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新的VB程序員在這裏。我正在使用下面的方法將SQL表導出到Excel文件。但是，當我在Excel中創建文件時，由於被轉換爲數字而不是文本，我的主鍵的前導零缺失。這是由於數據表中的信息來自excel。我想知道我能做些什麼來保持我的領先零。SQL中導出零缺少導出到Excel循環
僅供參考 - 我的主鍵是6位數字，只有少數人在開始時缺少一個0。還有很多其他的行和列在第一列完成後都可以放入excel文件。它只是我需要以某種方式更改格式的第一列主鍵。
另外，我使用這個excel文件，然後上傳到SQL和一些主鍵上的缺少0 maks我的程序創建一個新的記錄。
我想主要的變化可以在這裏發生，但我無法弄清楚如何做到這一點：
'Export the Columns to excel file
For Each dc In datatableMain.Columns
colIndex = colIndex + 1
oSheet.Cells(1, colIndex) = dc.ColumnName
Next
For Each dr In datatableMain.Rows
rowIndex = rowIndex + 1
colIndex = 1
For Each dc In datatableMain.Columns
colIndex = colIndex + 1
oSheet.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)
Next
Next
完整的代碼下面：
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim dataAdapter As New SqlClient.SqlDataAdapter()
Dim dataSet As New DataSet
Dim command As New SqlClient.SqlCommand
Dim datatableMain As New System.Data.DataTable()
Dim connection As New SqlClient.SqlConnection
connection.ConnectionString = "Server=myserver;Database=mydatabase;User Id=xxxx;Password=xxxxx"
command.Connection = connection
command.CommandType = CommandType.Text
'You can use any command select
command.CommandText = "Select * from MYTABLE"
dataAdapter.SelectCommand = command
Dim f As FolderBrowserDialog = New FolderBrowserDialog
Try
If f.ShowDialog() = DialogResult.OK Then
'This section help you if your language is not English.
System.Threading.Thread.CurrentThread.CurrentCulture = _
System.Globalization.CultureInfo.CreateSpecificCulture("en-US")
Dim oExcel As Excel.Application
Dim oBook As Excel.Workbook
Dim oSheet As Excel.Worksheet
oExcel = CreateObject("Excel.Application")
oBook = oExcel.Workbooks.Add(Type.Missing)
oSheet = oBook.Worksheets(1)
Dim dc As System.Data.DataColumn
Dim dr As System.Data.DataRow
Dim colIndex As Integer = 0
Dim rowIndex As Integer = 0
'Fill data to datatable
connection.Open()
dataAdapter.Fill(datatableMain)
connection.Close()
'Export the Columns to excel file
For Each dc In datatableMain.Columns
colIndex = colIndex + 1
oSheet.Cells(1, colIndex) = dc.ColumnName
Next
For Each dr In datatableMain.Rows
rowIndex = rowIndex + 1
colIndex = 1
For Each dc In datatableMain.Columns
colIndex = colIndex + 1
oSheet.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)
Next
Next
'Set final path
Dim fileName As String = "\" + fname.Text + ".xlsx"
Dim finalPath = f.SelectedPath + fileName
txtPath.Text = finalPath
oSheet.Columns.AutoFit()
'Save file in final path
oBook.SaveAs(finalPath, Excel.XlFileFormat.xlOpenXMLWorkbook, Type.Missing, _
Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlExclusive, _
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing)
'Release the objects
ReleaseObject(oSheet)
oBook.Close(False, Type.Missing, Type.Missing)
ReleaseObject(oBook)
oExcel.Quit()
ReleaseObject(oExcel)
'Some time Office application does not quit after automation:
'so i am calling GC.Collect method.
GC.Collect()
MessageBox.Show("Exported!")
End If
Catch ex As Exception
MessageBox.Show(ex.Message, "Warning", MessageBoxButtons.OK)
End Try
End If
End Sub
Private Sub ReleaseObject(ByVal o As Object)
Try
While (System.Runtime.InteropServices.Marshal.ReleaseComObject(o) > 0)
End While
Catch
Finally
o = Nothing
End Try
End Sub
嘗試設置單元格的NumberFormat屬性設置爲「000000」。 – Lauren
我會怎麼做只爲包含主鍵的第一列？我的所有其他列完全格式化。 – Infinite8Self
Telestia建議的方式最好。您正在設置Excel列的格式。設置爲「@」用於文本格式，將其設置爲「000000」會給您一個前導0的數字，填充到6個位置。 – Lauren