Dynamic Control generation base on model value in MVC4

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In my database, i have a column called control_id which consists value like 1,2,3,4. Based on this value, i have to generate controls like Text box, Dropdownlist and Check box. (For example, if my control_id is 1, has to generate Text box, and for 2, dropdownlist and so on) I am completely new to MVC. Can anyone point me in right direction to implement this scenario?

Posted 28-Oct-14 21:17pm

Member 11174491

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Samer Aburabie · Answer 1 · 2014-10-28T21:44:00

Solution 1

When returning the data to the your View you can use razor syntax on the view to generate the specific control you want

YourView.cshtml

@model YourViewModel
...
...
...

@if(Model.YourControlId == 1){
   @Html.TextboxFor(x=>x.YourPropertyBinding)
}
else if(Model.YourControlId == 2){
   @Html.DropDownListFor(x=> x.YourPropertyBinding, listOfData)
}
else if(Model.YourControlId == 3){
   .....
}

Posted 28-Oct-14 21:44pm

Samer Aburabie

Updated 28-Oct-14 22:24pm

v3

Comments

Member 11174491 29-Oct-14 4:19am

Hi, Thank you for your response. I already tried this way, but it is throwing below error

"CS1061: 'System.Web.Mvc.HtmlHelper<mvcdemo.models.profile>' does not contain a definition for 'DropDownlistFor' and no extension method 'DropDownlistFor' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<mvcdemo.models.profile>' could be found (are you missing a using directive or an assembly reference?)"

Can you please correct me in what place i am doing mistake?

I post my code here:

@model mvcdemo.Models.profile

@{
ViewBag.Title = "dynamicdisplay";
}

@if(Model.control_id == 1){
@Html.TextBoxFor(x=>x.profile_filed)
}
else if(Model.control_id == 2){
@Html.DropDownlistFor(x=> x.profile_filed,"select")
}
else if(Model.control_id == 3){
@Html.CheckBoxFor(x=> x.profile_filed)

}

Samer Aburabie 29-Oct-14 4:23am

My friend .. my code might have typos .. I am posting code you need to check on the IDE you are using, so you will be able to understand before applying it.

I suspect that DropDowlistFor should be DropDownListFor (capital l for list) and you need to pass the list of data to this method too, I am pointing the general idea here since I dont know your data source and didn't see your code.

Member 11174491 29-Oct-14 8:06am

Hi, Thank you for pointing out me the mistake.

I tried below code:

@if(Model.control_id == 1){
@Html.TextBoxFor(x=>x.profile_filed)
}
else if(Model.control_id == 2){
@Html.DropDownListFor(x=> x.profile_filed,@ViewBag.control as SelectList,"select")
}
else if (Model.control_id == 3)
{
@Html.CheckBoxFor(x => x.isselected)
@Html.DisplayFor(x => x.profile_filed)

}

Now, I am getting NullReferenceException.