Question

我正在尝试打开放在Windows窗体上的WorkBookView（在下面给出的代码中命名为wkbMain）中的现有文件。我使用以下代码：

Private Sub MenuItemOpen_Click(sender As Object, e As EventArgs)
    Dim lObjDialog As New OpenFileDialog

    wkbMain.GetLock()

    Try
        If lObjDialog.ShowDialog() = DialogResult.OK Then
            wkbMain = SpreadsheetGear.Factory.GetWorkbook(lObjDialog.FileName, System.Globalization.CultureInfo.CurrentCulture)
        End If
    Catch ex As Exception

    Finally
        wkbMain.ReleaseLock()
    End Try
End Sub

但是作业

wkbMain = SpreadsheetGear.Factory.GetWorkbook(lObjDialog.FileName, System.Globalization.CultureInfo.CurrentCulture)`)

抛出异常：

无法投射类型＆＃39;ᢷ＆＃39;输入＆＃39; SpreadsheetGear.Windows.Forms.WorkbookView＆＃39;。

请建议解决方案

Answer 1

您需要将WorkbookView。ActiveWorkbook属性设置为Factory.GetWorkbook（...）返回的对象，而不是WorkbookView对象本身。例如：

wkbMain.ActiveWorkbook = SpreadsheetGear.Factory.GetWorkbook(lObjDialog.FileName, 
    System.Globalization.CultureInfo.CurrentCulture))

“使用VB.Net在Spreadsheetgear中打开现有文件

1 个答案: