Here is an article from ftp online: Modify Image Data
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Here is an article from ftp online: Modify Image Data
PermalinkHere is an article from ftp online: Automate Text Graphics Creation
PermalinkHere is an article from ftp online: Chart a Course With ASP.NET Graphics
PermalinkTry giving the proper file path for the image. Also make sure you have proper permissions on that file.
PermalinkVB.NET
...
Dim sFormat As New StringFormat()
sFormat.Alignment = StringAlignment.Far
...
g.DrawString('Syncfusion', New Font('Arial', 16, FontStyle.Italic), SystemBrushes.WindowText, New PointF(2, 2), sFormat)
......
C#
...
StringFormat sFormat = new StringFormat() ;
sFormat.Alignment = StringAlignment.Far;
...
g.DrawString('Syncfusion', new Font('Arial', 16, FontStyle.Italic), SystemBrushes.WindowText, new PointF(2, 2), sFormat) ;
......
Permalink
...
dim sFormat As New StringFormat()
sFormat.FormatFlags = StringFormatFlags.DirectionVertical
...
g.DrawString('Syncfusion', new Font('Arial',16,FontStyle.Italic or FontStyle.Bold ),SystemBrushes.WindowText, new PointF(2,2) , sFormat )
...
StringFormat sFormat = new StringFormat() ;
sFormat.FormatFlags = StringFormatFlags.DirectionVertical ;
...
g.DrawString('Syncfusion', new Font('Arial',16,FontStyle.Italic|FontStyle.Bold ),SystemBrushes.WindowText, new PointF(2,2) ,sFormat) ;
...
PermalinkVB.NET
if (Img.RawFormat.Equals(System.Drawing.Imaging.ImageFormat.Jpeg)) then
Response.ContentType = 'image/jpeg'
Else
..
End if
C#
if (Img.RawFormat.Equals(System.Drawing.Imaging.ImageFormat.Jpeg))
{
Response.ContentType = 'image/jpeg'
}
else
{
..
}
PermalinkTry
VB.NET
Label1.BackColor = System.Drawing.Color.FromName('Green')
C#
Label1.BackColor = System.Drawing.Color.FromName('Green');
PermalinkTry
VB.NET
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias
C#
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
PermalinkVB.NET
Dim img As System.Drawing.Image
Dim strFilename As String = Server.MapPath('curves1.jpg')
img = System.Drawing.Image.FromFile(strFilename)
Dim b = New System.Drawing.Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb)
Dim g As Graphics = Graphics.FromImage(b)
img.RotateFlip(System.Drawing.RotateFlipType.Rotate270FlipXY)
g.DrawImage(img, New Point(0, 0))
Response.ContentType = 'image/jpeg'
b.Save(Response.OutputStream, ImageFormat.Jpeg)
C#
System.Drawing.Image img ;
string strFilename = Server.MapPath('curves1.jpg') ;
img = System.Drawing.Image.FromFile(strFilename) ;
Bitmap b = new System.Drawing.Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb) ;
Graphics g = Graphics.FromImage(b) ;
img.RotateFlip(System.Drawing.RotateFlipType.Rotate270FlipXY) ;
g.DrawImage(img,new Point(0,0)) ;
Response.ContentType='image/jpeg' ;
b.Save(Response.OutputStream, ImageFormat.Jpeg) ;
PermalinkVB.NET
Dim objBitmap As New Bitmap(500, 500)
Dim objGraphics As Graphics = Graphics.FromImage(objBitmap)
objGraphics.Clear(Color.White)
objGraphics.FillRectangle(New SolidBrush(Color.Purple), 0, 0, 400, 10)
objBitmap.Save(Response.OutputStream, ImageFormat.Jpeg)
C#
Bitmap objBitmap = new Bitmap(500, 500);
Graphics objGraphics = Graphics.FromImage(objBitmap);
objGraphics.Clear(Color.White);
objGraphics.FillRectangle(new SolidBrush(Color.Purple ), 0, 0, 400, 10);
objBitmap.Save(Response.OutputStream, ImageFormat.Jpeg);
PermalinkVB.NET
’Function
Public Function showImage(empid As Int32) As Byte()
Dim myconnection As New SqlConnection('Server=localhost;uid=sa;password=;database=northwind;')
Dim mycommand As New SqlCommand('Select Employeeid, FirstName,Photo from Employees where employeeid =' + empid.ToString(), myconnection)
myconnection.Open()
Dim dr As SqlDataReader = mycommand.ExecuteReader()
dr.Read()
Dim imgbyte As Byte() = CType(dr('Photo'), Byte())
Return imgbyte
End Function ’showImage
’In Page_Load
Dim data As Byte() = showImage(2)
Dim offset As Int32 = 78
Dim mstream As New System.IO.MemoryStream()
mstream.Write(data,offset,data.Length -offset)
Dim bmp As New System.Drawing.Bitmap(mstream)
bmp.Save(Server.MapPath('sample.jpeg'), System.Drawing.Imaging.ImageFormat.Jpeg)
mstream.Close()
Image1.ImageUrl = Server.MapPath('sample.jpeg')
C#
//Function
public byte [] showImage(Int32 empid)
{
SqlConnection myconnection = new SqlConnection ('Server=localhost;uid=sa;password=;database=northwind;');
SqlCommand mycommand = new SqlCommand ('Select Employeeid, FirstName,Photo from Employees where employeeid =' + empid, myconnection);
myconnection.Open ();
SqlDataReader dr= mycommand.ExecuteReader();
dr.Read();
byte[] imgbyte =(byte[]) dr['Photo'];
return imgbyte;
}
//In Page_Load
byte[] data = showImage (2);
Int32 offset =78;
System.IO.MemoryStream mstream = new System.IO.MemoryStream ();
mstream.Write(data, offset, data.Length - offset);
System.Drawing.Bitmap bmp= new System.Drawing.Bitmap(mstream);
bmp.Save(Server.MapPath ('sample.jpeg'), System.Drawing.Imaging.ImageFormat.Jpeg );
mstream.Close();
Image1.ImageUrl = Server.MapPath('sample.jpeg');
PermalinkVB.NET
dim fntFont as Font = new Font('Arial',16,FontStyle.Italic|FontStyle.Bold )
C#
Font fntFont =new Font('Arial',16,FontStyle.Italic|FontStyle.Bold ) ;
For more details refer FontStyle Enumeration
PermalinkGive the proper path of the file. Check your permissions on the server where you are trying to write/read the files
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