SSRS表达式 实现:值的结构百分比的表达式:Value=iif(Sum(Fields!ED.Value, "projectname")=0,0,Sum(Fields!ED.Value)/Sum(Fields!ED.Value, "projectname"))实现:当值为0时不显示(白色),当小于0时为红色,否则为黑色。Color=iif(Sum(Fields!ED.Value)=0,"white",iif(Sum(Fields!ED.Value)<0,"red","black"))