Curious if you save a PhotoShop document ... using the Save for Web option
.... as a 24 bit png file with transparency enabled, and then assign the png
file as the Image of a PictureBox control if the underlying bitmap is in 32
bit per pixel ARGB as Bob Powell emphasizes is the most desireable format
for image performance.

thanks, Bill Woodruff

[quoted text, click to view]
Curious if you save a PhotoShop document ... using the Save for Web option
.... as a 24 bit png file with transparency enabled, and then assign the png
file as the Image of a PictureBox control if the underlying bitmap is in 32
bit per pixel ARGB as Bob Powell emphasizes is the most desireable format
for image performance.

thanks, Bill Woodruff

fyi : a PhotoShop CS2 file saved as .png 24 bit with transparency enabled :
when set as the Image property of a .NET PictureBox has a pixel format of :

Format24bppRgb

best, Bill