DelayValidation is an important property if you develop a package with dynamic connection string or custom expressions.
In this article, I will be giving an example to show you teh use of DelayValidation property in the package design.
Plot:
A package has File System Task to delete a file from the disk. But, user like to make the functionality dynamic. So, user uses a package variable to refer file name to the task. Let design a package.
Implementation:
Step 1: Create a package, Add File system task and a package variable.
Step 2: Change the File System task property value as given in the below picture.
Step 3: Click ok. You will see the error mark on the task saying variable is empty.
Step 4: Go to File System Task property and change DelayValidation property value to True.
Step 5: Now, error should be disappeared from the design. If you run the package with empty package variable then you will get the error during runtime.
Thanks for reading.
