问题
I need to set the Folder in my Foreach loop to a variable location. I tried just adding the location to my package configuration, and it acted like it worked, but when I opened the configuration file, it wasn't there.
I had it set to Foreach File Enumerator, with the path hardcoded, and Retrieve fully qualified file name. My variable Mappings have a variable CurrentFile with index 0.
So, I've changed it to a Foreach From Variable Enumerator, with a SourceFiles variable of \server\path*.*. But now it's complaining about that CurrentFile, that the type of value being assigned differs from the variable type (string).
I'm guessing that I need to somehow use the Expressions with the Enumerator on the Collections tab? How?
- General: Foreach Loop Container
- Collection: Foreach From Varialbe Enumerator; Variable is User::SourcePath; Expressions (not used)
- Variable Mappings: Variable User::CurrentFile, Index 0
- Expressions: (not used)
Error: 0xC001F009 at MyPackage: The type of the value being assigned to variable "User::CurrentFile" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object. Error: 0xC001C012 at Foreach Loop Container: ForEach Variable Mapping number 1 to variable "User::CurrentFile" cannot be applied.
回答1:
A co-worker showed me how to get it to work. Do NOT change it to "Foreach from Variable Enumerator", but leave it as "Foreach File Enumerator".
- Collection: Foreach File Enumerator; put in a folder and files in the Enumerator configuration. Under Expressions, set the Directory to a user variable pointing to the directory (it will take precedence to the folder you've entered); set the FileSpec to a user variable pointing to the files (which will take precendence to the Files you've entered).
Directory @[User::SourcePath] (value: \\server\directory) FileSpec @[User::CopyFileName] (value: *.*)
- Variable Mappings: Variable User::Current File, index 0
- Expressions: (not used)
来源：https://stackoverflow.com/questions/5466554/ssis-foreach-loop-folder-as-variable