Question

DBGrid相同数据合并成一个格[最好用Delphi回答]

最近遇到一个软件:
DBGrid控件显示列的时候,其相同值合并为一个值显示
界面很美观;
即:
在一列中,如果遇到相同值时,便合并为一个单元格
跟Excel中的功能差不多,我想问一问哪位计算机程序高手告诉我这个问题;
谢谢
我不是希望在Excel中显示合并单元格
而是用界面控件直接显示

另外:请bugmenot同志详细说明一下ehlib到底用哪个版本的?怎样安装?安装后怎样使用?附原代码哦
感谢各位:如果帮我解决这个问题,分值再加

A 1 1
A 1 2
A 1 3
B 1 1
B 2 2
B 2 3

显示为:

A 1 1
-----2
-----3
B 1 1
---2 2
-----3
其中'-'为空格
谢谢各位

Answer 1

时间关系,无法写具体控件,以下对你有帮助:

☆☆ 本过程能够将TDBGridEh的多层表头导出到Excel中，并且还能够将给定字段的相同的值合并一起，例如：

(本地抄袭者死!早晨一则精华被抄骗得300分,郁闷!)

procedure BatchDBGridEhDataToExcel(DBGrid:TDBGridEh;Title:string;DrawGridLine:Boolean;
RangeFields:TStringList);

该过程将TDBGridEh中的数据导出到Excel中。本过程能够将TDBGridEh的多层表头导出到Excel中，并且还能够将给定字段的相同的值合并一起，例如：

参数：

DBGrid:TDBGridEh为要导出数据的网格控件，Title为报表的标题，DrawGridLine控制是否绘制网格线，RangeFields为需要合并数据的字段列表。

在“打印”按钮的OnClick事件中填写如下代码：

var
RangeFields:TStringList;
begin
file://true为绘制网格线//
RangeFields:=TStringList.Create;
RangeFields.Add('TJDWMC');
try
if RadioButton1.Checked then
BatchDBGridEhDataToExcel(DBGrid_JTGS,Caption,true,RangeFields)
else
BatchDBGridEhDataToExcel(DBGrid_LYJ,Caption,true,RangeFields);
finally
RangeFields.Free;
end;
end;

执行后启动Excel程序，显示界面如下所示：

注意：在合并网格时会出现是“否合并网格”对话框，请电击“是”即可。

需要声明的常量：

const
file://Excel用到的常量//
xlHairline = ＄00000001;
xlMedium = ＄FFFFEFD6;
xlThick = ＄00000004;
xlThin = ＄00000002;
const
file://Excel用到的常量//
xlContinuous = ＄00000001;
xlDash = ＄FFFFEFED;
xlDashDot = ＄00000004;
xlDashDotDot = ＄00000005;
xlDot = ＄FFFFEFEA;
xlDouble = ＄FFFFEFE9;
xlSlantDashDot = ＄0000000D;
xlLineStyleNone = ＄FFFFEFD2;
const
xlAll = ＄FFFFEFF8;
xlAutomatic = ＄FFFFEFF7;
xlBoth = ＄00000001;
xlCenter = ＄FFFFEFF4;
xlChecker = ＄00000009;
xlCircle = ＄00000008;
xlCorner = ＄00000002;
xlCrissCross = ＄00000010;
xlCross = ＄00000004;
xlDiamond = ＄00000002;
xlDistributed = ＄FFFFEFEB;
xlDoubleAccounting = ＄00000005;
xlFixedValue = ＄00000001;
xlFormats = ＄FFFFEFE6;
xlGray16 = ＄00000011;
xlGray8 = ＄00000012;
xlGrid = ＄0000000F;
xlHigh = ＄FFFFEFE1;
xlInside = ＄00000002;
xlJustify = ＄FFFFEFDE;
xlLightDown = ＄0000000D;
xlLightHorizontal = ＄0000000B;
xlLightUp = ＄0000000E;
xlLightVertical = ＄0000000C;
xlLow = ＄FFFFEFDA;
xlManual = ＄FFFFEFD9;
xlMinusValues = ＄00000003;
xlModule = ＄FFFFEFD3;
xlNextToAxis = ＄00000004;
xlNone = ＄FFFFEFD2;
xlNotes = ＄FFFFEFD0;
xlOff = ＄FFFFEFCE;
xlOn = ＄00000001;
xlPercent = ＄00000002;
xlPlus = ＄00000009;
xlPlusValues = ＄00000002;
xlSemiGray75 = ＄0000000A;
xlShowLabel = ＄00000004;
xlShowLabelAndPercent = ＄00000005;
xlShowPercent = ＄00000003;
xlShowValue = ＄00000002;
xlSimple = ＄FFFFEFC6;
xlSingle = ＄00000002;
xlSingleAccounting = ＄00000004;
xlSolid = ＄00000001;
xlSquare = ＄00000001;
xlStar = ＄00000005;
xlStError = ＄00000004;
xlToolbarButton = ＄00000002;
xlTriangle = ＄00000003;
xlGray25 = ＄FFFFEFE4;
xlGray50 = ＄FFFFEFE3;
xlGray75 = ＄FFFFEFE2;
xlBottom = ＄FFFFEFF5;
xlLeft = ＄FFFFEFDD;
xlRight = ＄FFFFEFC8;
xlTop = ＄FFFFEFC0;
xl3DBar = ＄FFFFEFFD;
xl3DSurface = ＄FFFFEFF9;
xlBar = ＄00000002;
xlColumn = ＄00000003;
xlCombination = ＄FFFFEFF1;
xlCustom = ＄FFFFEFEE;
xlDefaultAutoFormat = ＄FFFFFFFF;
xlMaximum = ＄00000002;
xlMinimum = ＄00000004;
xlOpaque = ＄00000003;
xlTransparent = ＄00000002;
xlBidi = ＄FFFFEC78;
xlLatin = ＄FFFFEC77;
xlContext = ＄FFFFEC76;
xlLTR = ＄FFFFEC75;
xlRTL = ＄FFFFEC74;
xlFullScript = ＄00000001;
xlPartialScript = ＄00000002;
xlMixedScript = ＄00000003;
xlMixedAuthorizedScript = ＄00000004;
xlVisualCursor = ＄00000002;
xlLogicalCursor = ＄00000001;
xlSystem = ＄00000001;
xlPartial = ＄00000003;
xlHindiNumerals = ＄00000003;
xlBidiCalendar = ＄00000003;
xlGregorian = ＄00000002;
xlComplete = ＄00000004;
xlScale = ＄00000003;
xlClosed = ＄00000003;
xlColor1 = ＄00000007;
xlColor2 = ＄00000008;
xlColor3 = ＄00000009;
xlConstants = ＄00000002;
xlContents = ＄00000002;
xlBelow = ＄00000001;
xlCascade = ＄00000007;
xlCenterAcrossSelection = ＄00000007;
xlChart4 = ＄00000002;
xlChartSeries = ＄00000011;
xlChartShort = ＄00000006;
xlChartTitles = ＄00000012;
xlClassic1 = ＄00000001;
xlClassic2 = ＄00000002;
xlClassic3 = ＄00000003;
xl3DEffects1 = ＄0000000D;
xl3DEffects2 = ＄0000000E;
xlAbove = ＄00000000;
xlAccounting1 = ＄00000004;
xlAccounting2 = ＄00000005;
xlAccounting3 = ＄00000006;
xlAccounting4 = ＄00000011;
xlAdd = ＄00000002;
xlDebugCodePane = ＄0000000D;
xlDesktop = ＄00000009;
xlDirect = ＄00000001;
xlDivide = ＄00000005;
xlDoubleClosed = ＄00000005;
xlDoubleOpen = ＄00000004;
xlDoubleQuote = ＄00000001;
xlEntireChart = ＄00000014;
xlExcelMenus = ＄00000001;
xlExtended = ＄00000003;
xlFill = ＄00000005;
xlFirst = ＄00000000;
xlFloating = ＄00000005;
xlFormula = ＄00000005;
xlGeneral = ＄00000001;
xlGridline = ＄00000016;
xlIcons = ＄00000001;
xlImmediatePane = ＄0000000C;
xlInteger = ＄00000002;
xlLast = ＄00000001;
xlLastCell = ＄0000000B;
xlList1 = ＄0000000A;
xlList2 = ＄0000000B;
xlList3 = ＄0000000C;
xlLocalFormat1 = ＄0000000F;
xlLocalFormat2 = ＄00000010;
xlLong = ＄00000003;
xlLotusHelp = ＄00000002;
xlMacrosheetCell = ＄00000007;
xlMixed = ＄00000002;
xlMultiply = ＄00000004;
xlNarrow = ＄00000001;
xlNoDocuments = ＄00000003;
xlOpen = ＄00000002;
xlOutside = ＄00000003;
xlReference = ＄00000004;
xlSemiautomatic = ＄00000002;
xlShort = ＄00000001;
xlSingleQuote = ＄00000002;
xlStrict = ＄00000002;
xlSubtract = ＄00000003;
xlTextBox = ＄00000010;
xlTiled = ＄00000001;
xlTitleBar = ＄00000008;
xlToolbar = ＄00000001;
xlVisible = ＄0000000C;
xlWatchPane = ＄0000000B;
xlWide = ＄00000003;
xlWorkbookTab = ＄00000006;
xlWorksheet4 = ＄00000001;
xlWorksheetCell = ＄00000003;
xlWorksheetShort = ＄00000005;
xlAllExceptBorders = ＄00000006;
xlLeftToRight = ＄00000002;
xlTopToBottom = ＄00000001;
xlVeryHidden = ＄00000002;
xlDrawingObject = ＄0000000E;
const

{ The list of VtFont styles }

{ FontStyleConstants }

VtFontStyleBold = 1;
VtFontStyleItalic = 2;
VtFontStyleOutline = 4;

{ The list of VtFont effects }

{ FontEffectsConstants }

VtFontEffectStrikeThrough = 256;
VtFontEffectUnderline = 512;

-------------------------------------------------------------------------------------------------------

procedure SetTitleInExcel(Sheet:OleVariant;
FirstRow,FirstCol,LastRow,LastCol:integer;Title:string);
var
RangeStr:string;
Range:Variant;
begin
Sheet.Activate;
RangeStr:=GetRangStr(FirstRow,FirstCol,LastRow,LastCol);
Range:=Sheet.Range[RangeStr];
Range.Merge(true);
Range.Font.Size:=14;
Range.Font.Name:='黑体';
Range.Font.FontStyle:=VtFontStyleBold;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=Title;
end;

function GetRangStr(FirstRow,FirstCol,LastRow,LastCol:integer):string;
var
iA,iB:integer;
begin
result:=';
if (FirstRow<1)or(LastRow<1)or(LastRow<1)or(LastCol<1) then
Exit;

iA:=FirstCol div 26;
iB:=FirstCol mod 26;
if iB=0 then
begin
iA:=iA-1;
iB:=26;
end;

if iA=0 then
result:=Chr(Ord('A')+iB-1)+IntToStr(FirstRow)+':'
else
result:=Chr(Ord('A')+iA-1)+Chr(Ord('A')+iB-1)+IntToStr(FirstRow)+':';

iA:=LastCol div 26;
iB:=LastCol mod 26;
if iB=0 then
begin
iA:=iA-1;
iB:=26;
end;

if iA=0 then
result:=result+Chr(Ord('A')+iB-1)+IntToStr(LastRow)
else
result:=result+Chr(Ord('A')+iA-1)+Chr(Ord('A')+iB-1)+IntToStr(LastRow);
end;

procedure DrawGridInExcel(Sheet:OleVariant;
FirstRow,FirstCol,LastRow,LastCol:integer);
var
RangeStr:string;
Range:Variant;
begin
Sheet.Activate;
RangeStr:=GetRangStr(FirstRow,FirstCol,LastRow,LastCol);
Range:=Sheet.Range[RangeStr];
Range.Columns.Interior.ColorIndex:=0;
Range.Borders.LineStyle:=xlHairline;
Range.Font.Size:=8;
Range.Font.Name:='楷体_GB2312';
end;

procedure TransMuiltTitleStr(Text: string;List:TStrings);
var
str:string;
Index:integer;
begin
str:=Text;
List.Clear;
Index:=Pos('|',str);
while Index>0 do
begin
List.Add(Copy(str,1,Index-1));
str:=Copy(str,Index+1,Length(str)-Index);
Index:=Pos('|',str);
end;
if Index=0 then
List.Add(str);
end;

Function My_DataSetToExcelSheet(DataSet:TDataSet;m_Fields:tstringlist;Sheet:OleVariant;
RangeFields:TStrings;DrawGridLine:Boolean;var FirstRow,FirstCol:integer): Boolean;
var
DataFirstRow,Row,Col,i,j :Integer;
BK:TBookMark;
LastValue,CurrentValue:string;
RangeStr:string;
Range:Variant;
RangeFirstRow,RangeFirstCol:integer;
List:TStringList; file://用于存储复合标题各个行的字符串列表//
MaxTVCount:integer;//标题最大纵向行数//
begin
Result := False;
if not Dataset.Active then exit;
BK:=DataSet.GetBookMark;
DataSet.DisableControls;
Sheet.Activate;
try
file://定制复杂列标题//
MaxTVCount:=0;
List:=TStringList.Create;
try
Col:=FirstCol;
for i:=0 to m_Fields.Count-1 do
begin
Row:=FirstRow;

TransMuiltTitleStr(DataSet.FieldByName(m_Fields.Strings[i]).DisplayLabel,List);
if List.Count>MaxTVCount then
MaxTVCount:=List.Count;

for j:=0 to List.Count-1 do
begin
Sheet.Cells(Row,Col) :=List.Strings[j];
Inc(Row);
end;

Inc(Col);
end;
finally
List.Free;
end;

file://绘制网格//
if DrawGridLine then
begin
DrawGridInExcel(Sheet,FirstRow,1,FirstRow+DataSet.RecordCount+MaxTVCount-1,
m_Fields.Count);
end;
file://横向合并标题网格//
for i:=FirstRow to FirstRow+MaxTVCount-1 do
begin
file://记录当前行//
Row:=i;
file://如果列数大于零则计算//
if m_Fields.Count>0 then
begin
RangeFirstCol:=1;
LastValue:=Sheet.Cells.Item[Row,RangeFirstCol];

for j:=2 to m_Fields.Count do
begin
CurrentValue:=Sheet.Cells.Item[Row,j];
if CurrentValue<>LastValue then
begin
file://合并单元格//
if LastValue<>' then
begin
RangeStr:=GetRangStr(Row,RangeFirstCol,Row,j-1);
Range:=Sheet.Range[RangeStr];
file://Range.Merge(false);
Range.mergecells:=true;
Range.WrapText:=true;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=LastValue;
end;

RangeFirstCol:=j;
LastValue:=Sheet.Cells.Item[Row,RangeFirstCol];
end;
end;
file://合并单元格//
if LastValue<>' then
begin
RangeStr:=GetRangStr(Row,RangeFirstCol,Row,m_Fields.Count);
Range:=Sheet.Range[RangeStr];
// Range.Merge(false);
Range.mergecells:=true;
Range.WrapText:=true;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=LastValue;
end;

RangeFirstCol:=m_Fields.Count+1;
LastValue:=Sheet.Cells.Item[Row,RangeFirstCol];
end;
end;
file://纵向合并标题网格,将纵向最后一个不为空值的格与其下面所有空格合并到一起//
if MaxTVCount>1 then
for i:=1 to m_Fields.Count do
for j:=FirstRow+MaxTVCount-1 downto FirstRow do
begin
CurrentValue:=Sheet.Cells.Item[j,i];
if CurrentValue<>' then
begin
if j<>FirstRow+MaxTVCount-1 then
begin
file://合并单元格//
RangeStr:=GetRangStr(j,i,FirstRow+MaxTVCount-1,i);
Range:=Sheet.Range[RangeStr];
Range.Merge(false);
Range.WrapText:=true;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=CurrentValue;
end;
Break;
end;
end;

file://数据的第一条的索引号//
DataFirstRow:=FirstRow+MaxTVCount;

Row:=DataFirstRow;

file://填写表格内容//
DataSet.First;
while Not DataSet.Eof do
begin
Col:=1;

for i:=0 to m_Fields.count-1 do
begin
Sheet.Cells(Row,Col):=DataSet.FieldByName(m_Fields.Strings[i]).AsString;
Inc(Col);
end;

Row:=Row+1;

DataSet.Next;
end;

if m_Fields.count>0 then
Col:=Col-1;

file://合并项目字段的值//
for i:=0 to RangeFields.Count-1 do
begin
Col:=m_Fields.IndexOf(RangeFields.Strings[i])+1;
if DataSet.RecordCount>0 then
begin
RangeFirstRow:=DataFirstRow;
LastValue:=Sheet.Cells.Item[RangeFirstRow,Col];

for j:=1 to DataSet.RecordCount-1 do
begin
CurrentValue:=Sheet.Cells.Item[DataFirstRow+j,Col];
if CurrentValue<>LastValue then
begin
file://合并单元格//
RangeStr:=GetRangStr(RangeFirstRow,Col,DataFirstRow+j-1,Col);
Range:=Sheet.Range[RangeStr];
Range.Merge(false);
Range.WrapText:=true;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=LastValue;

RangeFirstRow:=DataFirstRow+j;
LastValue:=Sheet.Cells.Item[RangeFirstRow,Col];
end;
end;
file://合并单元格//
RangeStr:=GetRangStr(RangeFirstRow,Col,DataFirstRow+DataSet.RecordCount-1,Col);
Range:=Sheet.Range[RangeStr];
Range.Merge(false);
Range.WrapText:=true;
Range.HorizontalAlignment := xlCenter;
Range.VerticalAlignment := xlCenter;
Range.Value:=LastValue;

RangeFirstRow:=DataFirstRow+DataSet.RecordCount;
LastValue:=Sheet.Cells.Item[RangeFirstRow,Col];
end;
end;

Result := True;
finally
DataSet.GotoBookMark(BK);
DataSet.EnableControls;
end;
end;

procedure BatchDBGridEhDataToExcel(DBGrid:TDBGridEh;Title:string;DrawGridLine:Boolean;
RangeFields:TStringList);
var
s:tstringlist;
i:integer;
begin
if not DBGrid.DataSource.DataSet.active then
begin
MessageDlg('主结果集没有打开！',mtWarning,[mbok],0);
exit;
end;
s:=tstringlist.create;
try
for i:=0 to DBGrid.Columns.Count-1 do
begin
s.Add(DBGrid.Columns[i].FieldName);
DBGrid.DataSource.DataSet.FieldByName(
DBGrid.Columns[i].FieldName).DisplayLabel:=
DBGrid.Columns[i].Title.Caption;
end;
My_DataSetToExcel(DBGrid.DataSource.DataSet,s,RangeFields,DrawGridLine,true,
Title,');
finally
s.free;
end;
end;

Answer 2

http://www.china-askpro.com/vbasic23.shtml
(vb相关的专家网站,站长会很乐意解答你的疑问)
例如:

表单的TCURRENCY类型，如何选择货币种类

如何使Tstringgrid中的数字都靠右

如何给DBGRID中特殊的字段赋予不同的颜色

TStringGrid中的单元格，如何用程序语句取值和赋值

出错提示为"IDEX IS READ ONLY"

TStringGrid控件在一个单元失去焦点时作出事件响应

如何设置DBGrid的ScrollBar状态

如何在数据网格(DBGrid)中插入其他的可视控件

如何锁定Delphi的DBGRID的列

Answer 3

表单的TCURRENCY类型，如何选择货币种类

如何使Tstringgrid中的数字都靠右

如何给DBGRID中特殊的字段赋予不同的颜色

TStringGrid中的单元格，如何用程序语句取值和赋值

出错提示为"IDEX IS READ ONLY"

TStringGrid控件在一个单元失去焦点时作出事件响应

如何设置DBGrid的ScrollBar状态

如何在数据网格(DBGrid)中插入其他的可视控件

如何锁定Delphi的DBGRID的列

Answer 4

其实最好用sql来解决.反正delphi也可以调用的

用group by就可以

Answer 5

你的问题我没看明白不过看上去应该是不难!

名称 名称 名称
A 1 2
B 1 2
C 1 6
D 2 7

你要的显示是什么样的呢?

------------------------------------------------

我认为把下面的掩盖住就可以啦
用 DrawDataCell事件+TDBGrid(Sender).Canvas.FillRect(Rect);
对比是否跟上一个数据相同然后 掩盖,HOHO~

------------------------------------------------
无聊再说两句,这样做真的美观吗?我怎么就没看出
来美在哪里呢?呵呵 :)

Answer 6

ehlib这个控件支持。