本文整理汇总了C#中HtmlAgilityPack.HtmlDocument.SelectSingleNode方法的典型用法代码示例。如果您正苦于以下问题：C# HtmlDocument.SelectSingleNode方法的具体用法？C# HtmlDocument.SelectSingleNode怎么用？C# HtmlDocument.SelectSingleNode使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类HtmlAgilityPack.HtmlDocument的用法示例。
在下文中一共展示了HtmlDocument.SelectSingleNode方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ValidateHtml
public ValidationError[] ValidateHtml(HtmlDocument document)
{
var records = new List<ValidationError>();
var labels = document.SelectNodes("//label");
foreach (var label in labels)
{
var forAttribute = label.Attributes["for"];
HtmlNode relatedElement = null;
if (forAttribute != null)
{
string labelId = forAttribute.Value;
string xpath = string.Format("//input[@id='{0}']", labelId);
relatedElement = document.SelectSingleNode(xpath);
if (relatedElement == null)
{
xpath = string.Format("//select[@id='{0}']", labelId);
relatedElement = document.SelectSingleNode(xpath);
}
if (relatedElement == null)
{
xpath = string.Format("//textarea[@id='{0}']", labelId);
relatedElement = document.SelectSingleNode(xpath);
}
}
if (relatedElement == null)
{
string message = string.Format("Label does not relate to a form control: {0}", label.OuterHtml);
records.Add(new ValidationError(message));
}
}
return records.ToArray();
}示例2: ValidateHtml
public ValidationError[] ValidateHtml(HtmlDocument document)
{
var records = new List<ValidationError>();
var textDefinition = new {TagName = "text", Description = "Textbox", IsInput = true};
var passwordDefinition = new {TagName = "password", Description = "Password textbox", IsInput = true};
var checkboxDefinition = new {TagName = "checkbox", Description = "Checkbox", IsInput = true};
var selectDefinition = new { TagName = "select", Description = "Select list", IsInput = false };
var textAreaDefinition = new { TagName = "textarea", Description = "Text area", IsInput = false };
var definitions = new[] {textDefinition, passwordDefinition, checkboxDefinition, selectDefinition, textAreaDefinition};
foreach (var definition in definitions)
{
var formElementXPath = definition.IsInput ? string.Format("//input[@type='{0}']", definition.TagName) : string.Format("//{0}", definition.TagName);
var elements = document.SelectNodes(formElementXPath);
foreach (var element in elements)
{
var idAttribute = element.Attributes["id"];
HtmlNode correspondingLabel = null;
if (idAttribute != null)
{
var elementId = idAttribute.Value;
var xpath = string.Format("//label[@for='{0}']", elementId);
correspondingLabel = document.SelectSingleNode(xpath);
}
if (correspondingLabel == null)
{
var message = string.Format("{0} missing correpsonding label: {1}", definition.Description, element.OuterHtml);
records.Add(new ValidationError(message));
}
}
}
return records.ToArray();
}