Question

我正在使用VB.Net编写一个非常基本的WinForms应用程序，一切顺利，直到我尝试打开一个我通过Stream对象写入tempLocation的Excel文件（工作簿在我的项目资源和构建操作设置为“嵌入式资源”）

以下是导致错误的代码：

Dim xlWBTemp As Excel.Workbook
Dim xlApp As Excel.Application
'// Below resolves to "C:\Users\MacroMan\LockTemplate.xlsm"
Dim tempLocation As String = Environ("USERPROFILE") & "\LockTemplate.xlsm"
...
xlWBTemp = xlApp.Workbooks.Open(tempLocation) '<~~ error here.

我得到的错误是：

System.Runtime.InteropServices.COMException未处理
    错误码= -2146827284
    的HResult = -2146827284
    消息=来自HRESULT的异常：0x800A03EC

我已经检查过，文件肯定会被创建，Excel正在运行，此时已经成功打开了一个工作簿。我根本无法弄清楚这一点，所以任何指针都真的很受欢迎。

更新

文件（tempLocation）确实存在于正确的位置，但是当我在应用程序外部打开它时，Excel会向我显示“找不到的内容”错误。该文件仍然成功打开，一旦打开就没有问题。我现在可以使用CorruptLoad方法中的Workbooks.Open()参数来解决此错误，但我觉得这是盲目地忽略了这个问题。

Answer 1

如果它有帮助这里是一个简单的VB.NET应用程序的例子，我很久以前写了测试VB与C＃的速度。这是创建工作簿并写入工作簿的另一种方式。

Imports Excel = Microsoft.Office.Interop.Excel

Public Class Form1

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Dim xlApp As New Excel.Application
        Dim xlWorkBook As Excel.Workbook
        Dim xlWorkSheet As Excel.Worksheet
        Dim misValue As Object = System.Reflection.Missing.Value

        xlWorkBook = xlApp.Workbooks.Add(misValue)
        xlWorkBook.Application.Visible = True
        xlWorkBook.Application.ScreenUpdating = False

        xlWorkSheet = xlWorkBook.Sheets("sheet1")
        xlWorkSheet.SaveAs("C:\\vbexcel.xlsx")

        Dim l As Long
        l = 1
        Do While l < 500
            'xlWorkSheet.Cells(l, 1) = l
            xlWorkSheet.Range("A" & l).Value = l
            'xlWorkSheet.Cells(l, 2) = l
            'xlWorkSheet.Cells(l, 3) = l
            l = l + 1
        Loop

        xlWorkBook.Application.ScreenUpdating = True
        xlWorkBook.RefreshAll()
        xlWorkBook.Save()

        'xlWorkBook.Close()
        'xlApp.Quit()

        releaseObject(xlApp)
        releaseObject(xlWorkBook)
        releaseObject(xlWorkSheet)

        MsgBox("Done")
    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

WinForms COM Exception打开Excel工作簿

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