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[英]MySQL + VB.NET - Populate multiple Datagridviews from multiple tables
[英]Formating excel spread sheet export from multiple datagridviews vb.net
我目前正在使用帶有SQL后端的Microsoft Visual Studio 2013。 我正在加載多個DGV,然后嘗試將其導出到Excel電子表格。 但是,我不確定如何格式化此數據。 當我嘗試導出多個DGV時,它們會彼此覆蓋在excel文件的左上角。 有誰知道如何格式化和選擇要在excel電子表格上加載DGV的位置。 我也不希望它們都放在不同的紙上。 這是我的代碼:
Private Sub BtnExcelExport_Click(sender As Object, e As EventArgs) Handles BtnExcelExport.Click
Try
Dim xlapp As Microsoft.Office.Interop.Excel.Application
Dim xlworkbook As Microsoft.Office.Interop.Excel.Workbook
Dim xlworksheet As Microsoft.Office.Interop.Excel.Worksheet
Dim misvalue As Object = System.Reflection.Missing.Value
Dim I As Integer
Dim J As Integer
xlapp = New Microsoft.Office.Interop.Excel.Application
xlworkbook = xlapp.Workbooks.Add(misvalue)
xlworksheet = xlworkbook.Sheets("sheet1")
For I = 0 To DGVJobs.RowCount - 1
For J = 0 To DGVJobs.ColumnCount - 1
For K As Integer = 1 To DGVJobs.Columns.Count
xlworksheet.Cells(1, K) = DGVJobs.Columns(K - 1).HeaderText
xlworksheet.Cells(I + 2, J + 1) = DGVJobs(J, I).Value.ToString()
Next
Next
Next
'Here is my second DGV upload out of a few, this one will write over top of the other
For I = 0 To DGVAssociates.RowCount - 1
For J = 0 To DGVAssociates.ColumnCount - 1
For K As Integer = 1 To DGVAssociates.Columns.Count
xlworksheet.Cells(1, K) = DGVAssociates.Columns(K - 1).HeaderText
xlworksheet.Cells(I + 2, J + 1) = DGVAssociates(J, I).Value.ToString()
Next
Next
Next
xlworksheet.SaveAs("C:\example.xlsx")
xlworkbook.Close()
xlapp.Quit()
releaseobject(xlapp)
releaseobject(xlworkbook)
releaseobject(xlworksheet)
MsgBox("You can find the file C:\example.xlsx")
Dim res As MsgBoxResult
res = MsgBox("Saving completed, would you like to open the file?", MsgBoxStyle.YesNo)
If (res = MsgBoxResult.Yes) Then
Process.Start("C:\example.xlsx")
End If
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Private Sub releaseobject(ByVal obj As Object)
Try
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
obj = Nothing
Catch ex As Exception
obj = Nothing
Finally
GC.Collect()
End Try
End Sub
第二個for循環是我遇到覆蓋問題的地方。 如果任何人都有可以將我發送到良好網站的鏈接,請也將其發布。
為什么您要遍歷兩次列? 最內層的循環是不必要的。
現在,用於指定要在excel中寫入的列的變量在For
的兩組中都從0變為ColumnCount
。 這就是為什么他們互相覆蓋的原因。
嘗試這個:
For I = 0 To DGVJobs.RowCount - 1
For J = 0 To DGVJobs.ColumnCount - 1
xlworksheet.Cells(1, J + 1) = DGVJobs.Columns(J).HeaderText
xlworksheet.Cells(I + 2, J + 1) = DGVJobs(J, I).Value.ToString()
Next
Next
For I = 0 To DGVAssociates.RowCount - 1
For J = 0 To DGVAssociates.ColumnCount - 1
xlworksheet.Cells(1, J + 1 + DGVJobs.ColumnCount) = DGVAssociates.Columns(K - 1).HeaderText
xlworksheet.Cells(I + 2, J + 1 + DGVJobs.ColumnCount) = DGVAssociates(J, I).Value.ToString()
Next
Next
(順便說一句,離題;將數據導出到excel的更快方法是先創建一個包含所有數據的數組,然后將其分配到工作表中的相應Range
)
嘗試使用此代碼,那么您肯定會給我發一條感謝消息:)
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.IO
Private Sub ExportToExcel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ExportToExcel.Click
Try
Dim xlapp As Microsoft.Office.Interop.Excel.Application
Dim xlworkbook As Microsoft.Office.Interop.Excel.Workbook
Dim xlworksheet, xlworksheet1 As Microsoft.Office.Interop.Excel.Worksheet
Dim misvalue As Object = System.Reflection.Missing.Value
Dim I As Integer
Dim J As Integer
xlapp = New Microsoft.Office.Interop.Excel.Application
xlworkbook = xlapp.Workbooks.Add(misvalue)
xlworksheet = xlworkbook.Sheets("Sheet1")
For I = 0 To DataGridView_Report.RowCount - 1
For J = 0 To DataGridView_Report.ColumnCount - 1
For K As Integer = 1 To DataGridView_Report.Columns.Count
xlworksheet.Cells(1, K) = DataGridView_Report.Columns(K - 1).HeaderText
xlworksheet.Cells(I + 2, J + 1) = DataGridView_Report(J, I).Value.ToString()
Next
Next
Next
xlworksheet1 = CType(xlworkbook.Worksheets.Add(), Excel.Worksheet)
For I = 0 To DataGridView_Calculation.RowCount - 1
For J = 0 To DataGridView_Calculation.ColumnCount - 1
For K As Integer = 1 To DataGridView_Calculation.Columns.Count
xlworksheet1.Cells(1, K) = DataGridView_Calculation.Columns(K - 1).HeaderText
xlworksheet1.Cells(I + 2, J + 1) = DataGridView_Calculation(J, I).Value.ToString()
Next
Next
Next
xlworksheet.Columns.AutoFit()
xlworksheet1.Columns.AutoFit()
Dim xlRange, xlRange1 As Excel.Range
xlRange = xlworksheet.Range("A1", "N1")
xlRange1 = xlworksheet1.Range("A1", "L1")
xlRange.Columns.Font.Bold = True
xlRange1.Columns.Font.Bold = True
xlworksheet.Name = "My Sheet1"
xlworksheet1.Name = "My Sheet2"
Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter = "Excel Workbook|*.xls|Excel Workbook 2011|*.xlsx"
saveFileDialog1.Title = "Save Excel File"
saveFileDialog1.FileName = "Export " & Now.ToShortDateString & ".xlsx"
saveFileDialog1.ShowDialog()
saveFileDialog1.InitialDirectory = "C:/"
If saveFileDialog1.FileName <> "" Then
Dim fs As System.IO.FileStream = CType(saveFileDialog1.OpenFile(), System.IO.FileStream)
fs.Close()
End If
Dim strFileName As String = saveFileDialog1.FileName
Dim blnFileOpen As Boolean = False
Try
Dim fileTemp As System.IO.FileStream = System.IO.File.OpenWrite(strFileName)
fileTemp.Close()
Catch ex As Exception
blnFileOpen = False
Exit Sub
End Try
If System.IO.File.Exists(strFileName) Then
System.IO.File.Delete(strFileName)
End If
xlworkbook.SaveAs(strFileName)
xlapp.Workbooks.Open(strFileName)
xlapp.Visible = True
Exit Sub
errorhandler:
MsgBox(Err.Description)
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Private Sub releaseobject(ByVal obj As Object)
Try
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
obj = Nothing
Catch ex As Exception
obj = Nothing
Finally
GC.Collect()
End Try
End Sub
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