Error in foreach statement cannot operate on variable of type

Ashok Shanmugavel

Hello,

I have a requirement to unread email from outlook365 using C#. For this, i am using Exchange web service (EWS). When I read emails, i am getting an error in the below line.(highlighted as bold)

foreach(EmaiMessage email in _service.FindItems(WellKnownFolderName.Inbox, new ItemView(100)))

{

}

Error : foreach statement cannot operate on variable of type 'Task>' because 'Task>' does not contain a public instance defintion for 'GetEnumerator'

DId i do anything wrong? Please suggest me.

Thanks!

8 Replies

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Ashok Shanmugavel4y ago
Thanks,

The issue has been resolved. I am not getting an error now. The issue is that I installed NuGet package Microsoft.Exchange.WebServices.NETStandard , rather than Microsoft.Exchange.WebServices by Microsoft;

I installed Microsoft.Exchange.WebServices. The error is not showing now.

Appreciate yours help. Thanks!
Sachin Singh4y ago
1. foreach(EmaiMessage email in await _service.FindItems(WellKnownFolderName.Inbox, new ItemView(100)))
3. {
} // test await works or not

Ashok Shanmugavel4y ago

No, I am getting another error in the Items.

var emailMessages = findResults.Items.Cast(); --> debugger is showing an error in the Items.

Error : CS1061 : 'Task>' does not contain a defintion for 'Items' and no accessible extension method 'Items' accepting a first argument of type 'Task>' could be found(are you missing a using directive or an assembly reference?)

Muhammad Imran Ansari4y ago

Try the following code:

var findResults = _service.FindItems(WellKnownFolderName.Inbox, new ItemView(100));
var emailMessages = findResults.Items.Cast();

Ashok Shanmugavel4y ago

Yes, I tried the second code snippet and i am getting an another error.

Error : CS0029 : Cannot implicitly covert type 'System.Threading.Tasks.Task>' to 'Microsoft.Exchange.WebServices.Data.FindItemsResults

Thanks!

Muhammad Imran Ansari4y ago

Have you tried the second code snippet?

Ashok Shanmugavel4y ago

Thanks for your reply Muhammad. When i use the below code, I am getting the error.

foreach(EmaiMessage email in _service.FindItems(WellKnownFolderName.Inbox, new ItemView(100)).Items)
{
// Your Code
}

I am included all the namespace but still getting this error.

Thanks!

Muhammad Imran Ansari4y ago

There is no iterator/GetEnumerator() method on FindItems method. Change your foreach like:

foreach(EmaiMessage email in _service.FindItems(WellKnownFolderName.Inbox, new ItemView(100)).Items)
{
// Your Code
}

OR use the code like:

// First send the request to fetch the Inbox and get the results.
FindItemsResults findResults = _service.FindItems(WellKnownFolderName.Tasks, new ItemView(100));
// Process each item as per typr.
foreach (Item myItem in findResults.Items)
{
if (myItem is EmailMessage)
Console.WriteLine((myItem as EmailMessage).Subject);
else if (myItem is MeetingRequest)
Console.WriteLine((myItem as MeetingRequest).Subject);
else
// Else handle other item types.
}