Web Forms :: How To Retrieve Data From Database To Display Several Listed Items Simultaneously
Jun 24, 2010
I would like to display the following information for each "Camera" (in the format below) on my web page in an HTML table. All the data is contained in one table in my database:
For Camera = Canon (e.g.):
Type (Text via asp:Label)
Lens Size (Text via asp:Label)
Storage (Text via asp:Label)
Max. video resolution (Text via asp:Label)
Max. photo resolution (Text via asp:Label)
Weight (Text via asp:Label)
Dimensions (Text via asp:Label)
Sensor (Text via asp:Label)
...where (Text) is the value retrieved from the database for the given Camera. advise on the best way to retrieve this data? The only method I can think of (from my limited experience!) is to have a separate VB function for each value, to run separate SELECT queries for each field, and then to set the (Text via asp:Label)
value accordingly. I am already doing this for datagrid retrieves etc. For example:[Code]....
BUT... I know there must be a better method for the above requirement!
I am trying since more than 5 days to retrieve and display an image in a web page, no success so far.1. I have a table named image, with three fields ImageID, Img_data, Img_contenttype .2. I am able to display the ImageID as a link in my page.3. On clicking the link i am going to my viewImage.aspx?img=ImageID .This far it works ok. ImageID is passing in the query string.4. In this page imageID is being captured from query string and stored in ImageIdview int variable. viewImage.aspx has an image tag to display the image as below.
I have a page where I will insert all the data into the database. The page where I'm having problems is when I select an item from the checkboxlist it only displays one item. The data which is displayed is only the one that was inserted with one selected item from the checkboxlist. The following code is the page I'm using to try to retrieve the data from the database. I am trying to do is when a user selects the first, second, or third, or fourth item. The corresponding data appears in the gridview. In my current code, the record which has one item selected appears. If the user has more than one selected it does not appear. It comes up as empty. Is there a way I can do it?
I have data in mydatabase. My AnswerText in the database is test1,test2,test3 While retrieving it is displaying as test3,test1,test2. I am using the below code to display the data.
Dictionary<string, string> dicKeyValues = new Dictionary<string, string>(); for (int i = 0; i < cnstsData.Answer.Count; i++) { dicKeyValues.Add(AnswerText, AnswerImage); } DataList.DataSource = dicKeyValues; DataList.DataBind();
I want to display the AnswetText as test1,test2,test3. Basically i want the same order which i added to the database while retrieving also.
I have a application which connects to database. I have like 97 thousands data on the database. When I search something from front end and display those matching results on the browser, it crashes everytime (for huge number of data).
I'm using Dataset to retrieve data from database and display those matching results on Gridview(or repeater).
e.g. If I search 'abuse' it matches 65 thousands records and I can't retrieve and display those on browser, the browser crashes everytime.
I can search and display whole records without crashing the browser?
I am creating a kind of feedback website which has a feedback form on it. Each question is answered choosing from a radio button group. the answers to each question are (very good, good, bad, failed). I need to be able to create a table on the webform that will display the number of answers to each questions. for example, if the question is "Rate the use of this software" i need to be able to put in table format say 20 people said "very good", 30 said "good" etc. at the moment i only have one table to display the questions and answers and a date that will be used to select the date's report. so all the information i need is coming from this table. all i need to do is how to say like "SELECT Count* Question where Review date = "user entered date" and answer = "very good" etc.
In the following code, I need to modify the Handler so that the records or results that display are based on a QueryString value. Currently all of the records in the table display on the page but I want records to display based on the passing a querystring value based on the field, id. I have tried to alter the code without much success.
Public Class FileVB : Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest Dim id As Integer = Integer.Parse(context.Request.QueryString("id")) Dim bytes As Byte() Dim contentType As String Dim strConnString As String = ConfigurationManager.ConnectionStrings("fitnesConnectionString").ConnectionString Dim name As String Using con As New SqlConnection(strConnString) Using cmd As New SqlCommand()
In gridview I have two link button that is "VIEW" and "DOWNLOAD" if I click "view" that pdf file will display in an other page if I click download that file will be downloaded.. how can i do this..
How can i display in web browser directly from the database varbinary Office Files (Word, Excel, PowerPoint, and many others like Images), like this example in PDF [URL] ....
in database I have House_info table that has description column and if I enter text in textbox1 it update description column now problem is when I enter text in textbox1 it didn't change text and didn't update data in database...
I put breakpoint in imagebutton2_click event and see in this code
I have a page where a user can insert some order about some product. In that page there are also live statistics which is being refreshed every 20 seconds to reflect the current price of a product using asp.net timer. This live panel fetching these prices from a database.
When sometimes an order is being inserted, I get an exception saying that the connection is closed and the insert command cannot continue. I suspect that when the insert command is given, if at that exact moment the live update is being refreshed, then they both need to access the database, and they are using the same SqlConnection Object. So when one finishes, the connection object being closed even if the other one is using the same connection object.
Before closing a connection, how can I be sure that no other methods are using that connection?
The code of my connection class is given below, for better clarification -
I have Two fileds the names are QtyRec and QtyReq in my table when These two are identical(10=10) then corresponding recrod should not listed in Gridview. Can any one provide solution
Gridview Code is Public Sub retriveDataToDataGrid() Try Dim connectionString As String = "Database=pjt;" & "Data Source=localhost;" & "User Id=root;Password=prasad123" Dim query As String = "Select WONumber,paertno,mfgpart,manufacturer,QtyRec,QtyReq,QtyShort,Duedate,Notes from ilist order by WOnumber" Dim connection As New MySqlConnection(connectionString) Dim da As New MySqlDataAdapter(query, connection) Dim ds As New DataSet() If da.Fill(ds) Then GVIL.DataSource = ds.Tables(0) GVIL.DataBind() End If connection.Close() Catch ex As Exception Console.WriteLine(ex.Message) End Try End Sub
I am having a problem displaying an image in the fileupload tool.
This is it. I have an image upload tool and also have a VARBINARY field in the database to save the image. during the save process I add the uploaded image into the database VARBINARY field. This is how i add it.
DR["IMAGE"] = FileUpload1.FileBytes;
It saved successfully without no errors. Now after saving i need to display that image in a ImageBox control which is available in my web form. How to display an image which is saved as VARBINARY in the database into an image box?
I have a barcode slider which scan student ID CARD. When students scan their Student ID, the barcode reader generate the following:
BARCODE_NUM,LASTNAME, FIRSTNAME. Below is a dummy example when students scan their Student_ID into barcode reader. I get the following data from the barcode reader.
" %C9887688767876^Smith/John^5656656556565?;C9887688767876=3434354450000? " When the user scan their Student ID into TextBox1, i want to only display BARCODE_NUM which is C9887688767876 from the example. Also When the user scan their Student ID into TextBox2 , i want to only display LASTNAME which is Smith from the example. When the user scan their Student ID into TextBox3, i want to only display FIRSTNAME which is John from the example.
I have a method that retreives data from table and needs to display in details view. The method is give below: The problem I am facing is I did put some break points to figure out if all the lines are executed but the problem I am facing is that the compiler is not going in the while(reader.read()) loop(I have made to loop bold so that would be easy to locate) and hence unable to retreive data.
public static Workstation GetWorkstationByName(string workstationName) { Workstation computer = new Workstation(); string key = "workstation_workstation_" + workstationName; if (workstationName == null) return null; if (SiteUtility.Cache[key] == null) { string con = SiteProvider.Instance.AltirisConnectionString; List<Workstation> workstationlist = new List<Workstation>(); SqlConnection cn = new SqlConnection(con); SqlCommand cmd = new SqlCommand("Select [Server] from vComputer where Name = '@workstationName';", cn); cn.Open(); cmd.Parameters.Add("@workstationName", SqlDbType.VarChar).Value = workstationName; SqlDataReader reader = cmd.ExecuteReader(); while (reader.Read()) { Workstation ws = new Workstation(); ws.Server = reader["Server"] as string; workstationlist.Add(ws); } string ADSPath = "LDAP://" + SiteProvider.Instance.DomainString;..............
it contains the following field "id","name","amount"
when the user enter the "id" in TextBox1 and click the button then the "name" and "amount" to that corresponding id should be dispalyed in the TextBox2 and TextBox3.
Iam trying to understand why my sqldatasource control bound to gridview will not return data while i have cascading dropdownlist coded in pageload and selected events respectively?
from which sqldatasource control stored procedure obtains its parameter values.
only when i select items from second dependent dropdown does the grid display data?
I'm amazed that it took me minutes to figure out how to retrieve text from a specific SQL database record and display it on my aspx page using FormView---and yet days later I still can't figure out how to retrieve/display the corresponding database image...(I feel like I went to a fast food restaurant, received my burger and drink in minutes---but for the fries I'm told to leave the restaurant, drive to another county, and search for the granite boulder under which I am to find the next clue in the quest to get my fries.
I don't want to waste anybody's time---I do see that this issue has come up here before (but each solution seems more complicated than the previous one): clearest way (or your favorite past thread on this topic) to retrieve/display/edit binary image data using FormView?
I hv created menu using sitemap xmldatasource now i want to display that based on Category or Roles. I have Created 4 Category in my sql Server 2005. when particular user logged in based on his Category menu nodes should display.
I would like to display students and their grades with a GridView and LinqToSQL like this:
[Code]....
I found this topic but it doesn't answer my question: http://forums.asp.net/t/1557987.aspx
I have a many-to-many relationship between students and assignments called "grades".The grade for the assignment is stored in that table in a "gradeNumber" column.The many-to-many relationship seems to be a problem.I tried adding a TemplateField to my grid:
[Code]....
It doesn't work: ...student does not contain a property with the name grade.
It does work when I use class.name however to get a student's class he is in.In code students .grade[0].something works however My LINQ entities are extended with custom code to allow me to retrieve studentx.Assignments or assignmentx.Students.(I would also like to specify which assignments should be displayed in the grid.)
