Web Forms :: Read Value From Barcode Reader Using C#
Jun 12, 2012I have a barcode scanner . I want to read the barcode to a textbox in my asp.net application.
.So how can i get the barcode number into textbox.
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May 25, 2013I 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 ?
Web Forms :: Integrate Barcode Reader?
Jan 6, 2013I am searching for bar code integration code for Asp.net webform. Looking for complete sample source with suggestion of bar code scanner company and model name to integrate.
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Feb 22, 2011I have some code in my vb.net code behind that queries a database, and if there is data, outputs it from the codebehind to a datalist on my asp.net page. In addition to sending the data to the datalist on the page, I need to take the value from "mbillaty" that is returned from the sql query, and have that value be the selected value for a drop down box also on the page. I can get either the datalist to fill, or the selected value for the dropdown box to be selected depending upon which bit of code I place before the other (ARGH), but I can't get them to both work together on the page. What am I doing wrong?
[Code]....
Implementing The "barcode Reader" mechanism Into Website?
Dec 5, 2010Im creating my own website where my members will be able to buy and sell products online. Basically it would be selling and buying of cd's,dvd's,movies,games,bluray etc. I want the members to be able to enter the barcode of the product they wish to sell into a textbox, once they submit this, they should be presented with details of the particular product which matches the barcode. The details would usually be name and some description of the product. I have used this kind of software on an iphone and also come across it on this website http://www.musicmagpie.co.uk. Once the product shows up the member can can choose to go ahead in selling the product.
I wanted to know what is the process of implementing the "barcode reader" mechanism into my website.
Adding Images In Loop (while Reader.read) Fails
Mar 27, 2011I have following code that I can only add one image per row although I can add Listbox items as I wanted.
If "imgtag" 1~5 is checked, I get these in the listbox.
ie. ImageID = "cat"
listbox1. item gets - cat1, cat2, cat3, cat4, cat5
however I can only create the last image instead of 5 images.
- imageID - cat5
I assign each image unique ID.
If reader2.HasRows Then
While reader2.Read
Dim img1 = Convert.ToString(reader2("imgtag1"))
Dim img2 = Convert.ToString(reader2("imgtag2"))
Dim img3 = Convert.ToString(reader2("imgtag3"))
Dim img4 = Convert.ToString(reader2("imgtag4"))
Dim img5 = Convert.ToString(reader2("imgtag5"))
Dim blogimg = Convert.ToString(reader2("ImageID"))
Dim a As New HyperLink
a.Attributes.Add("onclick", "return hs.expand(this)")
a.Attributes.Add("href", "../../blog/images/" + blogimg)
Dim img As Image = New Image
img.ImageUrl = "~/blog/images/" + blogimg
img.Width = 200
If img1 = "1" Then
Dim blogimg1 As HtmlTableCell = CType(FindControl("blogimg1"), HtmlTableCell)
img.ID = blogimg + "1"
a.Controls.Add(img)
blogimg1.Controls.Add(a)
ListBox1.Items.Add(blogimg + "1")
End If
If img2 = "1" Then
Dim blogimg2 As HtmlTableCell = CType(FindControl("blogimg2"), HtmlTableCell)
img.ID = blogimg + "2"
a.Controls.Add(img)
blogimg2.Controls.Add(a)
ListBox1.Items.Add(blogimg + "2")
End If
If img3 = "1" Then
Dim blogimg3 As HtmlTableCell = CType(FindControl("blogimg3"), HtmlTableCell)
img.ID = blogimg + "3"
a.Controls.Add(img)
blogimg3.Controls.Add(a)
ListBox1.Items.Add(blogimg + "3")
End If
If img4 = "1" Then
Dim blogimg4 As HtmlTableCell = CType(FindControl("blogimg4"), HtmlTableCell)
img.ID = blogimg + "4"
a.Controls.Add(img)
blogimg4.Controls.Add(a)
ListBox1.Items.Add(blogimg + "4")
End If
If img5 = "1" Then
Dim blogimg5 As HtmlTableCell = CType(FindControl("blogimg5"), HtmlTableCell)
img.ID = blogimg + "5"
a.Controls.Add(img)
blogimg5.Controls.Add(a)
ListBox1.Items.Add(blogimg + "5")
End If
End While
DataSource Controls :: Can Update A Record In A Table That Has Been Read By Reader
Apr 10, 2010I have been able to successfully read a row of data from an SQL table using two column parameters. Now I would like to update this row with new information. Is this possible since the reader does not specify which row was read with the 'reader.Read();' command?
View 7 RepliesSQL Server :: Invalid Attempt To Call Read When Reader Is Closed?
Jan 28, 2011I have a function which allows me to quickly load SQL results into an SQLDataReader.
This is a very effective way for me to do this as it can be used for inserts, updates and selects very easily throughout my code.
However, I have noticed some potential memory issues with my site while using this (I keep having to do iisresets when working locally because all the pools are used up) so I am trying to use "Using" rather than "Dim" in an effort to ensure that the connection is always disposed.
I call the function in the following way:
Dim RS As SqlDataReader = SQL.Exec("sp_MyStoredProcedure " & ID)
If RS.Read Then
Return RS("Column_Name")
End If
RS.Close()
[Code].....
I now get the error "Invalid attempt to call Read when reader is closed" when calling the function on the line "If RS.Read Then".
MySql.Data.MySqlClient.MySqlException: Invalid Attempt To Read When Reader Is Closed
Jan 15, 2010so i have a content page that load some content into repeater one of the repeater items is UserControl, when the page is load for the first time everything is perfect, but if i try to do postback and reload the repeater i get this error:
Code:
Exception Details: MySql.Data.MySqlClient.MySqlException: Invalid attempt to Read when reader is closed.
this error is raised in the repeater databind event.
DataSource Controls :: Invalid Attempt To Call Read When Reader Is Closed ObjectDataSource?
Feb 16, 2010Environment is : vwd2008, asp.net 3.5, linq to sql object model, formview, stored procedure used for query.On going problem... I have a simplified page with a webform content area from a master page. The content area contains a FormView connected to an object data source thru the design view tag. The O/R designer has the Lease Table and the stored procedure in the method area.
The stored procedure selects all records from a single table. I an using the DatabaseDataContext and selecting stored procedure name which has "return SingleResult".. There is no code written; the design view was used to create everything. The stored procedure executes in VWD 2008 express tab and shows desired records. I would like to use the O/R and Linq to SQL, and objectdatasource BUT.
How To Print Barcode Label On Client Barcode Printer
Feb 4, 2010How to print barcode label on client barcode printer from asp.net or create a application in vb.net and link to ASP.NET to print the label.
View 4 RepliesADO.NET :: Linq2Sql Error: "Invalid Attempt To Call Read When Reader Is Closed"
Aug 24, 2010I've read up on this error from other posts and on other sites, but haven't found a solid resolution to the issue yet. My setup is as follows:
I have a RepositoryBase class that fields certain db calls that all repositories need to perform. In one such call, "GetSecurityGroup", it works most of the time, but will seemingly at random throw an exception with the error "Invalid attempt to call Read when reader is closed." All other Repository classes inherit from this one, and they all use the same DataContext object, which I understand isn't thread safe. Since there could be multiple calls to the DataContext object on the same page, perhaps one is using the DataContext when the next tries to do so. I'm not sure. What can I do to ensure this doesn't happen?
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how to create or design 2D barcode using asp.net?
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Aug 17, 2010I am creating a web site that provide coupon for it's registered member. I want to set up barcoad for each coupon that the member printed. How can i create barcode and Print them in a html page that is used as my coupon page.
View 3 RepliesWeb Forms :: Generated Barcode Not Displaying
Jun 24, 2012I 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.
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Mar 20, 2013while i am rotating barcode image horizantal to verticle scanner is not reading barcode image.
string barCode = dt.Rows[i]["MemberShipid"].ToString();
System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();
using (Bitmap bitMap = new Bitmap(barCode.Length * 40, 80))
{
using (Graphics graphics = Graphics.FromImage(bitMap))
{
Font oFont = new Font("IDAutomationHC39M", 20);
[code]...
Web Forms :: How To Get Number Above Barcode Font
Nov 12, 2012How can I get number above barcode font I am using this snippet Â
protected void btnGenerate_Click(object sender, EventArgs e) {
string barCode = txtCode.Text;
System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();
using (Bitmap bitMap = new Bitmap(barCode.Length * 40, 80)) {
using (Graphics graphics = Graphics.FromImage(bitMap))
[Code].....
Web Forms :: How To Build Barcode Reading Into An Application
Sep 30, 2010Can anyone point me to a resource for how to build barcode reading into an ASP.net app? I need to scan a card and have it enter in the database that a person was present at a program that day.
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May 7, 2015I have created an image of barcode but it doesn' print properly in a zebra printer which has 203 dpi resolution. It comes in two pages. Barcode works but it prints two sticker one with barcode and one empty sticker.
View 1 RepliesWeb Forms :: How To Reduce Size Of Barcode Font In C#
Sep 30, 2012i want to reduse the size of barcode image in this code . i tried to reduce but its cutting the number ...  how can i reduce the size of this barcode image
string barCode = TextBox2.Text;
System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();
using (Bitmap bitMap = new Bitmap(barCode.Length * 40, 80))
[Code]....
Web Forms :: Print Generated BarCode Image?
Jan 23, 2014How to print barcode
provide me sample code for me ASAP.
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View 1 RepliesWeb Forms :: Generate 128 Bit Barcode And Display It In ListView
Mar 16, 2013i need to generate bar code "Code128" and boud into label.
i am using listview in list view 1 td i am generating barcode based on memberid which i am getting from data base.
<asp:Label ID="lblmemid" runat="server" Text='<%# Eval("MemberShipid") %>' Font-Bold="True" Font-Size="Larger" Height="20px" /></div>