Analysis on adding watermarks to Images Using ASP. NET (VB)

ASP. NET (VB) adds watermark text to the image: Specifies the image to add watermark text

 
 

  
  
DimimgAsImage = Image. FromFile (Server. MapPath ("~ /Upload/1.jpg"))
  
  
'Create a bitmap object for drawing operations. You cannot directly operate on a format other than BMP, maybe) 
  
  
DimbitmapAsNewBitmap (343,498)
  
  
'Specifies the font of the text to be drawn. 
  
  
DimfAsNewFont ("", 16, FontStyle. Underline)
  
  
'Text content 
  
  
DimstrAsString = TextBox5.Text
  
  
'Create an object for image plotting 
  
  
DimgAsGraphics = Graphics. FromImage (bitmap)
  
  
'Line Coordinate 
  
  
Dimx1, x2, y1, y2, s1, s2AsInteger
  
  
X1 =CType(TextBox1.Text,Integer)
  
  
X2 =CType(TextBox2.Text,Integer)
  
  
Y1 =CType(TextBox3.Text,Integer)
  
  
Y2 =CType(TextBox4.Text,Integer)
  
  
'Text Coordinate 
  
  
S1 =CType(TextBox6.Text,Integer)
  
  
S2 =CType(TextBox7.Text,Integer)
  
  
'Specifies the drawing range. 
  
  
G. DrawImage (img, 343,498)
  
  
'Draw text 
  
  
G. DrawString (str, f, Brushes. Red, s1, s2)
  
  
'Draw a line 
  
  
G. DrawLine (Pens. White, x1, x2, y1, y2)
  
  
'Save path after painting 
  
  
DimiimgAsString ="~ /Upload/11.jpg" 
  
  
Dimimg1AsString = Server. MapPath (iimg)
  
  
'Jpg image quality parameters 
  
  
DimepAsImaging. EncoderParameters = NewImaging. EncoderParameters
  
  
'Image Quality Value 
  
  
Ep. Param (0) = NewImaging. EncoderParameter (Imaging. Encoder. Quality,CLng(TextBox8.Text ))
  
  
'Reading image content as a stream 
  
  
DimcodecsAsImaging. ImageCodecInfo () = Imaging. ImageCodecInfo. GetImageEncoders
  
  
DimiciAsImaging. ImageCodecInfo
  
  
ForEachcodecAsImaging. ImageCodecInfoIncodecs
  
  
Ifcodec. MimeType ="Image/jpeg"Then 
  
  
Ici = codec
  
  
EndIf
  
  
Next 
  
  
'Save the drawn Image 
  
  
Bitmap. Save (img1, ici, ep)
  
  
Image1.ImageUrl = iimg
  
  
'Release the object 
  
  
G. Dispose ()
  
  
Bitmap. Dispose ()
  
  
Img. Dispose ()
 
 

This section describes how to add watermark text to images of ASP. NET (VB) applications. We hope this will help you.

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