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vb.net表格导出 vb导出excel( 五 )

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End If
Next j
Next i
End Sub
VB.net中把datagridview中的数据导出到电子表格，表格导出后出现"未将对象引用设置到对象的实例 。以下是我以前百度找的资料 希望对你有用 你读取DataGridView到DataGrid然后直接调用函数即可
Public Function ExportXLsD(ByVal datagrid As DataGrid) ', ByVal Title As String)
'Dim Mytable As New DataTable
'Mytable = CType(datagrid.DataSource, DataTable)
If mytable Is Nothing Then
MessageBox.Show("没有记录不能导出数据", "PurpleStar", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Function
End If
If mytable.Rows.Count0 Then
Dim MyFileName As String
Dim FileName As String
With SaveFileDialog1
.AddExtension = True '如果用户忘记添加扩展名 ， 将自动家上
.DefaultExt = "xls" '默认扩展名
.Filter = "Excel文件(*.xls)|*.xls"
.Title = "文件保存到"
If .ShowDialog = DialogResult.OK Then
FileName = .FileName
End If
End With
MyFileName = Microsoft.VisualBasic.Right(FileName, 4)
If MyFileName = "" Then
Exit Function
End If
If MyFileName = ".xls" Or MyFileName = ".XLS" Then
Dim FS As FileStream = New FileStream(FileName, FileMode.Create)
Dim sw As StreamWriter = New StreamWriter(FS, System.Text.Encoding.Default)
sw.WriteLine(vbTabFileNamevbTabDate.Now)
Dim i, j As Integer
Dim str As String = ""
For i = 0 To mytable.Columns.Count - 1
str = mytable.Columns(i).Caption
sw.Write(strvbTab)
Next
sw.Write(vbCrLf)
For j = 0 To mytable.Rows.Count - 1
For i = 0 To mytable.Columns.Count - 1
Dim strColName, strRow As String
strRow = IIf(mytable.Rows(j).Item(i) Is DBNull.Value, "", mytable.Rows(j).Item(i))
sw.Write(strRowvbTab)
Next
sw.Write(vbLf)
Next
sw.Close()
FS.Close()
MessageBox.Show("数据导出成功！", "PurpleStar", MessageBoxButtons.OK, MessageBoxIcon.Information)
Else
Exit Function
End If
Else
MessageBox.Show("没有记录不能导出数据", "PurpleStar", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
End Function
Private Sub OK_Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK_Button.Click
Dim saveExcel As SaveFileDialog
saveExcel = New SaveFileDialog
saveExcel.Filter = "Excel文件(.xls)|*.xls"
Dim filename As String
If saveExcel.ShowDialog = Windows.Forms.DialogResult.Cancel Then Exit Sub
filename = saveExcel.FileName
Dim excel As Excel.Application
excel = New Excel.Application
excel.DisplayAlerts = False
excel.Workbooks.Add(True)
excel.Visible = False
Dim i As Integer
For i = 0 To DataGridView1.Columns.Count - 1
excel.Cells(1, i + 1) = DataGridView1.Columns(i).HeaderText
Next
'设置标题
Dim j As Integer
For i = 0 To DataGridView1.Rows.Count - 1 '填充数据
For j = 0 To DataGridView1.Columns.Count - 1
excel.Cells(i + 2, j + 1) = DataGridView1(j, i).Value
Next
Next
excel.Workbooks(1).SaveCopyAs(filename) '保存
Me.Close()
End Sub
vb.net 输出 excel这里有段VB6.0vb.net表格导出的vb.net表格导出，你可以参考 。
注意添加引用 。
Private Sub Command6_Click()
Dim i, j As Integer
Dim xlApplication As Excel.Application, xlWorkbook As Excel.Workbook, xlSheet
Dim xlApp As Excel.Application
On Error Resume Next
Set xlApplication = GetObject(, "Excel.Application")
Set xlApp = CreateObject("Excel.Application")
If MsgBox("确认将文件信息导出到EXCEL中vb.net表格导出？?", vbExclamation + vbYesNo, "警告") = vbYes Then
If Err.Number0 Then Set xlApplication = CreateObject("Excel.Application")

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