The oxidation reaction does not cause any change in the double bond of the carbon carbon atoms.
Haloform reaction is one of the particular type of alpha halogenation reaction. The reaction occurs in the methyl Jerome and convert the methyl group into a strong haloform Leaving the group.

Introduction
The haloform reaction is a chemical reaction that involves the oxidation of a methyl ketone to produce a carboxylic acid and a haloform. This reaction is commonly used to identify the presence of a methyl ketone in organic compounds. During the reaction, the carbon-carbon double bond present in the starting material remains unaffected.

Explanation
The haloform reaction proceeds through a series of steps that involve the oxidation of the methyl ketone. However, the double bond present between the carbon atoms in the starting material is not affected due to several reasons:

Stability of the double bond: The carbon-carbon double bond is a strong bond with a high degree of stability. It consists of a sigma bond and a pi bond, which provide a rigid structure to the molecule. This structural stability makes the double bond resistant to oxidation.

Reaction conditions: The haloform reaction is typically carried out under basic conditions, where the reaction mixture is treated with a strong base such as sodium hydroxide (NaOH). Under these conditions, the base attacks the carbonyl carbon of the methyl ketone, leading to the formation of a carboxylate ion. The carboxylate ion then undergoes further reactions to produce the carboxylic acid and the haloform.

Preference for oxidation of the carbonyl group: The carbonyl group (C=O) in the methyl ketone is more susceptible to oxidation compared to the carbon-carbon double bond. This is because the carbonyl group contains an oxygen atom, which is highly electronegative and can readily accept electrons during the oxidation process. In contrast, the carbon-carbon double bond does not contain any electronegative atoms and is therefore less prone to oxidation.

Conclusion
In summary, the haloform reaction does not affect the carbon-carbon double bond present in the starting material due to the stability of the double bond, the reaction conditions, and the preference for oxidation of the carbonyl group. These factors ensure that the double bond remains intact during the oxidation process, allowing for the selective oxidation of the carbonyl group to form the carboxylic acid and the haloform.