Data Controls :: Save Dynamically Generated Barcode Image Into Database
May 7, 2015
I am generating barcode image dynamically on button click .
The image is display on the asp image control, now I want to save that image in database
string barCode = txt_ID.Text;
using (Bitmap bitMap = new Bitmap(barCode.Length * 40, 80)) {
using (Graphics graphics = Graphics.FromImage(bitMap)) {
Font oFont = new Font("IDAutomationHC39M", 16);
PointF point = new PointF(2f, 2f);
So while working on my project on local system, i need to generate a barcode and save it to a folder then retrieve it to attach it in an email to send to user, i got the barcode generator code somewhere on these forums (thanks for sharing) and used it and it worked perfectly, generated the code as image, saved the file to a folder on the local system, retrieved and attached it to email and sent it with no probs.
Next, i uploaded the files to online server to go live, i test, no barcode is getting saved :S, i'm guessing it shouldn't be that easy, guess i have to do some stuff before i can save it to a folder on the server,
Here is the barcode generator code:
[code]....
At the same time, can you also include how to retrieve it for later use ?
currently i use this to retrieve it from the folder on local system:
I used the barcode example to my application and it generated barcode perfectly now I want to know that can this barcode image is readable by a barcode reader device ?
If Yes then how and if no then why and how to do ?
i have followed this article and created dynamic rows in gridview on button click: URL....Now i want to save the dynamically created rows data in database/
I have another problem is that I have Placed a file upload control in Empty template of Gridview to have multiple record insert. I have used viewstate to save multiple record into database. But problem is that I am able to find the control but it not giving any value.I have following code.
i created area "Decoration" for dynamically generating images.
public ActionResult Round(CornerPosition x, CornerPosition y, int radius, string color, int width) { Color c = ColorTranslator.FromHtml(color); Pen pen = new Pen(c, width); MemoryStream s = new MemoryStream(); using (Bitmap bmp = new Bitmap(radius, radius)) using (Graphics g = Graphics.FromImage(bmp)) { g.SmoothingMode = SmoothingMode.HighQuality; g.Clear(Color.Transparent);
when i reference image on the page <img src="/Decoration/Corner/Round/Right/Top/8/Black/1" /> it displayed properly if started in VS 2010 debugger.
but as soon as publish web site image not displayed!
I have try the code that you provide in article "Dynamically Generate and Display Barcode Image in ASP.Net"It is running, however, the barcode image is not there. Eg: I put "a" in the textbox, after push the generate button, its only show "*a*" without the barcode.
The error shows that it is invalid parameter in line "Using bitMap As New Bitmap(barCode.Length * 40, 80)"Â
I have install the application that been given too.
And in another page i am displaying the list of all the dynamic database tables. Here user selects table from gridview and the data is displayed to him in dynamically generated HTML Table with Dynamic textboxes. (This part is also running ok)
Code:
// Display data protected void getTableInfo() { int RowNo = 0; string NotCmd = "Select * From NTL Where InfoCode = @InfoCode";
[Code] ....
Now the problem is how to update the record in database through this dynamically generated html table and texboxes. When I run my dynamically generated update command, all the dynamic controls is lost in postback.
I have a grid and on each row of grid i generate a radiobuttonlist with 2 items dynamically in rowdatabound. On the save button event i want to access the data of the row and save the data in DB with which ever radio button is selected.I tried different things but all in vain. I tried to use hidden field so that whenever any radio button is selected in a row then in javascript i will update the hidden field but user can select multiple rows so this is not a good solution.
Here is my code of dynamic radio button list generation in rowdatabound event.
I create a gridview dynamically to fit the contents of a datatable...This form will have other dataatbles thrown at it but for the moment I am only working on one to work out the details of the process.I will post all my code below...the problem is this. The code successfully geenrates the gridview the way I want however...whenever I select a row all the cells including the header cells dissapears [code]...
I'm trying to check dynamically generated "checkbox" value inside Listview.
I can reference non-dynamic checkboxes exact in same location (index) inside Listview using "e.Item.FindControl", however I can't reference dynamic checkboxes.
I have a gridview each line has 4 linkbuttons - Edit , Update , Cancel , Delete and a few columns with data...For example TeamName and TeamEmail, and a hidden column that contains a validator (for ease of validating controls that are found on the same row , same naming container)
When Edit button is Clicked , the specific line goes into editing mode , Texboxes are created for TeamName and for TeamEmail .
I create dinamically (code behind ) a new textbox that reads the value from the TeamEmail textbox , i give it a new id (let's say "Email") , add that email to the controltovalidate property of my validator , and call the validate() method of the validator.
Everything works fine when i modify the value in a worng format , the validator err message appears , when i modify the TeamEmail value to a good email format , the validator property isvalid becomes true , and the update is running , but my textbox is empty :( updating the TeamEmail value to null.
This is some bad code but hope you understand what i meant :
i hav a dyanmically generated gridview with autogenerated columns = true.. i want to change the width of a column of a grid... i tried to do it in row databound event as...
e.Row.Cells[1].Width = Unit.Pixel(300);
but it doesnt work... and since d columns are genrated dynamically i cant set d width as grd.columns[0].width =...
i have a requirement where user can edit the image in the flash tool runtime and i am saving the image to the server ...but now i have to give the option to save the same image to the localhost.one more thing is i am passing the parameters frm the flash tool to another page and doing all the operations on that page like save and download.
here click on the add your logo link then in the logo tab you can upload any logo from localhost then on the save tab i have to save the image to the server and then download it but both should be done at the same time i have done the save code but unable to downlaod it.
I am stuck in chart controls...Here is my prob... There is a ListBox containing some items...when user selects multiple items from the list box I want to generate a dynamic table with the number of columns same as that of the number items selected in the listbox. And for each selected item I want to show a seperate chart in the columns...Currently I want the same chart control for every selected item (i.e. a static hard coded chart that i will replace later by dynamic values)....I am using a method that draws a chart control using a sample dataset... I am calling it each time when a new column is created..Also the DrawChart method executes for the first column only and throws an index out of range exception! after the first execution...my code is not working...here
