Razor vs C#

C#

namespace Sitecore.Web.UI.Controls.Common.Texts
{
  using System.Web.UI;
  using Sitecore.Diagnostics;
  using Sitecore.Mvc.Presentation;

  /// <summary>
  /// The type of text.
  /// </summary>
  public enum TextType
  {
    /// <summary>The text.</summary>
    Text, 

    /// <summary>The label.</summary>
    Label,

    /// <summary>The help label value.</summary>
    HelpLabel,

    /// <summary>The large label value.</summary>
    LargeLabel, 

    /// <summary>The value.</summary>
    Value, 

    /// <summary>The large value.</summary>
    LargeValue, 

    /// <summary>The large title.</summary>
    LargeTitle, 

    /// <summary>The title.</summary>
    Title, 

    /// <summary>The small title.</summary>
    SmallTitle, 

    /// <summary>The divider.</summary>
    Divider
  }

  /// <summary>
  /// The text control.
  /// </summary>
  public class Text : ControlBase
  {
    #region Constants

    /// <summary>
    /// The default data bind field.
    /// </summary>
    private const string DefaultDataBind = "text: text, visible: isVisible";

    #endregion

    #region Constructors

    /// <summary>
    /// Initializes a new instance of the <see cref="Text"/> class.
    /// </summary>
    public Text()
    {
      this.Class = "sc-text";
      this.DataBind = DefaultDataBind;
      this.Requires.Script(RequireCollection.BusinessLibraryCategory, "text.js");
   }

    /// <summary>Initializes a new instance of the <see cref="Text"/> class.</summary>
    /// <param name="parametersResolver">The parameters resolver.</param>
    public Text([NotNull] RenderingParametersResolver parametersResolver) : base(parametersResolver)
    {
      Assert.ArgumentNotNull(parametersResolver, "parametersResolver");

      this.Class = "sc-text";
      this.DataBind = DefaultDataBind;
      this.Requires.Script(RequireCollection.BusinessLibraryCategory, "text.js");

      this.Content = parametersResolver.GetString("Text", "text");
      this.TextType = parametersResolver.GetEnum("TextType", TextType.Text);
      this.FieldName = parametersResolver.GetString("FieldName");

      this.ContentBinding = parametersResolver.GetString("TextBinding");
    }

    #endregion

    #region Public Properties

    #region Public properties

    /// <summary>
    /// Gets or sets the content.
    /// </summary>
    [CanBeNull]
    public string Content { get; set; }

    /// <summary>
    /// Gets or sets the name of the field.
    /// </summary>
    /// <value>The name of the field.</value>
    [CanBeNull]
    public string FieldName { get; set; }

    /// <summary>
    /// Gets or sets the type of the text.
    /// </summary>
    /// <value>The type of the text.</value>
    public TextType TextType { get; set; }

    #endregion

    #region Protected properties

    /// <summary>
    /// Gets or sets the text binding.
    /// </summary>
    [CanBeNull]
    protected string ContentBinding { get; set; }

    #endregion

    #endregion

    #region Methods

    /// <summary>
    /// Called after the control object is created.
    /// </summary>
    protected override void PreRender()
    {
      base.PreRender();

      if (!string.IsNullOrEmpty(this.ContentBinding))
      {
        this.AddBinding("text", this.ContentBinding);
      }

      switch (this.TextType)
      {
        case TextType.Label:
          this.AppendClass("sc-text-label");
          break;
        case TextType.HelpLabel:
          this.AppendClass("sc-text-helplabel");
          break;
        case TextType.LargeLabel:
          this.AppendClass("sc-text-largelabel");
          break;
        case TextType.Value:
          this.AppendClass("sc-text-value");
          break;
        case TextType.LargeValue:
          this.AppendClass("sc-text-largevalue");
          break;
        case TextType.LargeTitle:
          this.AppendClass("sc-text-largetitle");
          break;
        case TextType.Title:
          this.AppendClass("sc-text-title");
          break;
        case TextType.SmallTitle:
          this.AppendClass("sc-text-smalltitle");
          break;
        case TextType.Divider:
          this.AppendClass("sc-text-divider");
          break;
      }

      if (string.IsNullOrEmpty(this.FieldName))
      {
        return;
      }

      var item = this.GetDataSource();
      if (item == null)
      {
        return;
      }

      var text = item[this.FieldName];
      if (!string.IsNullOrEmpty(text))
      {
        this.Content = text;
      }
    }

    /// <summary>Renders the specified output.</summary>
    /// <param name="output">The output.</param>
    protected override void Render(HtmlTextWriter output)
    {
      Debug.ArgumentNotNull(output, "output");

      this.AddAttributes(output);

      output.RenderBeginTag(HtmlTextWriterTag.Span);

      if (!string.IsNullOrEmpty(this.Content))
      {
        output.WriteEncodedText(this.Content);
      }

      output.RenderEndTag();
    }

    #endregion
  }
}

Razor

@model Sitecore.BCL2.Client.Components.Common.Texts.TextRenderingModel
@{
  Model.Class.AppendIf(Model.TextType, string.Empty, "").
    AppendIf(Model.TextType, "Text", "").
    AppendIf(Model.TextType, "Label", "sc-text-label").
    AppendIf(Model.TextType, "HelpLabel", "sc-text-helplabel").
    AppendIf(Model.TextType, "LargeLabel", "sc-text-largelabel").
    AppendIf(Model.TextType, "Value", "sc-text-value").
    AppendIf(Model.TextType, "LargeValue", "sc-text-largevalue").
    AppendIf(Model.TextType, "Title", "sc-text-title").
    AppendIf(Model.TextType, "LargeTitle", "sc-text-largetitle").
    AppendIf(Model.TextType, "SmallTitle", "sc-text-smalltitle").
    AppendIf(Model.TextType, "Divider", "sc-text-divider");
  Model.NoScript();
  Model.DataBind.IsVisible().Text();
}
<span @Model.HtmlAttributes>@Model.Text</span>

I think Razor is the way to go for these sort of presentational concerns. Keep the C# code for business logic and the Razor view will be much cleaner.