step through C#.net

I with the code listed below, I would like to know:
a. How can I set through this code (debug)? The debugger does not step into this code?
b. i want to make changes to this code since some of hte column sizes are going to change. is there anything I need to do that is special so my coding changes will be saved?
c. When I want to deploy my changes to production, Is there anything I need to do that is special I need to add for compiling and/or deploying the modified application?
see code listed below:
 [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
  private void InitClass() {
  this.columnRec_ID = new global::System.Data.DataColumn("Rec_ID", typeof(int), null,
global::System.Data.MappingType.Element);
  base.Columns.Add(this.columnRec_ID);
  this.columnIG_REC_Date = new global::System.Data.DataColumn("REC_Date",
typeof(global::System.DateTime), null, global::System.Data.MappingType.Element);
  base.Columns.Add(this.columnREC_Date);