private static void ValidateValues(Expression xpath, FailureReaction reaction, List <string> returnValues)
{
foreach (string value in returnValues)
{
ValidateValue(xpath, reaction, value);
}
}
private static void ValidateValue(Expression xpath, FailureReaction reaction, string returnValue)
{
if (reaction == FailureReaction.GenerateErrorOnNull && returnValue == null ||
(reaction == FailureReaction.GenerateErrorOnEmpty && (returnValue == null || returnValue.Length == 0)))
{
throw new Exception(string.Format("Could not find a value at the XPath({0})", xpath.ToString(true)));
}
}
/// <summary>
/// Get a string value from the document
/// </summary>
/// <param name="xpath"></param>
/// <returns></returns>
public string GetValue(Expression xpath, FailureReaction reaction)
{
XmlNode node = this._document.SelectSingleNode(xpath.ToString(true), this._namespaces);
string returnValue = null;
if (node != null)
{
if (xpath.IsAttribute)
{
returnValue = node.Value;
}
else
{
returnValue = node.InnerText;
}
}
ValidateValue(xpath, reaction, returnValue);
return(returnValue);
}
/// <summary>
/// Get all string values that match the given xpath from the document
/// </summary>
/// <param name="xpath"></param>
/// <returns></returns>
public string[] GetValues(Expression xpath, FailureReaction reaction)
{
XmlNodeList nodeList = this._document.SelectNodes(xpath.ToString(true), this._namespaces);
List <string> returnValues = new List <string>();
if (nodeList != null)
{
foreach (XmlNode node in nodeList)
{
if (xpath.IsAttribute)
{
returnValues.Add(node.Value);
}
else
{
returnValues.Add(node.InnerText);
}
}
}
ValidateValues(xpath, reaction, returnValues);
return(returnValues.ToArray());
}
/// <summary>
/// Get a string value from the document
/// </summary>
/// <param name="xpath"></param>
/// <returns></returns>
public string GetValue(string xpath, FailureReaction reaction)
{
return(this.GetValue(new Expression(xpath), reaction));
}
