SqlHelper: Parameter count does not match Parameter Value count

I had a call to a ExecuteNonQuery that was giving me the error "Parameter count does not match Parameter Value" count.  In my case this error is an incorrect error.  No matter how many times I compared the parameters from the ones in the procedure the number was always the same.

In this case the procedure needed a DateTime parameter, but I was incorrectly trying to give it a string.  Then it would throw that error. Once I put the correct DateTime parameter type it worked properly.

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