void isType(EncodedTextWriter writer, BlockHelperOptions options, Context context, Arguments arguments)
{
Type[] expectedType;
var strType = (string)arguments[1];
switch (strType)
{
case "IEnumerable<string>":
expectedType = new[] { typeof(IEnumerable <string>) };
break;
case "IEnumerable<KeyValuePair<string, string>>":
expectedType = new[] { typeof(IEnumerable <KeyValuePair <string, string> >) };
break;
default:
throw new ArgumentException("Invalid type: " + strType);
}
var t = arguments[0]?.GetType();
if (expectedType.Any(x => x.IsAssignableFrom(t)))
{
options.Template(writer, context);
}
else
{
options.Inverse(writer, context);
}
}
void footer(EncodedTextWriter writer, BlockHelperOptions options, Context context, Arguments arguments)
{
IDictionary <string, object> viewBag = context["ViewBag"] as IDictionary <string, object>;
if (viewBag.TryGetValue("ShowFooter", out var show) && (bool)show == true)
{
options.Template(writer, (object)context);
}
}
void eachPair(EncodedTextWriter writer, BlockHelperOptions options, Context context, Arguments arguments)
{
void OutputElements <T>()
{
if (arguments[0] is IEnumerable <T> pairs)
{
foreach (var item in pairs)
{
options.Template(writer, item);
}
}
}
OutputElements <KeyValuePair <string, string> >();
OutputElements <KeyValuePair <string, object> >();
}
void eachItems(EncodedTextWriter writer, BlockHelperOptions options, Context context, Arguments arguments)
{
eachPair(writer, options, context, ((dynamic)arguments[0]).GetItems());
}
