/// <summary>
/// 列表控件（无限极）
/// </summary>
/// <param name="htmlHelper"></param>
/// <param name="source">绑定数据源</param>
/// <param name="option">选项</param>
/// <param name="name"></param>
/// <param name="selValue">选中值</param>
/// <returns></returns>
public static MvcHtmlString DropDownListEx(this System.Web.Mvc.HtmlHelper htmlHelper,
string name,
IList <SelectListItem> source,
DropDownListOption option,
string selValue = null,
object htmlAttributes = null
)
{
var attrs = ((IDictionary <string, object>) new RouteValueDictionary(htmlAttributes));
if (!string.IsNullOrEmpty(option.Description))
{
attrs.Add("description", option.Description);
}
if (!string.IsNullOrEmpty(option.FocusMsg))
{
attrs.Add("focusMsg", option.FocusMsg);
}
if (option.IsRequired)
{
attrs.Add("isEmpty", "false");
if (!string.IsNullOrEmpty(option.EmptyMsg))
{
attrs.Add("emptyMsg", option.EmptyMsg);
}
else
{
attrs.Add("emptyMsg", "请选择选项");
}
}
else
{
attrs.Add("isEmpty", "true");
}
attrs.Add("validator", "true");
return(htmlHelper.DropDownList(ExpressionHelper.GetExpressionText(name), source, attrs));
}
public static System.Web.IHtmlString DtxLabelAndDropDownListFor <TModel, TValue>
(this System.Web.Mvc.HtmlHelper <TModel> html,
System.Linq.Expressions.Expression <System.Func <TModel, TValue> > expression,
int labelColumn = 3, bool readOnly = false,
//bool leftToRight = false,
string optionLabel = null)
{
string result = string.Empty;
// **************************************************
string cssClass = "form-control";
//if (leftToRight)
//{
// cssClass =
// string.Format("{0} ltr", cssClass);
//}
// **************************************************
result += "<div class=\"form-group\">";
result +=
DtxLabelFor(html: html, expression: expression, column: labelColumn);
result +=
$"<div class=\"col-sm-{ 12 - labelColumn }\">";
// **************************************************
System.Web.Mvc.ModelMetadata modelMetadata =
System.Web.Mvc.ModelMetadata.FromLambdaExpression(expression, html.ViewData);
string htmlFieldName =
System.Web.Mvc.ExpressionHelper.GetExpressionText(expression);
// **************************************************
// **************************************************
object htmlAttributes = null;
if (readOnly)
{
optionLabel = null;
// TODO: تست شود که کدامیک از دو دستور مناسب است
//htmlAttributes =
// new { @class = cssClass, disabled = "disabled" };
// TODO: تست شود که کدامیک از دو دستور مناسب است
htmlAttributes =
new { @class = cssClass, @readonly = "readonly" };
}
else
{
if (modelMetadata.IsRequired == false)
{
if (optionLabel == null)
{
optionLabel =
Resources.Messages.YouCanSelectAnItem;
}
htmlAttributes = new { @class = cssClass };
}
else
{
if (optionLabel == null)
{
optionLabel =
Resources.Messages.YouShouldSelectAnItem;
}
// **************************************************
string errorMessage =
Resources.Messages.RequiredValidationErrorMessage;
string displayName =
modelMetadata.DisplayName ??
modelMetadata.PropertyName ??
htmlFieldName.Split('.').Last();
if (string.IsNullOrWhiteSpace(displayName) == false)
{
errorMessage =
string.Format(Resources.Messages.RequiredValidationErrorMessage, displayName);
}
// **************************************************
htmlAttributes =
new { @class = cssClass, data_val = "true", data_val_required = errorMessage };
}
}
// **************************************************
string dropDownList =
html.DropDownList
(name: htmlFieldName, selectList: null, optionLabel: optionLabel, htmlAttributes: htmlAttributes)
.ToHtmlString();
result += dropDownList;
var validationHtmlAttributes =
new { @class = "text-danger" };
string validationMessageFor =
html.ValidationMessageFor(expression: expression, validationMessage: string.Empty, htmlAttributes: validationHtmlAttributes)
.ToHtmlString();
result += validationMessageFor;
result += "</div>";
result += "</div>";
return(html.Raw(result));
}
