日期:2009-07-29 浏览次数:20428 次
Adding text to an image in memory | ||
This article covers using the System.Drawing.Bitmap and drawBrush to draw text on a bitmap in memory. You could use this code as a base to create dynamic navigational buttons for your site. | ||
In this code snippet we're going to provide will enable you to add text to an image in memory. One use for this code may be to open a file on the file system and add some text to the image, then stream the image out to the user. This could come in handy if you want to create navigational buttons for your Web site dynamically based on a request or dynamically create Banners via .Net code. The first thing we do in the code is declare a bitmap variable, in this example "bmap". The next line in this example grabs data in the clipboard of the PC. This could very well be any image in memory such as an image file opened from the local file system.
Now that we have a modified image in memory we can save the file to disk and generate a thumbnail image as well to present in the Web page for later viewing.
This code should get you started working with images in memory and maybe provide a base to get started creating dynamic images for your Website. |