Ext.Net.GroupingSummary.RegisterCalculations C# (CSharp) Method

        protected internal virtual void RegisterCalculations()
        {
            if (this.Calculations.Count == 0)
                {
                    return;
                }

                StringBuilder sb = new StringBuilder();

                sb.Append("Ext.apply(Ext.grid.GroupSummary.Calculations,{");
                bool comma = false;
                foreach (JFunction f in this.Calculations)
                {
                    if (f.Name.IsEmpty())
                    {
                        throw new Exception("You have to define Name for GroupingSummary calculation function");
                    }

                    if (comma)
                    {
                        sb.Append(",");
                    }
                    f.Args = new string[] { "v", "record", "field", "data" };
                    sb.Append(f.ToScript());
                    comma = true;
                }
                sb.Append("});");

                this.AddScript(sb.ToString());
        }