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excel - How can fill I cells A1:A5 with a color using C#?

I have the following code:

Excel.Range chartRange;
chartRange = xlWorkSheet.get_Range("A3", "R3");

I want to fill this range of cells with a color. I have already tried with:

System.Drawing.Color = "yellow"

but it is throwing an exception that an object reference is required.

How can I fix my code to fill these cells with a color?

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Try this:

chartRange.Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Yellow);

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