Having a little bit of trouble figuring out using a ternary with Razor view engine.
My model has a string property. If that string property is null, I want to render null in the view. If the property is not null, I want it to render the property value with a leading and trailing '.
How can I do this?
UPDATE: Sorry, changed question slightly.
You should just be able to use a ternary operator like the title suggests:
@(string.IsNullOrEmpty(Model.Prop) ? "null" : "'" + Model.Prop + "'")
Assume you have an entity named Test with the First and Last properties:
public class Test {
public string First { get; set; }
public string Last { get; set; }
}
You can use DisplayFormat.DataFormatString and DisplayFormat.NullDisplayText to achieve your purpose:
public class Test {
[Display(Name = "First Name")]
[DisplayFormat(DataFormatString = "'{0}'", NullDisplayText = "'null'")]
public string First { get; set; }
[Display(Name = "Last Name")]
[DisplayFormat(DataFormatString = "'{0}'", NullDisplayText = "'null'")]
public string Last { get; set; }
}
AND in view:
@Html.DisplayFor(model => model.First)
@Html.DisplayFor(model => model.Last)
I change the answer too:
[DisplayFormat(DataFormatString = "'{0}'", NullDisplayText = "null")]
Ternary, loops, C# and stuff makes views ugly.
That's what view models are exactly designed to do:
public class MyViewModel
{
[DisplayFormat(NullDisplayText = "null", DataFormatString = "'{0}'"]
public string MyProperty { get; set; }
}
and then in your strongly typed view simply:
@model MyViewModel
...
@Html.DisplayFor(x => x.MyProperty)
