Rock.Web.UI.Controls.KeyValueList.RenderBaseControl C# (CSharp) Method

        public override void RenderBaseControl( HtmlTextWriter writer )
        {
            Dictionary<string, string> values = null;
            if ( DefinedTypeId.HasValue )
            {
                values = new Dictionary<string, string>();
                new DefinedValueService( new RockContext() )
                    .GetByDefinedTypeId( DefinedTypeId.Value )
                    .ToList()
                    .ForEach( v => values.Add( v.Id.ToString(), v.Value ) );
            }
            else if ( CustomValues != null )
            {
                values = CustomValues;
            }

            writer.AddAttribute( HtmlTextWriterAttribute.Class, "key-value-list " + this.CssClass );
            writer.AddAttribute( HtmlTextWriterAttribute.Id, this.ClientID );
            writer.RenderBeginTag( HtmlTextWriterTag.Span );
            writer.WriteLine();

            _hfValue.RenderControl( writer );
            writer.WriteLine();

            StringBuilder html = new StringBuilder();
            html.Append( @"<div class=""controls controls-row form-control-group"">");

            // write key/value html
            if ( this.DisplayValueFirst )
            {
                WriteValueHtml( html, values );
                WriteKeyHtml( html );
            }
            else
            {
                WriteKeyHtml( html );
                WriteValueHtml( html, values );
            }

            html.Append( @"<a href=""#"" class=""btn btn-sm btn-danger key-value-remove""><i class=""fa fa-minus-circle""></i></a></div>" );

            var hfValueHtml = new HtmlInputHidden();
            hfValueHtml.AddCssClass( "js-value-html" );
            hfValueHtml.Value = html.ToString();
            hfValueHtml.RenderControl( writer );

            writer.AddAttribute( HtmlTextWriterAttribute.Class, "key-value-rows" );
            writer.RenderBeginTag( HtmlTextWriterTag.Span );
            writer.WriteLine();

            string[] nameValues = this.Value.Split( new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries );
            foreach ( string nameValue in nameValues )
            {
                string[] nameAndValue = nameValue.Split( new char[] { '^' } );

                writer.AddAttribute( HtmlTextWriterAttribute.Class, "controls controls-row form-control-group" );
                writer.RenderBeginTag( HtmlTextWriterTag.Div );
                writer.WriteLine();

                if ( DisplayValueFirst )
                {
                    WriteValueControls( writer, nameAndValue, values );
                    WriteKeyControls( writer, nameAndValue );
                }
                else
                {
                    WriteKeyControls( writer, nameAndValue );
                    WriteValueControls( writer, nameAndValue, values );
                }

                // Write Remove Button
                writer.AddAttribute( HtmlTextWriterAttribute.Href, "#" );
                writer.AddAttribute( HtmlTextWriterAttribute.Class, "btn btn-sm btn-danger key-value-remove" );
                writer.RenderBeginTag( HtmlTextWriterTag.A );
                writer.AddAttribute(HtmlTextWriterAttribute.Class, "fa fa-minus-circle");
                writer.RenderBeginTag( HtmlTextWriterTag.I );
                writer.RenderEndTag();
                writer.RenderEndTag();
                writer.WriteLine();

                writer.RenderEndTag();
                writer.WriteLine();

            }

            writer.RenderEndTag();
            writer.WriteLine();

            writer.AddAttribute( HtmlTextWriterAttribute.Class, "actions" );
            writer.RenderBeginTag( HtmlTextWriterTag.Div );

            writer.AddAttribute( HtmlTextWriterAttribute.Class, "btn btn-action btn-xs key-value-add" );
            writer.AddAttribute( HtmlTextWriterAttribute.Href, "#" );
            writer.RenderBeginTag( HtmlTextWriterTag.A );
            writer.AddAttribute(HtmlTextWriterAttribute.Class, "fa fa-plus-circle");
            writer.RenderBeginTag( HtmlTextWriterTag.I );

            writer.RenderEndTag();
            writer.RenderEndTag();
            writer.RenderEndTag();
            writer.WriteLine();

            writer.RenderEndTag();
            writer.WriteLine();

            RegisterClientScript();
        }