经过数小时的研究，没有找到答案，我想寻求有关该问题的帮助。
我目前正在VB.NET中编写一个表单，该表单可以根据多个comboBox作为条件将粘贴行从excel文件复制到新创建的excel文件中（每个comboxBox代表Excel中的一列）。
当前程序有2种形式：
第一种形式用于浏览和打开Excel文件。
第二种形式用于复制/粘贴新的excel文件中的数据，具体取决于comboBox。
我无法找到与comboBox关联的内容，但到目前为止，这仍然是我所做的：
第一种形式
Public Class Form1
Public excel As Microsoft.Office.Interop.Excel.Application
Private Sub Browse1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Browse1.Click
ofd.Filter = "Excel Files(.xls)|*.xls|Excel Files(.xlsx)|*.xlsx|Excel Files(*.xlsm)|*.xlsm"
If (ofd.ShowDialog() = DialogResult.OK) Then
TextBox1.Text = ofd.FileName
End If
End Sub
Private Sub Comfirm1_Click(sender As Object, e As EventArgs) Handles Comfirm1.Click
Dim excel As New Microsoft.Office.Interop.Excel.Application
Dim wb As Microsoft.Office.Interop.Excel.Workbook
Dim FinderForm As New Form2
If TextBox1.Text = "" Then
MessageBox.Show("Wait!", "Please pick your file first!", MessageBoxButtons.OKCancel)
Else
wb = excel.Workbooks.Open(TextBox1.Text)
excel.Visible = False
wb.Activate()
FinderForm.Show()
Me.Hide()
End If
End Sub
End Class
第二张表格
Public Class Form2
Public excel As Microsoft.Office.Interop.Excel.Application
Private Sub BBack_Click(sender As Object, e As EventArgs) Handles BBack.Click
Dim FinderFile As New Form1
excel.Quit()
FinderFile.Show()
Me.Close()
End Sub
Private Sub ComboBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox1.SelectedIndexChanged
End Sub
End Class
在此先感谢您的帮助！告诉我您是否需要项目文件。
修改
到目前为止，这是我的进步：
第一表格
Imports Microsoft.Office.Interop.Excel
Public Class Form1
Public Property ExcelApp As Application
Public Property ExcelWorkBook As Workbook
Private Sub Browse1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Browse1.Click
ofd.Filter = "Excel Files(.xls)|*.xls|Excel Files(.xlsx)|*.xlsx|Excel Files(*.xlsm)|*.xlsm"
If (ofd.ShowDialog() = DialogResult.OK) Then
TextBox1.Text = ofd.FileName
End If
End Sub
Private Sub Comfirm1_Click(sender As Object, e As EventArgs) Handles Comfirm1.Click
If TextBox1.Text = "" Then
MessageBox.Show("Wait!", "Please pick your file first!", MessageBoxButtons.OKCancel)
Else
ExcelApp = New Application
ExcelWorkBook = ExcelApp.Workbooks.Open(TextBox1.Text)
ExcelApp.Visible = False
ExcelWorkBook.Activate()
Dim FinderForm As New Form2(ExcelApp)
FinderForm.Show()
Me.Hide()
End If
End Sub
End Class
第二张表格
Imports Microsoft.Office.Interop.Excel
Public Class Form2
Property ExcelApp As Application
Property ExcelWorkBook As Workbook
Sub New(ByRef App As Application)
InitializeComponent()
ExcelApp = App
End Sub
Private Sub BBack_Click(sender As Object, e As EventArgs) Handles BBack.Click
ExcelApp.Quit()
System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelApp)
ExcelApp = Nothing
Form1.Show()
Me.Close()
End Sub
Private Function GetDataFromExcelByCom(ByVal Optional hasTitle As Boolean = False) As DataTable
Dim sheets As ExcelApp.Sheets
Dim oMissiong As Object = System.Reflection.Missing.Value
Dim workbook As ExcelWorkbook = Nothing
Dim dt As DataTable = New DataTable()
Try
If ExcelApp Is Nothing Then Return Nothing
workbook = ExcelApp.Workbooks.Open(excelFilePath, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong, oMissiong)
sheets = workbook.Worksheets
Dim worksheet As ExcelApp.Worksheet = sheets(1)
Dim ji As Integer = CType(12, Integer)
If worksheet Is Nothing Then Return Nothing
Dim iRowCount As Integer = worksheet.UsedRange.Rows.Count
Dim iColCount As Integer = worksheet.UsedRange.Columns.Count
For i As Integer = 0 To iColCount - 1
Dim name = "column" & i
If hasTitle Then
Dim txt = (CType(worksheet.Cells(1, i + 1), ExcelApp.Range)).Text.ToString()
If Not String.IsNullOrWhiteSpace(txt) Then name = txt
End If
While dt.Columns.Contains(name)
name = name & "_1"
End While
dt.Columns.Add(New DataColumn(name, GetType(String)))
Next
Dim range As ExcelApp.Range
Dim rowIdx As Integer = If(hasTitle, 2, 1)
For iRow As Integer = rowIdx To iRowCount
Dim dr As DataRow = dt.NewRow()
For iCol As Integer = 1 To iColCount
range = CType(worksheet.Cells(iRow, iCol), ExcelApp.Range)
dr(iCol - 1) = If((range.Value2 Is Nothing), "", range.Text.ToString())
Next
dt.Rows.Add(dr)
Next
Return dt
Catch
Return Nothing
Finally
workbook.Close(False, oMissiong, oMissiong)
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook)
workbook = Nothing
ExcelWorkBook.Close()
ExcelWorkBook = Nothing
End Try
End Function
Private Sub ComboBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox1.SelectedIndexChanged
End Sub
Private Sub ComboBox2_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox2.SelectedIndexChanged
End Sub
Private Sub ComboBox3_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox3.SelectedIndexChanged
End Sub
Private Sub ComboBox4_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox4.SelectedIndexChanged
End Sub
Private Sub ComboBox5_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox5.SelectedIndexChanged
End Sub
Private Sub ComboBox6_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox6.SelectedIndexChanged
End Sub
End Class
我认为这解决了多个excel问题。