报错sql读取excel 时 microsoft jet 数据库引擎找不到对象"demo1",请确保对象存在。
sDriver=GetExcelDriver();sDsn.Format("ODBC;DRIVER={%s};DSN='';DBQ=%s",sDriver,sFile);...
sDriver = GetExcelDriver();
sDsn.Format("ODBC;DRIVER={%s};DSN='';DBQ=%s", sDriver, sFile);
// 打开数据库(既Excel文件)
TRY
{
database.Open(NULL, false, false, sDsn);
CRecordset recset(&database);
sSql ="SELECT * FROM [demo1]";
recset.Open(CRecordset::forwardOnly, sSql, CRecordset::readOnly);执行到这就报错 展开
sDsn.Format("ODBC;DRIVER={%s};DSN='';DBQ=%s", sDriver, sFile);
// 打开数据库(既Excel文件)
TRY
{
database.Open(NULL, false, false, sDsn);
CRecordset recset(&database);
sSql ="SELECT * FROM [demo1]";
recset.Open(CRecordset::forwardOnly, sSql, CRecordset::readOnly);执行到这就报错 展开
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VB操作EXCEL
全面控制 Excel
首先创建 Excel 对象,使用ComObj:
Dim ExcelID as Excel.Application
Set ExcelID as new Excel.Application
1) 显示当前窗口:
ExcelID.Visible := True;
2) 更改 Excel 标题栏:
ExcelID.Caption := \'应用程序调用 Microsoft Excel\';
3) 添加新工作簿:
ExcelID.WorkBooks.Add;
4) 打开已存在的工作簿:
ExcelID.WorkBooks.Open( \'C:\\Excel\\Demo.xls\' );
5) 设置第2个工作表为活动工作表:
ExcelID.WorkSheets[2].Activate;
或 ExcelID.WorkSheets[ \'Sheet2\' ].Activate;
6) 给单元格赋值:
ExcelID.Cells[1,4].Value := \'第一行第四列\';
7) 设置指定列的宽度(单位:字符个数),以第一列为例:
ExcelID.ActiveSheet.Columns[1].ColumnsWidth := 5;
8) 设置指定行的高度(单位:磅)(1磅=0.035厘米),以第二行为例:
ExcelID.ActiveSheet.Rows[2].RowHeight := 1/0.035; // 1厘米
9) 在第8行之前插入分页符:
ExcelID.WorkSheets[1].Rows[8].PageBreak := 1;
参考代码:ActiveSheet.HPageBreaks(1).Location = Range("A22")
10) 在第8列之前删除分页符:
ExcelID.ActiveSheet.Columns[4].PageBreak := 0;
11) 指定边框线宽度:
ExcelID.ActiveSheet.Range[ \'B3:D4\' ].Borders[2].Weight := 3;
1-左 2-右 3-顶 4-底 5-斜( \\ ) 6-斜( / )
12) 清除第一行第四列单元格公式:
ExcelID.ActiveSheet.Cells[1,4].ClearContents;
13) 设置第一行字体属性:
ExcelID.ActiveSheet.Rows[1].Font.Name := \'隶书\';
ExcelID.ActiveSheet.Rows[1].Font.Color := clBlue;
ExcelID.ActiveSheet.Rows[1].Font.Bold := True;
ExcelID.ActiveSheet.Rows[1].Font.UnderLine := True;
14) 进行页面设置:
a.页眉:
ExcelID.ActiveSheet.PageSetup.CenterHeader := \'报表演示\';
b.页脚:
ExcelID.ActiveSheet.PageSetup.CenterFooter := \'第&P页\';
c.页眉到顶端边距2cm:
ExcelID.ActiveSheet.PageSetup.HeaderMargin := 2/0.035;
d.页脚到底端边距3cm:
ExcelID.ActiveSheet.PageSetup.HeaderMargin := 3/0.035;
e.顶边距2cm:
ExcelID.ActiveSheet.PageSetup.TopMargin := 2/0.035;
f.底边距2cm:
ExcelID.ActiveSheet.PageSetup.BottomMargin := 2/0.035;
g.左边距2cm:
ExcelID.ActiveSheet.PageSetup.LeftMargin := 2/0.035;
h.右边距2cm:
ExcelID.ActiveSheet.PageSetup.RightMargin := 2/0.035;
i.页面水平居中:
ExcelID.ActiveSheet.PageSetup.CenterHorizontally := 2/0.035;
j.页面垂直居中:
ExcelID.ActiveSheet.PageSetup.CenterVertically := 2/0.035;
k.打印单元格网线:
ExcelID.ActiveSheet.PageSetup.PrintGridLines := True;
15) 拷贝操作:
a.拷贝整个工作表:
ExcelID.ActiveSheet.Used.Range.Copy;
b.拷贝指定区域:
ExcelID.ActiveSheet.Range[ \'A1:E2\' ].Copy;
c.从A1位置开始粘贴:
ExcelID.ActiveSheet.Range.[ \'A1\' ].PasteSpecial;
d.从文件尾部开始粘贴:
ExcelID.ActiveSheet.Range.PasteSpecial;
16) 插入一行或一列:
a. ExcelID.ActiveSheet.Rows[2].Insert;
b. ExcelID.ActiveSheet.Columns[1].Insert;
17) 删除一行或一列:
a. ExcelID.ActiveSheet.Rows[2].Delete;
b. ExcelID.ActiveSheet.Columns[1].Delete;
18) 打印预览工作表:
ExcelID.ActiveSheet.PrintPreview;
19) 打印输出工作表:
ExcelID.ActiveSheet.PrintOut;
20) 工作表保存:
If not ExcelID.ActiveWorkBook.Saved then
ExcelID.ActiveSheet.PrintPreview
End if
21) 工作表另存为:
ExcelID.SaveAs( \'C:\\Excel\\Demo1.xls\' );
22) 放弃存盘:
ExcelID.ActiveWorkBook.Saved := True;
23) 关闭工作簿:
ExcelID.WorkBooks.Close;
24) 退出 Excel:
ExcelID.Quit;
25) 设置工作表密码:
ExcelID.ActiveSheet.Protect "123", DrawingObjects:=True, Contents:=True, Scenarios:=True
26) EXCEL的显示方式为最大化
ExcelID.Application.WindowState = xlMaximized
27) 工作薄显示方式为最大化
ExcelID.ActiveWindow.WindowState = xlMaximized
28) 设置打开默认工作薄数量
ExcelID.SheetsInNewWorkbook = 3
29) \'关闭时是否提示保存(true 保存;false 不保存)
ExcelID.DisplayAlerts = False
30) 设置拆分窗口,及固定行位置
ExcelID.ActiveWindow.SplitRow = 1
ExcelID.ActiveWindow.FreezePanes = True
31) 设置打印时固定打印内容
ExcelID.ActiveSheet.PageSetup.PrintTitleRows = "$1:$1"
32) 设置打印标题
ExcelID.ActiveSheet.PageSetup.PrintTitleColumns = ""
33) 设置显示方式(分页方式显示)
ExcelID.ActiveWindow.View = xlPageBreakPreview
34) 设置显示比例
ExcelID.ActiveWindow.Zoom = 100
35) 让Excel 响应 DDE 请求
Ex.Application.IgnoreRemoteRequests = False
用VB操作EXCEL
Private Sub Command3_Click()
On Error GoTo err1
Dim i As Long
Dim j As Long
Dim objExl As Excel.Application \'声明对象变量
Me.MousePointer = 11 \'改变鼠标样式
Set objExl = New Excel.Application \'初始化对象变量
objExl.SheetsInNewWorkbook = 1 \'将新建的工作薄数量设为1
objExl.Workbooks.Add \'增加一个工作薄
objExl.Sheets(objExl.Sheets.Count).Name = "book1" \'修改工作薄名称
objExl.Sheets.Add , objExl.Sheets("book1") ‘增加第二个工作薄在第一个之后
objExl.Sheets(objExl.Sheets.Count).Name = "book2"
objExl.Sheets.Add , objExl.Sheets("book2") ‘增加第三个工作薄在第二个之后
objExl.Sheets(objExl.Sheets.Count).Name = "book3"
objExl.Sheets("book1").Select \'选中工作薄<book1>
For i = 1 To 50 \'循环写入数据
For j = 1 To 5
If i = 1 Then
objExl.Selection.NumberFormatLocal = "@" \'设置格式为文本
objExl.Cells(i, j) = " E " & i & j
Else
objExl.Cells(i, j) = i & j
End If
Next
Next
objExl.Rows("1:1").Select \'选中第一行
objExl.Selection.Font.Bold = True \'设为粗体
objExl.Selection.Font.Size = 24 \'设置字体大小
objExl.Cells.EntireColumn.AutoFit \'自动调整列宽
objExl.ActiveWindow.SplitRow = 1 \'拆分第一行
objExl.ActiveWindow. SplitColumn = 0 \'拆分列
objExl.ActiveWindow.FreezePanes = True \'固定拆分 objExl.ActiveSheet.PageSetup.PrintTitleRows = "$1:$1" \'设置打印固定行
objExl.ActiveSheet.PageSetup.PrintTitleColumns = "" \'打印标题 objExl.ActiveSheet.PageSetup.RightFooter = "打印时间: " & _
Format(Now, "yyyy年mm月dd日 hh:MM:ss")
objExl.ActiveWindow.View = xlPageBreakPreview \'设置显示方式
objExl.ActiveWindow.Zoom = 100 \'设置显示大小
objExl.ActiveSheet.PageSetup.Orientation = xlLandscape ‘设置打印方向(横向)
\'给工作表加密码
objExl.ActiveSheet.Protect "123", DrawingObjects:=True, _
Contents:=True, Scenarios:=True
objExl.Application.IgnoreRemoteRequests = False
objExl.Visible = True \'使EXCEL可见
objExl.Application.WindowState = xlMaximized \'EXCEL的显示方式为最大化
objExl.ActiveWindow.WindowState = xlMaximized \'工作薄显示方式为最大化
objExl.SheetsInNewWorkbook = 3 \'将默认新工作薄数量改回3个
Set objExl = Nothing \'清除对象
Me.MousePointer = 0 \'修改鼠标
Exit Sub
err1:
objExl.SheetsInNewWorkbook = 3
objExl.DisplayAlerts = False \'关闭时不提示保存
objExl.Quit \'关闭EXCEL
objExl.DisplayAlerts = True \'关闭时提示保存
Set objExl = Nothing
Me.MousePointer = 0
End Sub
VB操作EXCEL
全面控制 Excel
首先创建 Excel 对象,使用ComObj:
Dim ExcelID as Excel.Application
Set ExcelID as new Excel.Application
1) 显示当前窗口:
ExcelID.Visible := True;
2) 更改 Excel 标题栏:
ExcelID.Caption := \'应用程序调用 Microsoft Excel\';
3) 添加新工作簿:
ExcelID.WorkBooks.Add;
4) 打开已存在的工作簿:
ExcelID.WorkBooks.Open( \'C:\\Excel\\Demo.xls\' );
5) 设置第2个工作表为活动工作表:
ExcelID.WorkSheets[2].Activate;
或 ExcelID.WorkSheets[ \'Sheet2\' ].Activate;
6) 给单元格赋值:
ExcelID.Cells[1,4].Value := \'第一行第四列\';
7) 设置指定列的宽度(单位:字符个数),以第一列为例:
ExcelID.ActiveSheet.Columns[1].ColumnsWidth := 5;
8) 设置指定行的高度(单位:磅)(1磅=0.035厘米),以第二行为例:
ExcelID.ActiveSheet.Rows[2].RowHeight := 1/0.035; // 1厘米
9) 在第8行之前插入分页符:
ExcelID.WorkSheets[1].Rows[8].PageBreak := 1;
参考代码:ActiveSheet.HPageBreaks(1).Location = Range("A22")
10) 在第8列之前删除分页符:
ExcelID.ActiveSheet.Columns[4].PageBreak := 0;
11) 指定边框线宽度:
ExcelID.ActiveSheet.Range[ \'B3:D4\' ].Borders[2].Weight := 3;
1-左 2-右 3-顶 4-底 5-斜( \\ ) 6-斜( / )
12) 清除第一行第四列单元格公式:
ExcelID.ActiveSheet.Cells[1,4].ClearContents;
13) 设置第一行字体属性:
ExcelID.ActiveSheet.Rows[1].Font.Name := \'隶书\';
ExcelID.ActiveSheet.Rows[1].Font.Color := clBlue;
ExcelID.ActiveSheet.Rows[1].Font.Bold := True;
ExcelID.ActiveSheet.Rows[1].Font.UnderLine := True;
14) 进行页面设置:
a.页眉:
ExcelID.ActiveSheet.PageSetup.CenterHeader := \'报表演示\';
b.页脚:
ExcelID.ActiveSheet.PageSetup.CenterFooter := \'第&P页\';
c.页眉到顶端边距2cm:
ExcelID.ActiveSheet.PageSetup.HeaderMargin := 2/0.035;
d.页脚到底端边距3cm:
ExcelID.ActiveSheet.PageSetup.HeaderMargin := 3/0.035;
e.顶边距2cm:
ExcelID.ActiveSheet.PageSetup.TopMargin := 2/0.035;
f.底边距2cm:
ExcelID.ActiveSheet.PageSetup.BottomMargin := 2/0.035;
g.左边距2cm:
ExcelID.ActiveSheet.PageSetup.LeftMargin := 2/0.035;
h.右边距2cm:
ExcelID.ActiveSheet.PageSetup.RightMargin := 2/0.035;
i.页面水平居中:
ExcelID.ActiveSheet.PageSetup.CenterHorizontally := 2/0.035;
j.页面垂直居中:
ExcelID.ActiveSheet.PageSetup.CenterVertically := 2/0.035;
k.打印单元格网线:
ExcelID.ActiveSheet.PageSetup.PrintGridLines := True;
15) 拷贝操作:
a.拷贝整个工作表:
ExcelID.ActiveSheet.Used.Range.Copy;
b.拷贝指定区域:
ExcelID.ActiveSheet.Range[ \'A1:E2\' ].Copy;
c.从A1位置开始粘贴:
ExcelID.ActiveSheet.Range.[ \'A1\' ].PasteSpecial;
d.从文件尾部开始粘贴:
ExcelID.ActiveSheet.Range.PasteSpecial;
16) 插入一行或一列:
a. ExcelID.ActiveSheet.Rows[2].Insert;
b. ExcelID.ActiveSheet.Columns[1].Insert;
17) 删除一行或一列:
a. ExcelID.ActiveSheet.Rows[2].Delete;
b. ExcelID.ActiveSheet.Columns[1].Delete;
18) 打印预览工作表:
ExcelID.ActiveSheet.PrintPreview;
19) 打印输出工作表:
ExcelID.ActiveSheet.PrintOut;
20) 工作表保存:
If not ExcelID.ActiveWorkBook.Saved then
ExcelID.ActiveSheet.PrintPreview
End if
21) 工作表另存为:
ExcelID.SaveAs( \'C:\\Excel\\Demo1.xls\' );
22) 放弃存盘:
ExcelID.ActiveWorkBook.Saved := True;
23) 关闭工作簿:
ExcelID.WorkBooks.Close;
24) 退出 Excel:
ExcelID.Quit;
25) 设置工作表密码:
ExcelID.ActiveSheet.Protect "123", DrawingObjects:=True, Contents:=True, Scenarios:=True
26) EXCEL的显示方式为最大化
ExcelID.Application.WindowState = xlMaximized
27) 工作薄显示方式为最大化
ExcelID.ActiveWindow.WindowState = xlMaximized
28) 设置打开默认工作薄数量
ExcelID.SheetsInNewWorkbook = 3
29) \'关闭时是否提示保存(true 保存;false 不保存)
ExcelID.DisplayAlerts = False
30) 设置拆分窗口,及固定行位置
ExcelID.ActiveWindow.SplitRow = 1
ExcelID.ActiveWindow.FreezePanes = True
31) 设置打印时固定打印内容
ExcelID.ActiveSheet.PageSetup.PrintTitleRows = "$1:$1"
32) 设置打印标题
ExcelID.ActiveSheet.PageSetup.PrintTitleColumns = ""
33) 设置显示方式(分页方式显示)
ExcelID.ActiveWindow.View = xlPageBreakPreview
34) 设置显示比例
ExcelID.ActiveWindow.Zoom = 100
35) 让Excel 响应 DDE 请求
Ex.Application.IgnoreRemoteRequests = False
用VB操作EXCEL
Private Sub Command3_Click()
On Error GoTo err1
Dim i As Long
Dim j As Long
Dim objExl As Excel.Application \'声明对象变量
Me.MousePointer = 11 \'改变鼠标样式
Set objExl = New Excel.Application \'初始化对象变量
objExl.SheetsInNewWorkbook = 1 \'将新建的工作薄数量设为1
objExl.Workbooks.Add \'增加一个工作薄
objExl.Sheets(objExl.Sheets.Count).Name = "book1" \'修改工作薄名称
objExl.Sheets.Add , objExl.Sheets("book1") ‘增加第二个工作薄在第一个之后
objExl.Sheets(objExl.Sheets.Count).Name = "book2"
objExl.Sheets.Add , objExl.Sheets("book2") ‘增加第三个工作薄在第二个之后
objExl.Sheets(objExl.Sheets.Count).Name = "book3"
objExl.Sheets("book1").Select \'选中工作薄<book1>
For i = 1 To 50 \'循环写入数据
For j = 1 To 5
If i = 1 Then
objExl.Selection.NumberFormatLocal = "@" \'设置格式为文本
objExl.Cells(i, j) = " E " & i & j
Else
objExl.Cells(i, j) = i & j
End If
Next
Next
objExl.Rows("1:1").Select \'选中第一行
objExl.Selection.Font.Bold = True \'设为粗体
objExl.Selection.Font.Size = 24 \'设置字体大小
objExl.Cells.EntireColumn.AutoFit \'自动调整列宽
objExl.ActiveWindow.SplitRow = 1 \'拆分第一行
objExl.ActiveWindow. SplitColumn = 0 \'拆分列
objExl.ActiveWindow.FreezePanes = True \'固定拆分 objExl.ActiveSheet.PageSetup.PrintTitleRows = "$1:$1" \'设置打印固定行
objExl.ActiveSheet.PageSetup.PrintTitleColumns = "" \'打印标题 objExl.ActiveSheet.PageSetup.RightFooter = "打印时间: " & _
Format(Now, "yyyy年mm月dd日 hh:MM:ss")
objExl.ActiveWindow.View = xlPageBreakPreview \'设置显示方式
objExl.ActiveWindow.Zoom = 100 \'设置显示大小
objExl.ActiveSheet.PageSetup.Orientation = xlLandscape ‘设置打印方向(横向)
\'给工作表加密码
objExl.ActiveSheet.Protect "123", DrawingObjects:=True, _
Contents:=True, Scenarios:=True
objExl.Application.IgnoreRemoteRequests = False
objExl.Visible = True \'使EXCEL可见
objExl.Application.WindowState = xlMaximized \'EXCEL的显示方式为最大化
objExl.ActiveWindow.WindowState = xlMaximized \'工作薄显示方式为最大化
objExl.SheetsInNewWorkbook = 3 \'将默认新工作薄数量改回3个
Set objExl = Nothing \'清除对象
Me.MousePointer = 0 \'修改鼠标
Exit Sub
err1:
objExl.SheetsInNewWorkbook = 3
objExl.DisplayAlerts = False \'关闭时不提示保存
objExl.Quit \'关闭EXCEL
objExl.DisplayAlerts = True \'关闭时提示保存
Set objExl = Nothing
Me.MousePointer = 0
End Sub
追问
我是用c++实现,通过ODBC读取excel文件,在关联记录查询发现打不开"demo1"这张表?
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