Disabled form inputs do not appear in the request

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Elements with the disabled attribute are not submitted or you can say their values are not posted (see the second bullet point under Step 3 in the HTML 5 spec for building the form data set).

I.e.,

<input type="textbox" name="Percentage" value="100" disabled="disabled" />

FYI, per 17.12.1 in the HTML 4 spec:

  1. Disabled controls do not receive focus.
  2. Disabled controls are skipped in tabbing navigation.
  3. Disabled controls cannot be successfully posted.

You can use readonly attribute in your case, by doing this you will be able to post your field’s data.

I.e.,

<input type="textbox" name="Percentage" value="100" readonly="readonly" />

FYI, per 17.12.2 in the HTML 4 spec:

  1. Read-only elements receive focus but cannot be modified by the user.
  2. Read-only elements are included in tabbing navigation.
  3. Read-only elements are successfully posted.

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