXe.Element("Name").Value;
return View(student);
}

[HttpPost]
public ActionResult Update(Student student)
{
string path = Server.MapPath("~/new.xml");
var studentId = student.Id.ToString();
XDocument xd = XDocument.Load(path);
XElement node =
xd.Root.Elements("Student").Where(e => e.Attribute("Id").Value == studentId).FirstOrDefault();
node.SetElementValue("Name", student.Name);
xd.Save(path);
return RedirectToAction("Index");
}

Home/Update.csthml中：

@model MvcApplication1.Models.Student

@{
ViewBag.Title = "Update";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Update</h2>

@using (Html.BeginForm("Update", "Home", FormMethod.Post, new {id = "editForm"}))
{
@Html.HiddenFor(m => m.Id)

@Html.LabelFor(m => m.Name)
@Html.EditorFor(m => m.Name)

<br/>
<input type="submit" value="修改"/>
}

删除XML文件中的元素

HomeController中：

public ActionResult Delete(string id)
{
string path = Server.MapPath("~/new.xml");
XElement xe = XElement.Load(path);
var studentXe = xe.Elements("Student").Where(e => e.Attribute("Id").Value == id).FirstOrDefault();

Student student = new Student();
student.Id = Convert.ToInt32(studentXe.Attribute("Id").Value);
student.Name = studentXe.Element("Name").Value;
return View(student);
}

[HttpPost]
public ActionResult Delete(Student student)
{
string path = Server.MapPath("~/new.xml");
var studentId = student.Id.ToString();
XDocument xd = XDocument.Load(path);
xd.Root.Elements("Student").Where(e => e.Attribute("Id").Value == studentId).Remove();
xd.Save(path);
return RedirectToAction("Index");
}

Home/Delete.cshtml中：

@model MvcApplication1.Models.Student

@{
ViewBag.Title = "Delete";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Delete</h2>

@Model.Id
<br/>
@Model.Name
<br/>

@using (Html.BeginForm("Delete", "Home", FormMethod.Post, new {id = "delForm"}))
{
@Html.HiddenFor(m => m.Id)
<input type="submit" value="删除"/>
}