Help with c# and bool on asp.net mvc

Question

Whats the best way to print out "Yes" or "No" depending on a value

In my view I want to print out

Model.isStudent

and I dont want True or False, I want Yes or No.... do I Have to write if else statement?

Darin Dimitrov · Accepted Answer · 2010-02-03 14:48:26Z

11

Write a helper method:

public static class MyExtensions
{
    public static string FormatBool(this HtmlHelper html, bool value)
    {
        return html.Encode(value ? "Yes" : "No");
    }
}

And use it like this:

<%= Html.FormatBool(Model.IsStudent) %>

answered Feb 3, 2010 at 14:48

Darin Dimitrov

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Comments

jrotello · Accepted Answer · 2010-02-03 14:58:35Z

6

How about an extension method on bool:

public static class BoolExtensions {
    public static string ToYesNo(this bool value) {
        return value ? "Yes": "No";
    }
}

Usage would be:

Model.isStudent.ToYesNo();

edited Feb 3, 2010 at 14:58

answered Feb 3, 2010 at 14:49

jrotello

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Oracular Man · Accepted Answer · 2013-03-23 20:53:52Z

4

MVC 4: This example shows in detail the implementation of boolean templates for a dropdownlist that contains Yes, No and Not Set values and also handles null bool values. Inspired from Darin Dimitrov and Jorge - Thank you.

Model Student.cs

[Display(Name = "Present:")]
[UIHint("YesNo")]
public bool? IsPresent { get; set; }

DisplayTemplates: YesNo.cshtml

@model Nullable<bool>

@if (Model.HasValue)
{
    if (Model.Value)
        { <text>Yes</text> }
    else
        { <text>No</text> }
}
else
    { <text>Not Set</text> }

EditorTemplates: YesNo.cshtml

@model Nullable<bool>

@{
    var listItems = new[]
    {   
        new SelectListItem { Value = "null", Text = "Not Set" },
        new SelectListItem { Value = "true", Text = "Yes" },
        new SelectListItem { Value = "false", Text = "No" }
    };  
}

@if (ViewData.ModelMetadata.IsNullableValueType)
{
    @Html.DropDownList("", new SelectList(listItems, "Value", "Text", Model))
}
else
{
    @Html.CheckBox("", Model.Value)
}

View:

  <div class="editor-label">
        @Html.LabelFor(model => model.IsPresent )
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.IsPresent )
        @Html.ValidationMessageFor(model => model.IsPresent )
    </div>

answered Mar 23, 2013 at 20:53

Oracular Man

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1 Comment

Carter Medlin Over a year ago

Side note : If you want to yes/no all your bools without using the UIHint, name the template files boolean.cshtml

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