I'm on a new laptop, working in Visual Studio 2015 on a SQL Server Integration Services package.
In previous versions of Visual Studio there are several options in the Enumerator configuration section, like this...
In VS 2015, that section is blank and I cannot populate it with a data set.
I have updated SSDT and rebooted.
You have a problem is your visual studio. (below a screenshot of ADo enumerator from my computer , using visual studio 2015)
Try running visual studio in safe mode so if this was caused by an add-on it will be fixed. just run this command
devenv.exe /safemode
If not working Try repairing your SQL Server Data Tools installation or Download the Latest release
I had the same issue and I resolved the problem by selecting Foreach File Enumerator option under collection. By default under Collections >> Foreach Loop Editor >>> Enumerator was set to foreach Item Enumerator as shown below
Default Config for Foreach Loop Container
Instead of "Foreach Item Container" aka the default value, I clicked on it and selected Foreach File Enumerator option and that resolved my problem. Please see snapshot below
来源:https://stackoverflow.com/questions/43595565/missing-enumerator-in-foreach-loop-editor