public static object GetParameter(IDictionary <string, object> parameters, string name, bool isRequired = true)
{
if (parameters == null)
{
throw new ArgumentNullException("parameters");
}
else if (name == null)
{
throw new ArgumentNullException("name");
}
else if (name.Length == 0)
{
throw CloudExtensions.CreateArgumentEmptyException("name");
}
object value = null;
if (!parameters.TryGetValue(name, out value) && isRequired)
{
throw new InvalidOperationException(
string.Format(
CultureInfo.InvariantCulture,
Properties.Resources.ConfigurationHelper_GetParameter_NotFound,
name));
}
return(value);
}
public static string LookupSetting(IEnumerable <Func <string, string> > configurationSources, string name)
{
if (configurationSources == null)
{
throw new ArgumentNullException("configurationSources");
}
else if (name == null)
{
throw new ArgumentNullException("name");
}
else if (name.Length == 0)
{
throw CloudExtensions.CreateArgumentEmptyException("name");
}
foreach (Func <string, string> getSettingFromSource in configurationSources)
{
string setting = getSettingFromSource(name);
if (setting != null)
{
return(setting);
}
}
return(null);
}
public static Exception CreateCouldNotConvertException <T>(string name, object value)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
else if (name.Length == 0)
{
throw CloudExtensions.CreateArgumentEmptyException("name");
}
string message =
string.Format(
CultureInfo.InvariantCulture,
"Failed to convert parameter {0} value '{1}' to type {2}.",
name,
value == null ? "(null)" : value.ToString(),
typeof(T).FullName);
return(new FormatException(message));
}
