A generic error occurred in GDI+.

Question

User-1299682884 posted

Hi Experts

I am generating a barcode image from 6 digit numeric and my code is working fine through visual studio development web server but not working through local IIS web server.

I receive error message "A generic error occurred in GDI+." at below code.  

bmp.Save(xlocation, System.Drawing.Imaging.ImageFormat.Gif)

The below is complete code:

    Private Sub getbcode()

        Dim Input As String = UCase(Request.QueryString("awb").ToString())
        'Dim input As String = UCase(TextBox1.Text.Trim())
        If Input = "" Then Input = "DRDIGIT.COM"
        Dim ValidInput As String = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*"
        Dim ValidCodes As String = "4191459566472786097041902596264733841710595784729059950476626106644590602984801043246599624767444602600464775861090446866032248034439186013047842447705803036526582823575858090365863556658042365383495434978353624150635770"
        Dim i As Integer
        For i = 1 To Input.Length
            If InStr(1, ValidInput, Mid(Input, i, 1)) = 0 Then
                Response.Write("Invalid input")
                Response.End()
            End If
        Next
        Input = UCase(IIf(Left(Input, 1) = "*", "", "*") & Input & IIf(Right(Input, 1) = "*", "", "*"))
        Dim bmp As Bitmap = New Bitmap(Input.Length * 16, 50)
        Dim g As Graphics = Graphics.FromImage(bmp)
        g.FillRectangle(New SolidBrush(Color.White), 0, 0, Input.Length * 16, 50)
        Dim p As New Pen(Color.Black, 1)
        Dim BarValue, BarX As Integer
        Dim BarSlice As Short
        For i = 1 To Input.Length
            Try
                BarValue = Val(Mid(ValidCodes, ((InStr(1, ValidInput, Mid(Input, i, 1)) - 1) * 5) + 1, 5))
                BarValue = IIf(BarValue = 0, 36538, BarValue)
                For BarSlice = 15 To 0 Step -1
                    If BarValue >= 2 ^ BarSlice Then
                        g.DrawLine(p, BarX, 0, BarX, 50)
                        BarValue = BarValue - (2 ^ BarSlice)
                    End If
                    BarX += 1
                Next
            Catch
            End Try
        Next

        bmp.Save(xlocation, System.Drawing.Imaging.ImageFormat.Gif)
        imgcont.Src = "/Images/" & Request.QueryString("awb").ToString() & ".gif"
        lblno.Text = "&lt;p align='center'>" & Input & "</p>"

        g.Dispose()
        bmp.Dispose()

    End Sub

 Can someone please help me to resolve the above error message?

 Kind Regards

Bhavesh

 

Answer 1

User1564875471 posted

Hi,

I receive error message "A generic error occurred in GDI+." at below code.  

bmp.Save(xlocation, System.Drawing.Imaging.ImageFormat.Gif)

It happeend to me before ,you application doesn't have write permission on the xlocation directory.

Please make sure to add write permisison for network service account(or for aspnet account if your are running on XP) on that directory.

Answer 2

User-1299682884 posted

Thanks.

 

 

Answer 3

User-1660525459 posted

 

Hi, cud plz help me in solving my prob. I cannot crop my image & save to a folder. 

 

protected void btnCrop_Click(object sender, EventArgs e)
        {
            string ImageName = Session["img"].ToString();
            int w = 40;
            int h = 60;
            int x = 50;
            int y = 70;

            byte[] CropImage = Crop(ImageName, w, h, x, y);
            using (MemoryStream ms = new MemoryStream(CropImage, 0, CropImage.Length))
            {
                ms.Write(CropImage, 0, CropImage.Length);
                using (SD.Image CroppedImage = SD.Image.FromStream(ms, true))
                {
                    string SaveTo = ImageName + "CropImage" ;
                    CroppedImage.Save(SaveTo, CroppedImage.RawFormat);
                    pnlCrop.Visible = false;
                    pnlCropped.Visible = true;
                    imgCropped.ImageUrl = "Water lilies.jpg" + ImageName;
                }
            }
        }

        static byte[] Crop(string Img, int Width, int Height, int X, int Y)
        {
            try
            {
                using (SD.Image OriginalImage = SD.Image.FromFile(Img))
                {
                    using (SD.Bitmap bmp = new SD.Bitmap(Width, Height, OriginalImage.PixelFormat))
                    {
                        bmp.SetResolution(OriginalImage.HorizontalResolution, OriginalImage.VerticalResolution);
                        using (SD.Graphics Graphic = SD.Graphics.FromImage(bmp))
                        {
                            Graphic.SmoothingMode = SmoothingMode.AntiAlias;
                            Graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
                            Graphic.PixelOffsetMode = PixelOffsetMode.HighQuality;
                            Graphic.DrawImage(OriginalImage, new SD.Rectangle(0, 0, Width, Height), X, Y, Width, Height, SD.GraphicsUnit.Pixel);
                            MemoryStream ms = new MemoryStream();
                           
                            bmp.Save(ms, OriginalImage.RawFormat);
                            return ms.GetBuffer();
                        }
                    }
                }
            }
            catch (Exception Ex)
            {
                throw (Ex);
            }
        }

Answer 4

User-1660525459 posted

hay, i got the ans..its wrkin fine [:)]

Answer 5

User1810039979 posted

I have a similar problem... I realized that the issue I was having was that I have wrote privileges to the location where I was saving a file but other users do not (and cannot.)

Currently I have the page set up to draw the image in the codebehind, save it as a gif, then use the mapped path as the ImageUrl for an asp:Image control.  Can I use

imagename.Save(Response.OutputStream, ImageFormat.Gif)
-- instead of --
imagename.Save(Server.MapPath(savefile), ImageFormat.Gif)

and still control where the image appears within the page without setting up any frames or anything like that?  Thanks for your help.

Here's the saving/displaying portion of my current code:

 

Dim savefile As String = "compocompmap.gif"
mapImage.Save(Server.MapPath(savefile), ImageFormat.Gif)
Dim imagepath As String = savefile & "?dt=" & System.DateTime.Now
compoCompImage.ImageUrl = imagepath

 

Answer 6

User-1660525459 posted

u can do it in both way, o/p obtained will b same

 CroppedImage.Save(Response.OutputStream, ImageFormat.Jpeg);

Answer 7

User1810039979 posted

My problem is placing the image within the page.  With the save and server.mappath function i can just create the image and save it to a location then display it where i have the asp.net image control.  With response.outputstream, it seems like it has to be a separate page that is accessed as the image.  Is there a way to use response.outputstream within the same page with all the other content?  Thanks.

Answer 8

User1564875471 posted

With response.outputstream, it seems like it has to be a separate page that is accessed as the image.  Is there a way to use response.outputstream within the same page with all the other content?

I don't think you can ! you need a seprate page/handler to render the image ,see the "The Image Grabber" section in this link:

http://www.beansoftware.com/asp.net-tutorials/images-database.aspx