InsertParameters.Add Problem with Checkbox -- Visual Basic

I get this error " String was not recognized as a valid Boolean. "

NewsletterOptOutCheckBox is a checkbox within my webform.  I am trying to insert it into a database table along with like 10 other values.  I have tested it with all the other values which are mostly textboxes and it works great.

How do I pass a checkbox from the visual basic code into the ms sql db column "Opt_Out" of type BIT?
DataSource.InsertParameters.Add("Opt_Out", TypeCode.Boolean, NewsletterOptOutCheckBox.ToString())

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DataSource.InsertParameters.Add("Opt_Out", TypeCode.Boolean, NewsletterOptOutCheckBox.Checked)

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HarleySkaterAuthor Commented:
DataSource.InsertParameters.Add("Opt_Out", TypeCode.Boolean, NewsletterOptOutCheckBox.Checked.ToString())

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D'oh! I thought .ToString(), but forgot to put it....
Glad it worked anyway
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