Pass values of checkBox to controller action in asp.net mvc4
I want to test if the checkbox is checked or not from my acion methon, what i need is to pass checkbox value from view to controller
this is my view
@using (Html.BeginForm("Index", "Graphe"))
{
<table style="width: 100%;" border="1">
<tbody>
<tr>
<td>Responsable:</td>
<td><select id="Responsables" name="responsables" ><option>Selectionnez --</option></select></td>
<td><input id="responsable" name="checkResp" type="checkbox" /> </td>
</tr>
<tr> <td><input type="submit" value="Afficher" id="ButtonSubmit"/></td>
<td><input class="button" id="ButtonReset" type="button" value="Annuler" /></td>
</tr>
</tbody>
and i try that :
public ActionResult Index( string responsables, bool checkResp)
{
Highcharts chart = new Highcharts("chart");
if (responsables != null)
{
if (checkResp)
chart = Global();
else
chart = Resp(responsables);
}
else
chart = Global();
return View(chart);
}
, but i have this error :
Le dictionnaire de paramètres contient une entrée Null pour le paramètre « checkAct » de type non Nullable « System.Boolean » pour la méthode « System.Web.Mvc.ActionResult Index(System.String, System.String, Boolean) » dans « Project.Controllers.GrapheController ». Un paramètre facultatif doit être un type référence, un type Nullable ou être déclaré en tant que paramètre facultatif. Nom du paramètre : parameters
Can you help me please !
If a checkbox is checked, then the postback values will contain a key-value pair of the form [InputName]=[InputValue]
If a checkbox is not checked, then the posted form contains no reference to the checkbox at all.
Knowing this, the following will work:
In the markup code:
<input id="responsable" name="checkResp" value="true" type="checkbox" />
And your action method signature:
public ActionResult Index( string responsables, bool checkResp = false)
This will work because when the checkbox is checked, the postback will contain checkResp=true , and if the checkbox is not checked the parameter will default to false.
For some reason Andrew method of creating the checkbox by hand didn't work for me using Mvc 5. Instead I used this
@Html.CheckBox("checkResp")
to create a checkbox that would play nice with the controller.
尝试使用表单集合
<input id="responsable" value="True" name="checkResp" type="checkbox" />
[HttpPost]
public ActionResult Index(FormCollection collection)
{
if(!string.IsNullOrEmpty(collection["checkResp"])
{
string checkResp=collection["checkResp"];
bool checkRespB=Convert.ToBoolean(checkResp);
}
}