/// <summary>
/// return the attribute as an double, if attribute doesn't exist in the given xelement, or isn't a double, returns defaultValue (default of defaultValue is -1 :) ).
/// </summary>
/// <param name="el"></param>
/// <param name="attributeName">name of the attribute which value should be returned</param>
/// <param name="defaultValue">default value if attribute doesn't exist or it value isn't a double</param>
/// <param name="caseSensitive">is the name of the attribute case sensitive</param>
/// <returns></returns>
public static double AttributeAsDouble(this XElement el, string attributeName, double defaultValue = -1, bool caseSensitive = false)
{
if (el == null)
return defaultValue;
XAttribute xaFound = el.AttributeAsXAttribute(attributeName, caseSensitive);
double dReturn = defaultValue;
if (xaFound != null)
double.TryParse(xaFound.Value, out dReturn);
return dReturn;
}
/// <summary>
/// return the attribute as an int, if attribute doesn't exist in the given xelement, or isn't a integer, returns defaultValue (default of defaultValue is -1 :) ).
/// </summary>
/// <param name="el"></param>
/// <param name="attributeName">name of the attribute which value should be returned</param>
/// <param name="defaultValue">default value if attribute doesn't exist or it value isn't a integer</param>
/// <param name="caseSensitive">is the name of the attribute case sensitive</param>
/// <returns></returns>
public static int AttributeAsInteger(this XElement el, string attributeName, int defaultValue=-1, bool caseSensitive = false)
{
if (el == null)
return defaultValue;
XAttribute xaFound = el.AttributeAsXAttribute(attributeName, caseSensitive);
int iReturn = defaultValue;
if (xaFound != null)
int.TryParse(xaFound.Value, out iReturn);
return iReturn;
}
/// <summary>
/// return the attribute as an nullable double, if attribute doesn't exist in the given xelement, or isn't a double, returns defaultValue (default of defaultValue is null :) ).
/// </summary>
/// <param name="el"></param>
/// <param name="attributeName"></param>
/// <param name="defaultValue"></param>
/// <param name="caseSensitive"></param>
/// <returns></returns>
public static double? AttributeAsNullableDouble(this XElement el, string attributeName, double? defaultValue = null, bool caseSensitive = false)
{
if (el == null)
return null;
XAttribute xaFound = el.AttributeAsXAttribute(attributeName, caseSensitive);
double? dReturn = defaultValue;
double d;
if (xaFound != null)
if (double.TryParse(xaFound.Value, out d))
dReturn = d;
return dReturn;
}
/// <summary>
/// return the attribute as an string, if attribute doesn't exist in the given xelement return empty string "".
/// </summary>
/// <param name="el"></param>
/// <param name="attributeName">name of the attribute which value should be returned</param>
/// <param name="caseSensitive">is the name of the attribute case sensitive</param>
/// <returns></returns>
public static string AttributeAsString(this XElement el, string attributeName, bool caseSensitive = false)
{
if (el == null)
return "";
XAttribute xaFound = el.AttributeAsXAttribute(attributeName, caseSensitive);
if (xaFound == null)
return "";
else
return xaFound.Value;
}