Icon color change in mvc 4 controller.

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ASP.NET

MVC

bootstrap

In my asp .net mvc 4 project I need to change the color of Icon. Default I give is green. For certain conditions I need to change the color. This code is Used in controller. No view is used.

Here is my code,

string ClassName = "icon-message";
                    sb.Append("<table>");
                    foreach (var user in notific_list)
                    {
                        if (user.Notify_Act_Type == 174) //
                        {
                            ClassName = "icon-time";
                        }
                        else if (user.Notify_Act_Type == 175)
                        {
                            ClassName = "glyphicon glyphicon-credit-card";
                        }
                        else if (user.Notify_Act_Type == 176)
                        {
                            ClassName = "icon-plane";
                        }
                        else if (user.Notify_Act_Type == 177)
                        {
                            ClassName = "icon-inbox";
                        }
                        else if (user.Notify_Act_Type == 178)
                        {
                            ClassName = "icon-remove-sign";
                        }
                        sb.Append("<tr>");
                        sb.Append("<td>");
                        sb.Append("<span class=\""+ClassName+"\" style=\"color: green; font-size: 15px\"></span>");
                        sb.Append("</td>");