MigraDoc - Setting Cell Colour from Hex

Question

Have a HEX colour code string in the database ("#ADD8E6") and I want to use this to change the background colour of a MigraDoc cell. I have found Color.Parse() function, however it isn't changing the colour of my cell. I have had to do the following:

string colourHex = (database.HexCode).Replace("#", "0x");
var colourObject = MigraDoc.DocumentObjectModel.Color.Parse(colourHex);

Cell.Shading.Color = colourObject;

I know that the Cell.Shading.Color is correct because if I apply Cell.Shading.Color = Colors.AliceBlue then the cell does change colour as expected. I understand the Color.Parse requires the HEX code to start with 0x rather than #. I tried using the # and it failed... At least with what I have got it is rendering... just not with my colour.

I think your code is correct, so something you are assuming must be wrong. — NetMage, Mar 02 '18 at 23:36
I think the question is on-topic and provides enough information - at least to those familiar with MigraDoc. Several senseless question never got closed (my close votes expired). — I liked the old Stack Overflow, Mar 03 '18 at 12:39
Your question inspired me to enhance the `Color.Parse` method (see my answer). Thanks for asking your question. — I liked the old Stack Overflow, Apr 23 '18 at 20:41

I liked the old Stack Overflow · Accepted Answer · 2018-04-23T20:31:40.617

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You have to replace "#" with "0xff" to get what you want.

With your short numbers (three components only) the alpha channel will always be 0 and the colour will be completely transparent. With 0xff followed by six hex digits for the RGB colours you get a colour with full opacity.

Update: With the current version of MigraDoc 1.50 (beta 5b or later) you can also use the hash sign followed by 3, 6, or 8 hex digits. 8 digits include the alpha channel, with 3 or 6 digits an alpha setting of FF is used.
With the new version, the code #ADD8E6 will have the expected effect.
Nothing has changed when the 0x prefix is used.

edited Apr 23 '18 at 20:31

answered Mar 03 '18 at 08:59

I liked the old Stack Overflow

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Amazing - many thanks for that! Worked perfectly...! Not sure why this is considered 'Off-Topic'?? – CJH Mar 03 '18 at 22:16

MigraDoc - Setting Cell Colour from Hex

1 Answers1