private MvcTag TagHelper(HtmlTextWriterTag htmlTag, string name, string errorClass = "invalid", IDictionary <string, object> htmlAttributes = null)
{
// tag
MvcTag tag = new MvcTag(ViewContext, htmlTag);
// attributes
if (htmlAttributes != null)
{
tag.Builder.MergeAttributes(htmlAttributes);
}
// add the name if a form element
if (new HtmlTextWriterTag[3] {
HtmlTextWriterTag.Textarea, HtmlTextWriterTag.Input, HtmlTextWriterTag.Select
}.Contains(htmlTag))
{
tag.Builder.Attributes.Add("name", name);
}
// model state error check
if (!string.IsNullOrEmpty(errorClass))
{
ModelState state = GetState(ViewContext, name);
if (state != null && state.Errors.Count > 0)
{
tag.Builder.AddCssClass("invalid");
}
}
// output to writer
ViewContext.Writer.Write(tag.Builder.ToString(TagRenderMode.StartTag));
// return tag
return(tag);
}
/// <summary>
/// Returns date select options dd/mm/yyyy
/// </summary>
/// <param name="format"></param>
/// <param name="prefix"></param>
/// <returns></returns>
public MvcHtmlString Date(DateFormat format, string prefix = null)
{
DateTime now = DateTime.Now;
StringBuilder options = new StringBuilder();
string optionFormat = "<option value=\"{0}\" {1}>{2}</option>";
string selected = "selected=\"selected\"";
bool havePrefix = !string.IsNullOrEmpty(prefix);
// container
using (MvcTag container = new MvcTag(ViewContext, HtmlTextWriterTag.Div))
{
container.Builder.Attributes["class"] = "dates";
// day
if (format.HasFlag(DateFormat.Day))
{
using (MvcTag day = new MvcTag(ViewContext, HtmlTextWriterTag.Select))
{
day.Builder.Attributes["name"] = string.Concat(prefix, havePrefix ? "_" : string.Empty, "day");
for (var i = 1; i < 32; i++)
{
options.AppendFormat(optionFormat, i, i == now.Day ? selected : string.Empty, i);
}
day.Builder.InnerHtml = options.ToString();
container.AddChildTag(day);
options.Clear();
}
}
// month
if (format.HasFlag(DateFormat.Month))
{
using (MvcTag month = new MvcTag(ViewContext, HtmlTextWriterTag.Select))
{
month.Builder.Attributes["name"] = string.Concat(prefix, havePrefix ? "_" : string.Empty, "month");
for (var i = 1; i < 13; i++)
{
options.AppendFormat(optionFormat, i, i == now.Month ? selected : string.Empty, CultureInfo.CurrentCulture.DateTimeFormat.GetAbbreviatedMonthName(i));
}
month.Builder.InnerHtml = options.ToString();
container.AddChildTag(month);
options.Clear();
}
}
// year
if (format.HasFlag(DateFormat.Month))
{
using (MvcTag year = new MvcTag(ViewContext, HtmlTextWriterTag.Select))
{
year.Builder.Attributes["name"] = string.Concat(prefix, havePrefix ? "_" : string.Empty, "year");
int yearStart = now.Year - 100;
int yearEnd = now.Year + 10;
for (var i = yearEnd; i > yearStart; i--)
{
options.AppendFormat(optionFormat, i, i == now.Year ? selected : string.Empty, i);
}
year.Builder.InnerHtml = options.ToString();
container.AddChildTag(year);
}
}
// return container
return(new MvcHtmlString(container.Builder.ToString()));
}
}
