Using static methods? [closed]

I am working on a ASP.NET web application and there was recently a need to dynamically generate columns.

I created a static class ColumnBuilder.cs, which takes in an entity and returns an appropriate control such as DropdownList, TextBox, Checkboxes, etc. All of the methods are static and work fine.

1. Will there be any performance impact if I use static methods?
2. Will there be any unexpected behavior for using static methods?

For example: if the ColumnBuilder is being used by a lot of people (> 10000). If yes, how do I go about solving this?

public static class ColumnBuilder
{
     public static WebControl BuildColumn(ColumnEntity columnObject)
     {
          switch(columnObject.DataType)
          {
              case "TextBox"://return a new textbox
                        break;
              case "DropdownList"://return a new DropdownList
                        break;
          }
     }
}