add watermark to image diagonally

Hello there !

Try this links : http://www.aspsnippets.com/Articles/Create-Add-Watermark-Text-to-Images-Photo-in-ASPNet-using-C-and-VBNet.aspx

or might be this works :

protected void Upload(object sender, EventArgs e)

{

string watermarkText = "© ASPSnippets.com";

//Get the file name.

string fileName = Path.GetFileNameWithoutExtension(FileUpload1.PostedFile.FileName) + ".png";

//Read the File into a Bitmap.

using (Bitmap bmp = new Bitmap(FileUpload1.PostedFile.InputStream, false))

{

using (Graphics grp = Graphics.FromImage(bmp))

{

//Set the Color of the Watermark text.

Brush brush = new SolidBrush(Color.FromArgb(99, Color.Black));

//Set the Font and its size.

Font font = new System.Drawing.Font("Arial", 30, FontStyle.Bold, GraphicsUnit.Pixel);

//Determine the size of the Watermark text.

SizeF textSize = new SizeF();

textSize = grp.MeasureString(watermarkText, font);

//Position the text and draw it on the image.

Point position = new Point((bmp.Width / 2), (bmp.Height / 2));

//Rotate and Draw

grp.TranslateTransform(position.X / 2, position.Y / 2);

grp.RotateTransform(-45);

grp.DrawString(watermarkText, font, brush, position.X - ((int)textSize.Width + 10), position.Y - ((int)textSize.Height + 10));

grp.ResetTransform();

using (MemoryStream memoryStream = new MemoryStream())

{

//Save the Watermarked image to the MemoryStream.

bmp.Save(memoryStream, ImageFormat.Png);

memoryStream.Position = 0;

//Start file download.

Response.Clear();

Response.ContentType = "image/jpg";

Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);

//Write the MemoryStream to the Response.

memoryStream.WriteTo(Response.OutputStream);

Response.Flush();

Response.Close();

Response.End();

}

2 Replies

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Muralishankar Sundaram11y ago
Hi Muthu,

My suggestion,

prepare a 'position:absolute' div element with the watermark text and pace it inside the image
apply the transform(rotate) CSS property for make diagonally.

please refer the

http://www.w3schools.com/cssref/css3_pr_transform.asp
0
Nilesh Jadav11y ago
Hello there !

Try this links : http://www.aspsnippets.com/Articles/Create-Add-Watermark-Text-to-Images-Photo-in-ASPNet-using-C-and-VBNet.aspx

or might be this works :

protected void Upload(object sender, EventArgs e)
{
string watermarkText = "© ASPSnippets.com";

//Get the file name.
string fileName = Path.GetFileNameWithoutExtension(FileUpload1.PostedFile.FileName) + ".png";

//Read the File into a Bitmap.
using (Bitmap bmp = new Bitmap(FileUpload1.PostedFile.InputStream, false))
{
using (Graphics grp = Graphics.FromImage(bmp))
{
//Set the Color of the Watermark text.
Brush brush = new SolidBrush(Color.FromArgb(99, Color.Black));

//Set the Font and its size.
Font font = new System.Drawing.Font("Arial", 30, FontStyle.Bold, GraphicsUnit.Pixel);

//Determine the size of the Watermark text.
SizeF textSize = new SizeF();
textSize = grp.MeasureString(watermarkText, font);

//Position the text and draw it on the image.
Point position = new Point((bmp.Width / 2), (bmp.Height / 2));

//Rotate and Draw
grp.TranslateTransform(position.X / 2, position.Y / 2);
grp.RotateTransform(-45);
grp.DrawString(watermarkText, font, brush, position.X - ((int)textSize.Width + 10), position.Y - ((int)textSize.Height + 10));
grp.ResetTransform();

using (MemoryStream memoryStream = new MemoryStream())
{
//Save the Watermarked image to the MemoryStream.
bmp.Save(memoryStream, ImageFormat.Png);
memoryStream.Position = 0;

//Start file download.
Response.Clear();
Response.ContentType = "image/jpg";
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);

//Write the MemoryStream to the Response.
memoryStream.WriteTo(Response.OutputStream);
Response.Flush();
Response.Close();
Response.End();
}
}
}
}
0