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在這裏,我試圖讓與雙輸入框雙輸入MVC擴展
返回模型的屬性是空的擴展, 他們沒有正確綁定或這裏還有另外一個問題, 請幫我寫這個擴展名並利用它。 我需要在我的代碼中使用它數千次。
public static class DoubleBoxHelper
{
public static MvcHtmlString DoubleBoxFor<TModel, TProperty>(
this HtmlHelper<TModel> htmlHelper,
//int id,
Expression<Func<TModel, TProperty>> expression)
{
var builder = new StringBuilder();
var metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
var model = metadata.Model as DoubleNumber;
var name = ExpressionHelper.GetExpressionText(expression);
var fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
var fieldId = TagBuilder.CreateSanitizedId(fullName);
// 1st TextBox
var tagInputLeft = new TagBuilder("input");
tagInputLeft.Attributes.Add("name", fullName);
tagInputLeft.Attributes.Add("id", fieldId + 1);
tagInputLeft.Attributes.Add("type", "text");
tagInputLeft.Attributes.Add("value", model.Num1 == null ? "" : model.Num1.ToString());
// 2nd TextBox
var tagInputRight = new TagBuilder("input");
tagInputRight.Attributes.Add("name", fullName);
tagInputRight.Attributes.Add("id", fieldId + 2);
tagInputRight.Attributes.Add("type", "text");
tagInputRight.Attributes.Add("value", model.Num2 == null ? "" : model.Num2.ToString());
builder.Append(tagInputLeft.ToString(TagRenderMode.SelfClosing));
builder.Append(tagInputLeft.ToString(TagRenderMode.SelfClosing));
return new MvcHtmlString(builder.ToString());
}
}
Model類
public class DoubleNumber
{
public int Num1 { get; set; } // tried strings but again they are null
public int Num2 { get; set; }
}
,這裏是我們需要輸入的數字控制器 - 後動作
[HttpPost]
public ActionResult Index(DoubleNumber g)
{
int iNum1 = g.Num1; // int or string doesn't matter, it couldn't get the entered(modified) model
int iNum2 = g.Num2;
var vm = ViewModelOf(g);
return View(vm);
}
如果任何人還可以提及如何使用類似這樣的東西:「htmlHelper.TextBoxFor(表達式」在我的字符串生成器中,我可以通過我的目標我的模型的所需屬性這可能是一個很大的幫助。 – LastBye