/// <summary>
/// Return attribute value if attribute <paramref name="attrName"/>
/// exist, on <paramref name="defaultValue"/> if not exist.
/// </summary>
/// <param name="elem"></param>
/// <param name="attrName"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public static string GetAttr(this XmlElement elem, string attrName, string defaultValue = null)
{
Expect.IsNotNull(elem, nameof(elem));
Expect.IsNotBlank(attrName, nameof(attrName));
return(elem.HasAttribute(attrName) ? elem.Attributes[attrName].Value
: defaultValue);
}
/// <summary>
/// Set attribute in fluent mode
/// </summary>
/// <param name="elem"></param>
/// <param name="attrName"></param>
/// <param name="value"></param>
/// <returns></returns>
public static XmlElement SetAttr(this XmlElement elem, string attrName, string value)
{
Expect.IsNotNull(elem, nameof(elem));
Expect.IsNotBlank(attrName, nameof(attrName));
elem.SetAttribute(attrName, value);
return(elem);
}
/// <summary>
/// Create child element
/// </summary>
/// <param name="parent">Parent element</param>
/// <param name="name">Name of child element</param>
/// <param name="xmlns">Child namespace</param>
/// <returns></returns>
public static XmlElement AppendElement(this XmlElement parent, string name, string xmlns = null)
{
Expect.IsNotNull(parent, nameof(parent));
Expect.IsNotBlank(name, nameof(name));
var elem = (xmlns != null) ? parent.OwnerDocument.CreateElement(name, xmlns)
: parent.OwnerDocument.CreateElement(name);
parent.AppendChild(elem);
return(elem);
}
/// <summary>
/// Append exception detail to log file.
/// </summary>
/// <param name="exp">Exception to log</param>
/// <param name="logPath">Log file path. </param>
public static void LogToFile(this Exception exp, string logPath)
{
Expect.IsNotNull(exp, nameof(exp));
Expect.IsNotBlank(logPath, nameof(logPath));
try
{
File.AppendAllText(logPath, exp.GetFullTrace(), Encoding.UTF8);
}
catch (Exception inner)
{
Debug.WriteLine(inner.Message);
Debug.WriteLine(inner.StackTrace);
}
}
