CODEWITHSUNDEEP
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Hobbit9797
Hobbit9797

Reputation: 35

Bitmap.SetPixel(int x, int y, Color color) throws ArgumentException: Invalid Parameter

if (map[x, y] != null)
save.SetPixel(x, y, System.Drawing.Color.FromArgb(map[x, y].r, map[x, y].g, map[x, y].b));

This code is part of a function where x and y are ints. save is a Bitmap.

save = CreateNonIndexedImage(Bitmap.FromFile("Content/save/map.png"));

map[,] is an array consisting of Tile, which is a class of mine. Tile.r, Tile.g and Tile.b are ints.

Why is this throwing a ArgumentException?

The StackTrace:

   bei System.Drawing.Image.get_Width()
   bei System.Drawing.Bitmap.SetPixel(Int32 x, Int32 y, Color color)
   bei RogueLike.Game1.saveTile(Int32 x, Int32 y) in C:\Users\Niklas\Documents\Visual Studio 2010\Projects\RogueLike\RogueLike\RogueLike\Game1.cs:Zeile 472.

Upvotes: 0

Views: 689

Answers (2)

Andrei
Andrei

Reputation: 56716

According to MSDN, Bitmap.SetPixel does not throw the ArgumentException, however Color.FromArgb does when

red, green, or blue is less than 0 or greater than 255.

Therefore one of map[x, y].r, map[x, y].g or map[x, y].b is outside of the integer interval [0..255].

Upvotes: 2

jgallant
jgallant

Reputation: 11273

My guess is that your image is smaller than your data, causing out of range exceptions in your SetPixel function call.

Upvotes: 0

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