public static MvcHtmlString DropDownForEnum <EnumType>(this HtmlHelper html, string name, EnumType?value, object htmlAttributes = null) where EnumType : struct
{
var type = typeof(EnumType);
if (!type.IsEnum)
{
throw new Exception("The member must be an Enum");
}
var builder = new TagBuilder("select");
builder.GenerateId(name);
builder.MergeAttribute("name", name);
foreach (var n in Enum.GetNames(type))
{
var title = TitleAttribute.GetTitle(type.GetField(n, BindingFlags.Public | BindingFlags.Static), n);
TagBuilder op = new TagBuilder("option");
var thisVal = (int)Enum.Parse(type, n);
op.Attributes["value"] = thisVal.ToString();
//if (value != null && (int)value.Value == thisVal)
// op.Attributes["selected"] = "selected";
op.SetInnerText(title);
builder.InnerHtml += op.ToString();
}
if (htmlAttributes != null)
{
foreach (var prop in htmlAttributes.GetType().GetProperties(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
{
builder.Attributes[prop.Name] = prop.GetValue(htmlAttributes, null).ToString();
}
}
return(MvcHtmlString.Create(builder.ToString()));
}
static void CreateEnumColumn <TContext, TEntity>(GridColumnFactory <TEntity> cols, KeyValuePair <PropertyInfo, Attribute[]> p) where TContext : CachableDbContext <TContext>, new()
where TEntity : class
{
List <KeyValuePair <int, string> > data = new List <KeyValuePair <int, string> >();
var values = Enum.GetValues(p.Key.PropertyType);
foreach (var v in values)
{
var name = Enum.GetName(p.Key.PropertyType, v);
var title = TitleAttribute.GetTitle(p.Key.PropertyType, name);
if (string.IsNullOrEmpty(title))
{
title = name;
}
data.Add(new KeyValuePair <int, string>((int)v, title));
}
var col = cols.ForeignKey(p.Key.Name, data, "Key", "Value");
SetColumnProperties(p.Key, p.Value, col);
}
public static MvcHtmlString DropDownForEnum <TModel, TProperty>(this HtmlHelper <TModel> html
, Expression <Func <TModel, TProperty> > expression, object htmlAttributes = null)
{
var memberInfo = expression.MemberInfo();
var type = ((PropertyInfo)memberInfo).PropertyType;
if (!type.IsEnum)
{
throw new Exception("The member must be an Enum");
}
var builder = new TagBuilder("select");
builder.GenerateId(memberInfo.Name);
builder.MergeAttribute("name", expression.MemberName());
object value = GetValue(html, expression);
foreach (var name in Enum.GetNames(type))
{
var title = TitleAttribute.GetTitle(type.GetField(name, BindingFlags.Public | BindingFlags.Static), name);
TagBuilder op = new TagBuilder("option");
var thisVal = (int)Enum.Parse(type, name);
op.Attributes["value"] = thisVal.ToString();
if (value != null && (int)value == thisVal)
{
op.Attributes["selected"] = "selected";
}
op.SetInnerText(title);
builder.InnerHtml += op.ToString();
}
if (htmlAttributes != null)
{
foreach (var prop in htmlAttributes.GetType().GetProperties(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
{
builder.Attributes[prop.Name] = prop.GetValue(htmlAttributes, null).ToString();
}
}
return(MvcHtmlString.Create(builder.ToString()));
}
static string GetTitle(ICustomAttributeProvider typeMember, string name = null, Type containingType = null)
{
return(TitleAttribute.GetTitle(typeMember, name, containingType));
}
