Forms Data Controls :: Selecting Random Record From Database
Apr 21, 2010
I'm trying to select a random record from my database and display the details of the record on screen. The table I am using is the aspnet_Users table which as I'm sure you all know holds the details of users. After a bit of googling, I found the following code:-
[Code]....
I've built my page and I get no errors which is a great start I just can't seem to figure out how to then display the results of this query on the page. I just want to display the username for the record that is selected.
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Similar Messages:
Aug 13, 2010
i have design a web application having suppliers table using SqlDatasource..
i have a master page in my design and other form are bound to a context menu..
Now i have displayed the records in the gridview..all i wanted is after i select a record in the gridview it will display the selected record in detailview from another aspx form..
i was able to create the link to another aspx form but the data that it display is the first data from the gridview not the data that i select.
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Aug 24, 2010
As I understand the "gridview" control has a select link that can be enabled, I am fairly new to web development but what I was hoping to do was to click on the select link and then have the record that I have selected display on a seperate webpage. Is this relatively easy to do? Can anyone point me in the right direction?
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Jan 22, 2010
I want to pull a random record from the db.
Here what I have so far.
Dim RandomNumber As New Random()
Dim num As Integer
num = RandomNumber.Next(1, 75).ToString
Try
Dim Cnn As New OleDb.OleDbConnection("File Name=E:WebRHIUDLShelf_Life.UDL;")
Dim da As New OleDb.OleDbDataAdapter("SELECT tbMaster_List.dbMFG, tbMaster_List.dbDescription, tbInStock.ID, tbInStock.dbMFG_Lot_Code, tbInStock.dbDateReceived, tbInStock.dbDateOpened, tbInStock.dbExpireDate, tbInStock.dbLocation FROM (tbInStock
INNER JOIN tbMaster_List ON tbInStock.LnkToMaster = tbMaster_List.ID) ", Cnn)
Cnn.Open()
Dim dtt As New DataTable()
da.Fill(dtt)
This is were I am stuck.
I need to filter all rows out except where row(index) = num
Me.GridView4.DataSource = dtt
Me.GridView4.DataBind()
Catch
Label1.Text = "Error: Unable to Pull Data"
End Try
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Aug 2, 2010
I want to select a row in gridview and add the data of the row into a DataBase Table.
I have 2 tables
Table A and Table B.
I am displaying Table A data using gridview.When the user clicks the select command button in the gridview then i need to add that row data into Table B.
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Feb 5, 2011
I want to be able to retrieve a record from the database and change it than update the record in the database with changes.
what's I am doing
1- select the record for the data base
2- on loading the form set the content of each component woth data (eg: textbox1.text = "content")
when I edit the value and submit the form
3- I get the changed text (changed = textbox1.text )
but it get the old text not the changed one
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Oct 9, 2010
I put in break points, the problem starts when I get to this part:
[Code]....
I checked I can get all of my values. Here how I save my value in the bll:
[Code]....
[Code]....
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Mar 24, 2011
I want to add a new record to a database in my web application.
I use GridView to store the data from Access database.
I use VS2010 with VB
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Jan 31, 2011
i have in my asp.net web-page `label` that contain result of count record query.
i need to see refresh this query and see the correct record count.
how to see it ? i need any timer ? how to do it without Flickers ?
can i get any sample C# asp.net code ?
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Mar 3, 2011
I want to insert a new record into the database through gridview.New butoon in not inside the gridview it a diifrebt button.when we click new then it show a new row which is blank. another button is save when we click save it will save the data into database
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Jul 17, 2010
i need to show for every refresh of page five categories, every time different how can i do? in SQL do not exist select RND(field)...
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Apr 23, 2010
how to pull a RANDOM item from the database when using LINQ. There seems to be a couple of differnet ways to handle this. What I need to do though is pull a RANDOM item from the database that the user has not seen before.
The data I am pulling from the database is very small. Is there any way I can just hit the database once for 1000 records and then randomly scroll through those?
Should I put a cookie on the users system recording the IDs of which items they have seen, pull a random record, check to see if it is seen and if so, pull from the database again? That seems like performance issues just waiting to happen.
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May 14, 2010
I'm trying to figure out some alternate ways of dealing with a smaller subsets of records from a larger set of records. This would be to increase performance and make it easier for the user to navigate, as opposed to trying to navigate a really large unwieldy record set. I know of a few ways a user can select a record from a record set. Selecting from a Grid View, drop down list, list box are some the first ones that come to mind. Another way I've seen, I think it was done with a repeater or User Control, is to list all of the letters in the alphabet as links and then only return the records that correspond to the letter that was selected.
It could also be done to allow the user to search by last name, first letter of the last name or some other similar method. I'm curious if there are any other ways of doing this. Does anyone know any other techniques that would create a better user experience when selecting a record or subset of records from a large record set?
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May 11, 2010
I've been googling for 2 days for the solution, but I couldn't find something useful. The problem is that I have GridView that is connected to the SQL database and that is how it is being populated. I added EDIT and DELETE buttons in the columns, but as far as I can see the event which handles them is empty.
[Code]....
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Sep 8, 2010
I am trying to update record via stored procedure, but i got error at very start point. Problem is when i click on Edit link button within the Gridview it produce error.
I can populate values from database fine but its produce error when i click on edit link button. see the code below.
[Code]....
[Code]....
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Jun 24, 2010
I am counting from a table for that i have written code as below
protected void get_Id_Afterpoint()
{
int counter = 0;
string strSql = "select count(*) as ID from tblEnergy where ID=?";
OdbcCommand com = new OdbcCommand(strSql, con);
com.Parameters.AddWithValue("ID", DropDownList1.SelectedValue);
OdbcDataAdapter oda = new OdbcDataAdapter(com);
DataTable dt = new DataTable();
oda.Fill(dt);
if (dt.Rows.Count == 0)
{
lblID2.Text = "1";
}
else
{
counter = dt.Rows.Count;
counter = counter + 1;
lblID2.Text = Convert.ToString(counter);
}
}
there is no record related to DropDownList1.SelectedValue. but as i am counting if(dt.rows.count) and i put break point on the bolded part it shows 1 record. how it can be possible?
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Feb 18, 2010
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.
[Code]....
in above code
[Code]....
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May 21, 2010
asp.net 2.0 SQL 2005
I know how to do a simple grid view to show info, but with NO fancy stuff.
1) How can I click a row(not a field) and get the data for a specific field in a row ?
2) how can I put an image <img into a field of the grid view
3) How can I put a linkbutton in a field and have it run codebehind on a specific value in a field from that row.
4) I assume I can pass values to the row with visible = false, and use them in the above requests
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Feb 25, 2011
Using SQL and C#. I have a gridview with a template field. I need to modify the some items in the gridview when the user selects a given record and store the values back in the database. ProjectID is the unique key in the database.Gridview is done as a table. How can I do it? Here is my grid view implementation.
[Code]....
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Nov 16, 2010
I am using paging to my gridview (pagesize=4) . now i am in (X) page and i want to get (X+1) page top record or (X-1)page bottom record , how i can get .
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Mar 21, 2011
I have a delete button bellow my gridview and I want a pop up to show when no record is selected and tell the user to first select a record. The button click event would show the pop up, but my gridview data blanks out.
Here is my code:
[Code]....
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Oct 6, 2010
I want users to select a record in the GridView and then have that record open up in the Detailsview. How would I go about getting these two tools to communicate?
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Jul 6, 2010
i have one parent grid on which if user clicks a record ,the child details should get displayed on same page.
for example :
There is one department details table and employees table:
if user selects a record in department details grid,then employees in the selected department should get displayed in the next grid in the same page
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Oct 4, 2010
I want to limit the selecting of data records to only the user who created the record, OR a users who's email address belongs to the domain of the record being edited. So, if the producer has a value in the URL of "[URL]" and their email address in the Membership is [URL] they will be able to see the record.
I have the following table:
Table - Producer
Field: ProducerID
Field: ItemUserID
Field: URL
I have figured out how to select based on the ItemUserID (see code below), but I don't know how to compair the email address values of URL and the Membership.
protected void SqlDataSource1_Selecting(object sender, SqlDataSourceSelectingEventArgs e)
{
if (Page.User.Identity.IsAuthenticated)
{
//get id of user logged in
e.Command.Parameters["@ItemUserID"].Value = Membership.GetUser().ProviderUserKey;
}
}
how to code my requirements?
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Dec 15, 2010
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
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