VB2005中把Excel的数据导入Access表取消选择文件操作
VB2005中把Excel的数据导入Access表取消选择文件操作求助
在VB2005中使用下面的语句把Excel中的数据导入到Access中，正常选择Excel文件导入没有问题，但在打开的选择文件窗口中如果选择取消，则系统提示对象错误，意思是没有要导入的文件。请教各位高手，应在下面语句的什么位置上添加什么语句，可以解决已打开选择导入文件窗口后又取消时出现错误提示问题。多谢各位。
Me.OpenFileDialog1.Filter = "Excle文件(*.xls)|*.xls"
If Me.OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
'TextBox11.Text = Me.OpenFileDialog1.FileName
Label11.Text = Me.OpenFileDialog1.FileName
Dim myDataset As New DataSet
Dim ExcelConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" & Label11.Text & "';Extended
Properties=Excel 8.0;"
Dim myDataAdapter As New OleDb.OleDbDataAdapter("SELECT * FROM [Sheet1$]", ExcelConnStr)
Me.Cursor = Cursors.WaitCursor
Try
myDataAdapter.Fill(myDataset)
DataGridView2.DataSource = myDataset.Tables(0)
Catch ex As Exception
MsgBox(ex.Message)
Me.Cursor = Cursors.Default
Exit Sub
End Try
End If
------解决方案--------------------
Label11.Text = Me.OpenFileDialog1.FileName
只要对这个文件名称作个判断就可以了,如果点了取消,这个 Me.OpenFileDialog1.FileName 就是""空值,所以
if Me.OpenFileDialog1.FileName ="" 的时候 直接exit sub
建议把代码写成 if Me.OpenFileDialog1.FileName <> "" then 写成这种不等于空的判断,有好处,
把你要执行的关键代码全包进这个if里面,当用户点"取消"的时候,根本不会执行的.
------解决方案--------------------
我贴一段我的代码,你看看,我刚才细想了一下,好象不对,我还是把自己用的代码给你,你自己研究吧,
文件名要自己"令"它为空!
Dim strFile As String
Try
If SplitContainer5.Panel1Collapsed = False Then
With SaveFileDialog1
.FileName = " "
.Filter = "Excel文件(*.xls)|*.xls "
.FilterIndex = 1
End With
Else
With SaveFileDialog1
.FileName = " "
.Filter = "Jpeg文件(*.jpg)|*.jpg "
.FilterIndex = 1
End With
End If
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.Cancel Then
strFile = ""
Else
strFile = SaveFileDialog1.FileName
End If
If strFile <> "" Then
Application.DoEvents()
If SplitContainer5.Panel1Collapsed = False Then '导出表格
If C4.Rows.Count = 0 Then
MessageBox.Show("没有记录可以导出", "没有可以导出的项目", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Sub
End If
C4.SaveGrid(strFile, FileFormatEnum.Excel, FileFlags.SaveMergedRanges Or FileFlags.IncludeFixedCells)
Dim xlApp As Excel.Application = New Excel.Application
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet
'Set xlApp = Excel.Application
xlApp = CreateObject("excel.application") '不能用上一句，否则excel退不干净
xlApp.Visible = False
xlBook = xlApp.Workbooks.Open(strFile)
xlSheet = xlBook.Worksheets("sheet1")
With xlSheet
.Range(.Cells(1, 1), .Cells(1, C4.Cols.Count)).Font.Name = "微软雅黑"
'设标题为黑体字
'.Range(.Cells(1, 1), .Cells(1, C1.Rows.Count + 2)).Font.Bold = True
在VB2005中使用下面的语句把Excel中的数据导入到Access中，正常选择Excel文件导入没有问题，但在打开的选择文件窗口中如果选择取消，则系统提示对象错误，意思是没有要导入的文件。请教各位高手，应在下面语句的什么位置上添加什么语句，可以解决已打开选择导入文件窗口后又取消时出现错误提示问题。多谢各位。
Me.OpenFileDialog1.Filter = "Excle文件(*.xls)|*.xls"
If Me.OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
'TextBox11.Text = Me.OpenFileDialog1.FileName
Label11.Text = Me.OpenFileDialog1.FileName
Dim myDataset As New DataSet
Dim ExcelConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" & Label11.Text & "';Extended
Properties=Excel 8.0;"
Dim myDataAdapter As New OleDb.OleDbDataAdapter("SELECT * FROM [Sheet1$]", ExcelConnStr)
Me.Cursor = Cursors.WaitCursor
Try
myDataAdapter.Fill(myDataset)
DataGridView2.DataSource = myDataset.Tables(0)
Catch ex As Exception
MsgBox(ex.Message)
Me.Cursor = Cursors.Default
Exit Sub
End Try
End If
------解决方案--------------------
Label11.Text = Me.OpenFileDialog1.FileName
只要对这个文件名称作个判断就可以了,如果点了取消,这个 Me.OpenFileDialog1.FileName 就是""空值,所以
if Me.OpenFileDialog1.FileName ="" 的时候 直接exit sub
建议把代码写成 if Me.OpenFileDialog1.FileName <> "" then 写成这种不等于空的判断,有好处,
把你要执行的关键代码全包进这个if里面,当用户点"取消"的时候,根本不会执行的.
------解决方案--------------------
我贴一段我的代码,你看看,我刚才细想了一下,好象不对,我还是把自己用的代码给你,你自己研究吧,
文件名要自己"令"它为空!
Dim strFile As String
Try
If SplitContainer5.Panel1Collapsed = False Then
With SaveFileDialog1
.FileName = " "
.Filter = "Excel文件(*.xls)|*.xls "
.FilterIndex = 1
End With
Else
With SaveFileDialog1
.FileName = " "
.Filter = "Jpeg文件(*.jpg)|*.jpg "
.FilterIndex = 1
End With
End If
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.Cancel Then
strFile = ""
Else
strFile = SaveFileDialog1.FileName
End If
If strFile <> "" Then
Application.DoEvents()
If SplitContainer5.Panel1Collapsed = False Then '导出表格
If C4.Rows.Count = 0 Then
MessageBox.Show("没有记录可以导出", "没有可以导出的项目", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Sub
End If
C4.SaveGrid(strFile, FileFormatEnum.Excel, FileFlags.SaveMergedRanges Or FileFlags.IncludeFixedCells)
Dim xlApp As Excel.Application = New Excel.Application
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet
'Set xlApp = Excel.Application
xlApp = CreateObject("excel.application") '不能用上一句，否则excel退不干净
xlApp.Visible = False
xlBook = xlApp.Workbooks.Open(strFile)
xlSheet = xlBook.Worksheets("sheet1")
With xlSheet
.Range(.Cells(1, 1), .Cells(1, C4.Cols.Count)).Font.Name = "微软雅黑"
'设标题为黑体字
'.Range(.Cells(1, 1), .Cells(1, C1.Rows.Count + 2)).Font.Bold = True