返回对指定字体应用的下划线类型
这种方法没有任何参数
builder.CreateFile("xlsx")!varoWorksheetvarorange=oWorksheORange.SetValueVaroCharctissss/ORange/GetCharctiss/9/4varoFont=oCharacters.getFontoFont.SetUnderline("xlUnderlineStyleSingle")!varssublie=OFont.Getsublieworkshe.GetRange(B3).Setvaluebuilder.SaveFile("xlsx", "GetUnderline.xlsx")!builder.CloseFile();