超简单问题，回答正确马上给分.

FrmSearchResult:=TfrmSearchResult.create(self);
          frmSearchResult.datasource1.DataSet:=nil;
          frmSearchResult.datasource1.DataSet:=QSearchResult; frmSearchResult.dxDBGrid1.CreateDefaultColumns(QSearchResult,self);
          for i:=0 to listv3.Items.Count-1 do
          begin
              if listv3.Items [i].SubItems[2]<>'' then
              begin
                  frmSearchResult.dxDBGrid1.Columns[i].summaryfooterfield:=listv3.Items [i].SubItems[2];
                  if listv3.Items [i].SubItems[2]='求和' then
                  begin
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfooterformat:='合计:0.000';
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfootertype:=cstSum;
                  end
                  else
                  if listv3.Items [i].SubItems[2]='计数' then
                  begin
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfooterformat:='共0条记录';
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfootertype:=cstCount;
                  end
                  else
                  if listv3.Items [i].SubItems[2]='最大值' then
                  begin
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfooterformat:='最大值:0.000';
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfootertype:=cstMax;
                  end
                  else
                  if listv3.Items [i].SubItems[2]='最小值' then
                  begin
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfooterformat:='最小值:0.000';
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfootertype:=cstMin;
                  end
                  else
                  if listv3.Items [i].SubItems[2]='平均' then
                  begin
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfooterformat:='平均值:0.000';
                      frmSearchResult.dxDBGrid1.Columns[i].summaryfootertype:=cstAvg;
                  end;
              end;
          end;
          frmSearchResult.dxDBGrid1.KeyField:=dxdbgrid1.Columns[0].FieldName;
          frmSearchResult.showmodal;运行后没有对数据进行处理，不知还欠缺什么