using Enum for dropdownlist in databasefirst mvc

Question

I have a field in Model(tablaMetadata) with boolian field for gender as below: (I work with database first MVC)

 [DisplayName("gender")]
 [Display(Name = "gender")]
 public Nullable<bool> EmpSex { get; set; }

I want to get value from EmpSex as "Male" or "Female" by dropdownlist , then convert it to boolean (for posting form to database). I define Enum as below:

public enum gender
{
    Male=1,
    Female=0
}

I don't Know How can I use htmlhelper for Enumdropdownlist and convert string value of dropdownlist to boolean. Can you help me to define dropdownlist for Enum and converting values?

Nitesh Kumar · Accepted Answer · 2017-12-12 13:40:58Z

2

In your view you can create the dropdown like this

Create the list from enum like this

@{ 
    var genderList = Enum.GetValues(typeof(Gender)).OfType<Gender>().Select(m => new { Text = m.ToString(), Value = (int)m }).ToList(); 
}

and create the DropDown like this

@Html.DropDownList("EmpSex", new SelectList(genderList, "Value", "Text", Model.EmpSex))

or

@Html.DropDownListFor(model => model.EmpSex, new SelectList(genderList, "Value", "Text", Model.EmpSex))

answered Dec 12, 2017 at 13:40

Nitesh Kumar

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6 Comments

L Bar Over a year ago

it's Ok, but I want to set a css class for dropdownlist. I change your code in this form: @Html.DropDownListFor(model => model.Employees.EmpSex, new SelectList( genderList, "Value", "Text",new { @class = "form-control1 select2 ", style="width:100 %;" })). but class dosn't apply. is it correct?

Nitesh Kumar Over a year ago

SO, you can add CSS by adding one more parameter in DropDownList , new { @class = "yourCSS" }

Nitesh Kumar Over a year ago

the correct code is

@Html.DropDownListFor(model => model.EmpSex, new SelectList(genderList, "Value", "Text", "----"), new { @class = "yourCSS" })

L Bar Over a year ago

I use these commands of Enum for "int" field in sql and it was correct, but I use it for " bit " field in sql and I encounter to validation error message. can you tell me which property must be changed? I can't change " int" to " bit".

Nitesh Kumar Over a year ago

You can try changing the definition of enum like public enum gender : byte.

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