c write text on bitmap

Question

I have following problem  I want to make some graphics in c  windows form   I want to read bitmap to my program and after it write some text on this bitmap  In the end I want this picture load to pictureBox  And it s my question  How can I do it   example  how must it work   Bitmap a   new Bitmap   path picture bmp    a makeTransparent         a writeText  some text   positionX  positionY   pictuteBox1 Image   a    Is it possible do to

User · Answer

You need to use the Graphics class in order to write on the bitmap   Specifically  one of the DrawString methods   Bitmap a   new Bitmap   path picture bmp     using Graphics g   Graphics FromImage a       g DrawString           requires font  brush etc    pictuteBox1 Image   a

User · Answer

var bmp   new Bitmap   path picture bmp    using  Graphics g   Graphics FromImage  bmp           g DrawString            picturebox1 Image   bmp

User · Answer

Bitmap bmp   new Bitmap  filename bmp     RectangleF rectf   new RectangleF 70  90  90  50    Graphics g   Graphics FromImage bmp    g SmoothingMode   SmoothingMode AntiAlias  g InterpolationMode   InterpolationMode HighQualityBicubic  g PixelOffsetMode   PixelOffsetMode HighQuality  g DrawString  yourText   new Font  Tahoma  8   Brushes Black  rectf    g Flush     image Image bmp

User · Answer

Very old question  but just had to build this for an app today and found the settings shown in other answers do not result in a clean image  possibly as new options were added in later  Net versions    Assuming you want the text in the centre of the bitmap  you can do this      Load the original image Bitmap bmp   new Bitmap  filename bmp        Create a rectangle for the entire bitmap RectangleF rectf   new RectangleF 0  0  bmp Width  bmp Height       Create graphic object that will draw onto the bitmap Graphics g   Graphics FromImage bmp       ------------------------------------------    Ensure the best possible quality rendering    ------------------------------------------    The smoothing mode specifies whether lines  curves  and the edges of filled areas use smoothing  also called antialiasing       One exception is that path gradient brushes do not obey the smoothing mode      Areas filled using a PathGradientBrush are rendered the same way  aliased  regardless of the SmoothingMode property  g SmoothingMode   SmoothingMode AntiAlias      The interpolation mode determines how intermediate values between two endpoints are calculated  g InterpolationMode   InterpolationMode HighQualityBicubic      Use this property to specify either higher quality  slower rendering  or lower quality  faster rendering of the contents of this Graphics object  g PixelOffsetMode   PixelOffsetMode HighQuality      This one is important g TextRenderingHint   TextRenderingHint AntiAliasGridFit      Create string formatting options  used for alignment  StringFormat format   new StringFormat         Alignment   StringAlignment Center      LineAlignment   StringAlignment Center        Draw the text onto the image g DrawString  yourText   new Font  Tahoma  8   Brushes Black  rectf  format       Flush all graphics changes to the bitmap g Flush        Now save or use the bitmap image Image   bmp    References   https   msdn microsoft com en-us library system drawing graphics smoothingmode v vs 110  aspx https   msdn microsoft com en-us library system drawing drawing2d interpolationmode v vs 110  aspx https   msdn microsoft com en-us library system drawing graphics pixeloffsetmode v vs 110  aspx https   msdn microsoft com en-us library system drawing graphics textrenderinghint v vs 110  aspx https   msdn microsoft com en-us library system drawing stringformat v vs 110  aspx https   msdn microsoft com en-us library 21kdfbzs v vs 110  aspx

User · Answer

If you want wrap your text  then you should draw your text in a rectangle   RectangleF rectF1   new RectangleF 30  10  100  122   e Graphics DrawString text1  font1  Brushes Blue  rectF1     See  https   msdn microsoft com en-us library baw6k39s v vs 110  aspx

[c#] c# write text on bitmap

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