我是vb.net和outlook加载项中的新手,正在开发一个项目来构建一个Outlook加载项(使用VisualStudio 2017的VSTO),我在这里得到了这个错误即使经过数小时的谷歌搜索,任何线索,可能是我没有正确的方向。这就是为什么我来这里寻求你的帮助。感谢
以下是我遇到的错误,并且我已在错误出现的代码中指出该行。
错误:System.Runtime.InteropServices.COMExceptions:尝试的操作失败。无法找到对象。
更新
我正在测试一下,发现如果我不在这行dFolder.Name = "X" + dName
,dName = dFolder.Name
中重新命名根文件夹,而是在Outlook添加数据文件部分手动重命名名称,然后完整功能正常,没有任何错误。
注意:此代码的目的是将电子邮件从一个文件夹复制到另一个文件夹,其中两个根文件夹名称相同,因为目标文件夹只是源文件夹的镜像副本而且此电子邮件是如果两个文件夹名称相同,则不复制,这就是为什么我在添加到Store Session时必须重命名目标文件夹,以便系统可以将源文件夹和目标文件夹识别为两个不同的位置。我不知道为什么它没有获得dFolders = oNspace.Folders.Item(dName).Folders
中的重命名值。请帮忙。
即可。
Public Shared Sub SetSrcAndDst(Src As String, Dst As String)
Dim oApp As Outlook.Application
Dim oNspace As Outlook.NameSpace
Dim sFolders As Outlook.Folders
Dim sFolder As Outlook.Folder
oApp = Globals.ThisAddIn.Application
oNspace = oApp.GetNamespace("MAPI")
sFolders = oNspace.Folders.Item(Src).Folders
Dim oStores As Outlook.Stores
Dim oStore As Outlook.Store
Dim dPath As String
Dim dName As String
Dim dFolders As Outlook.MAPIFolder
Dim dFolder As Outlook.MAPIFolder
oStores = oApp.Session.Stores
oNspace.AddStore(Dst)
dName = ""
For Each oStore In oStores
dFolder = oStore.GetRootFolder
dPath = oStore.FilePath
If dPath = Dst Then
dName = dFolder.FolderPath
dName = dName.TrimStart({"\"c})
dFolder.Name = "X" + dName
dName = dFolder.Name
End If
Next
'''
''' Getting error in this below line (dFolders = oNspace.Folders.Item(dName).Folders)
''' System.Runtime.InteropServices.COMExceptions:
''' The attempted operation failed. An object could not be found.
'''
dFolders = oNspace.Folders.Item(dName).Folders
For Each sFolder In sFolders
For Each dFolder In dFolders
If sFolder.Name = dFolder.Name Then
Call CopyMail(sFolder, dFolder)
End If
Next
Next
End Sub
(适用$除外).StackTrace
at Microsoft.Office.Interop.Outlook.FoldersClass.get_Item(Object Index)
at AutoBackup.ThisAddIn.SetSrcAndDst(String Src, String Dst) in E:\AutoBackup\ThisAddIn.vb:line 56
at AutoBackup.SettingsForm.PstConfirmBtn_Click(Object sender, EventArgs e) in E:\AutoBackup\SettingsForm.vb:line 37
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
答案 0 :(得分:1)
错误非常明确 - 具有给定名称的文件夹不存在。
作为测试,遍历所有根文件夹以确保具有给定名称的文件夹确实存在:
for each vFolder in oNspace.Folders
MsgBox fFolder.Name
next