W jaki sposób formksomponent można wyliczyć w ASP.NET MVC?

Question

Jak wyliczyć wszystkie klucze/wartości a FormCollection (system.web.mvc) w ASP.NET MVC?

Answer 1

Oto 3 sposoby, aby zrobić to konkretnie z obiektem FormCollection.

public ActionResult SomeActionMethod(FormCollection formCollection) 
{ 
    foreach (var key in formCollection.AllKeys) 
    { 
    var value = formCollection[key]; 
    } 

    foreach (var key in formCollection.Keys) 
    { 
    var value = formCollection[key.ToString()]; 
    } 

    // Using the ValueProvider 
    var valueProvider = formCollection.ToValueProvider(); 
    foreach (var key in valueProvider.Keys) 
    { 
    var value = valueProvider[key]; 
    } 
} 

Answer 2

foreach(var key in Request.Form.AllKeys) 
{ 
    var value = Request.Form[key]; 
} 

Answer 3

foreach(KeyValuePair<string, ValueProviderResult> kvp in form.ToValueProvider()) 
{ 
    string htmlControlName = kvp.Key; 
    string htmlControlValue = kvp.Value.AttemptedValue; 
} 

Answer 4

I w Vb.NET:

Dim fv As KeyValuePair(Of String, ValueProviderResult) 
For Each fv In formValues.ToValueProvider 
    Response.Write(fv.Key + ": " + fv.Value.AttemptedValue) 
Next 

Answer 5

Używam tego:

string keyname; 
string keyvalue; 

for (int i = 0; i <= fc.Count - 1; i++) 
{ 
    keyname = fc.AllKeys[i]; 
    keyvalue = fc[i]; 
} 

nadzieję, że ktoś pomoże.

Answer 6

w .NET Framework 4.0, kod do korzystania z ValueProvider jest:

 IValueProvider valueProvider = formValues.ToValueProvider(); 
     foreach (string key in formValues.Keys) 
     { 
      ValueProviderResult result = valueProvider.GetValue(key); 
      string value = result.AttemptedValue; 
     }