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要与Excel文件进行数据交互,可以使用ListBox控件的Items属性来添加、删除和编辑项,并使用Excel对象模型来读取和写入Excel文件中的数据。以下是一个示例代码,演示如何将ListBox控件的项与Excel文件进行数据交互:
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Dim xlApp As New Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
xlWorkBook = xlApp.Workbooks.Open("C:\path\to\your\file.xlsx")
xlWorkSheet = xlWorkBook.Sheets(1)
'将Excel文件中的数据添加到ListBox控件中
For i As Integer = 1 To xlWorkSheet.Cells(1, 1).End(Excel.XlDirection.xlDown).Row
ListBox1.Items.Add(xlWorkSheet.Cells(i, 1).Value)
Next
End Sub
Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click
'将ListBox控件中的项保存到Excel文件中
For i As Integer = 0 To ListBox1.Items.Count - 1
xlWorkSheet.Cells(i + 1, 1).Value = ListBox1.Items(i)
Next
xlWorkBook.Save()
End Sub
Private Sub Form1_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing
'关闭Excel应用程序
xlWorkBook.Close()
xlApp.Quit()
ReleaseObject(xlWorkSheet)
ReleaseObject(xlWorkBook)
ReleaseObject(xlApp)
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
End Class
在这个示例中,我们首先在Form_Load事件中打开Excel文件并将其数据添加到ListBox控件中。然后在Save按钮的Click事件中,我们将ListBox控件中的项保存到Excel文件中。最后在Form_FormClosing事件中关闭Excel应用程序并释放资源。
请注意,此示例使用了Microsoft.Office.Interop.Excel命名空间来与Excel文件进行交互。请确保你的计算机上已安装Microsoft Office,并在项目中引用了Microsoft Excel 16.0 Object Library。
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