How to create a comment text box using Razor syntax and an HTML helper in an ASP.NET MVC application

To create a comment text box using Razor syntax and an HTML helper in an ASP.NET MVC application, you can use the Html.TextAreaFor method. This method generates an HTML <textarea> element that is bound to a model property.

Here is an example of how you could use Html.TextAreaFor to create a comment text box in a Razor view:

@using (Html.BeginForm())
{
    @Html.TextAreaFor(model => model.Comment, new { @class = "form-control", placeholder = "Enter your comment here" })
    <input type="submit" value="Submit" class="btn btn-primary" />
}

In this example, the Html.TextAreaFor method is used to generate a <textarea> element that is bound to the Comment property of the model. The new { @class = "form-control", placeholder = "Enter your comment here" } part specifies additional HTML attributes for the <textarea> element, such as the class and placeholder attributes.

You can customize the appearance and behavior of the comment text box by specifying different values for these attributes, or by adding additional HTML attributes as needed.

Note that this example assumes that you have already defined the Comment property in your model class and that it is correctly decorated with the appropriate data annotations.