Changing the
Background Image:
When we trying to change the
background Image of a control (forms,tabcontrol,groupbox,etc.,) in Windows Form
an error message will be appear like,
Error message: An item with
the same key has already been added
The
Solution is-If you have two Resource.resx file in solution explorer, delete one of the Resource.resx file from them.
Examples:
Delete this Resource.resx file
Don’t Delete this one.
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