How do I specify the columns and rows of a multiline Editor-For in ASP.MVC?

Use TextAreaFor

@Html.TextAreaFor(model => model.Description, new { @class = "whatever-class", @cols = 80, @rows = 10 })

or use style for multi-line class.

You could also write EditorTemplate for this.

In ASP.NET MVC 5 you could use the [DataType(DataType.MultilineText)] attribute. It will render a TextArea tag.

public class MyModel
{
    [DataType(DataType.MultilineText)]
    public string MyField { get; set; }
}

Then in the view if you need to specify the rows you can do it like this:

@Html.EditorFor(model => model.MyField, new { htmlAttributes = new { rows = 10 } })

Or just use the TextAreaFor with the right overload:

@Html.TextAreaFor(model => model.MyField, 10, 20, null)

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