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I have an attribute and i want to load text to the attribute from a resource file.
[IntegerValidation(1, 70, ErrorMessage = Data.Messages.Speed)]
private int i_Speed;
But I keep getting
“An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type”
It works perfectly if i add a string instead of Data.Messages.Text, like:
[IntegerValidation(1, 70, ErrorMessage = "Invalid max speed")]
Any ideas?
Attribute values are hard-coded into the assembly when you compile. If you want to do anything at execution time, you’ll need to use a constant as the key, then put some code into the attribute class itself to load the resource.