因此,修改XML文档时遇到问题。这是我的XML
<CookBook>
<Recipe id="1">
<Title>Best recipe</Title>
<Category>...</Category>
<Description>Some text</Description>
<Amount>10</Amount>
<Ingredient>
<li>Ingredient 1</li>
<li>Ingredient 2</li>
</Ingredient>
<RecipeText>
<li>Step 1</li>
<li>Step 2</li>
<li>Step 3</li>
</RecipeText>
</Recipe>
<Recipe id="2">
<Title>Best recipe2</Title>
<Category>...</Category>
<Description>Some text</Description>
<Amount>10</Amount>
<Ingredient>
<li>Ingredient 1</li>
<li>Ingredient 2</li>
<li>Ingredient 3</li>
</Ingredient>
<RecipeText>
<li>heat the oven</li>
<li>Do something</li>
<li>Do something</li>
</RecipeText>
</Recipe>
</CookBook>
所以我需要更新Ingredient元素中特定配方的li元素。但我真的不知道如何...我有一个成分列表,其中包含我想要的XML值。
foreach (var item in lvAddIngredient.Items)
{
string text = item.ToString();
ingredients.Add(text);
}
当我创建新配方时,我使用此代码
var doc = XDocument.Load("recipeXML.xml");
var newElement = new XElement("Recipe", new XAttribute("id", id.ToString()),
new XElement("Title", txtTitle.Text),
new XElement("Category", selectedCategory.ToString()),
new XElement("Description", txtDescription.Text),
new XElement("Amount", txtAmount.Text),
new XElement("Ingredient", ingredients.Select(text => new XElement("li", text))),
new XElement("RecipeText", recipeText.Select(text => new XElement("li", text))));
doc.Element("CookBook").Add(newElement);
doc.Save("recipeXML.xml");
但我不知道如何更新这些li元素值。我尝试过类似的东西,但语法错误。
var xdoc = XDocument.Load("recipeXML.xml");
string id = lbRecipes.SelectedValue.ToString();
var items = from item in xdoc.Descendants("Recipe")
where item.Attribute("id").Value == id
select item;
foreach (XElement ele in items)
{
ele.SetElementValue("Title", txtTitle.Text);
ele.SetElementValue("Category",cbAddCategory.Text);
ele.SetElementValue("Amount", txtAmount.Text);
ele.SetElementValue("Description", txtDescription.Text);
ele.SetElementValue("Ingredient", ingredients.Select(text => ele.SetElementValue("li", text)));
}
答案 0 :(得分:0)
只需使用您的行标识符&#34; li&#34;通过循环获得所需的东西。
答案 1 :(得分:0)
我建议你为XML创建一个树视图,在树视图的帮助下,你可以浏览XML中现有的元素,选择你想要更新的任何值,在更新之后序列化树视图将值保存回XML文件。
您可以借助此代码段创建树视图!
try
{
treeView1.Nodes.Clear();
treeView1.Nodes.Add(new TreeNode(doc.DocumentElement.Name));
TreeNode tNode = new TreeNode();
tNode = treeView1.Nodes[0];
AddNode(doc.DocumentElement, tNode);
treeView1.Show();
}
catch (XmlException xmlEx)
{
MessageBox.Show(xmlEx.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void AddNode(XmlNode inXmlNode, TreeNode inTreeNode)
{
XmlNode xNode;
TreeNode tNode;
XmlNodeList nodeList;
int i;
if (inXmlNode.HasChildNodes)
{
nodeList = inXmlNode.ChildNodes;
for (i = 0; i <= nodeList.Count - 1; i++)
{
xNode = inXmlNode.ChildNodes[i];
inTreeNode.Nodes.Add(new TreeNode(xNode.Name));
tNode = inTreeNode.Nodes[i];
AddNode(xNode, tNode);
}
}
else
{
inTreeNode.Text = (inXmlNode.InnerText).Trim();
}