[C#] 정수형 숫자 세자리 마다 콤마(,) 표시하는 방법

값이 0인경우 Null 출력 하기

String.Format("{0:##,##}" 변수명);

int total_cost = 12140104; int total_money_cost = 8278383; int total_card_cost = -7215663; int total_point_cost = 12280; string output = null; output = "<div class='summary_boxer-row'>"; output += "<div class='summary_boxer-box'>" + "<span>" + dsResult.Tables[0].Select().Length + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##}", total_money_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##}", total_card_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##}", total_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##}", total_point_cost) + "</span>" + "</div>"; output += "</div>"; ltl_summary.Text = output;

값이 0인경우 0 출력하기

String.Format("{0:##,##0}" 변수명);

int total_cost = 12140104; int total_money_cost = 8278383; int total_card_cost = -7215663; int total_point_cost = 12280; string output = null; output = "<div class='summary_boxer-row'>"; output += "<div class='summary_boxer-box'>" + "<span>" + dsResult.Tables[0].Select().Length + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##0}", total_money_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##0}", total_card_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##0}", total_cost) + "</span>" + "</div>"; output += "<div class='summary_boxer-box'>" + "<span>" + String.Format("{0:##,##0}", total_point_cost) + "</span>" + "</div>"; output += "</div>"; ltl_summary.Text = output;