DataSource Controls :: Read Sequential Rows From A Table?
Mar 23, 2010
I would like to be able to read the first row of a table and then each successive row sequentially individually. So, is there a way to read the first row of a table, whatever the primary key may be, and then read the next sequential row in the table until the last row has been read? I need to be able to do this in order to create a list of column entries in each row for a listbox control that a user can select from.
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Jan 10, 2010
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
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May 3, 2010
i have a method that do bunch of inserts in a table
these inserts done through a transaction (with default isolation level)
meanwhile i need to read some committed records from this table by using another method, i create another transaction for 2th method with a ReadCommitted isolation level but it just fails and return a timeout error and also, the DoTransaction cause the entire table inaccessible, how could i apply a row-level lock ?
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Mar 16, 2010
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May 1, 2010
I want to delete all rows from my table and then Sequence no of the primary key will start at 1.
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Jun 17, 2010
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My question is how do i use SqlDataReader to read the last row added to a table getting the contents of a column and storing it as a c# varaible
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Jan 29, 2010
I need to insert multiple records using a script.
My table is
Region
(
ID int,
Name varchar(50),
Description varchar(51)
)
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Is there any other option to insert record sequentially base on the highest number in the table.
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Apr 10, 2010
I 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?
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Sep 22, 2010
I'm trying to figure out how to update multiple rows in my Directory table, when a user changes their Street Number or Street Name in their profile. They can add multiple users to a directory and each user they add to the directory has this primary users UserId in it. So if the primary user changes their address, I want it to update the address for all the users they listed in the directory as well. I'm adding this to the On_Click in the Code Behind, so when they click to update their profile, it fires this function as well. This code may be way off, but here's what I have right now:
[Code]....
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Mar 4, 2010
How do I remove duplicate rows from a data table based upon a two column values;I want to pass in a Data Table and a column names and get the data table back with data rows where that columns value are unique.
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Jul 10, 2010
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Apr 27, 2010
I have an ID column (int) in my table which also needs to be a unique key.
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Mar 9, 2010
I am using asp.net3.5,sqlserver2008. I have retrieving data from Accounts,BUDGETS like this.
select a.AccountLink,a.Master_Sub_Account,b.* from Accounts a inner join BUDGETS b
on a.AccountLink=b.GLLink where a.AccountLink=1
output of my query...
AccountLink Master_Sub_Account GLLink AccType Budget01 Budget02 Budget03
[Code]....
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May 1, 2010
I've have to delete multiple rows from database in a table . Which is the best way to delete data to optimize performance of sql server as well as asp.net.
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Feb 10, 2010
I am using vs2008, Sqlserver2008.
my table: PostGL having data like thi
AutoIdx TxDate Id AccountLink Description Debit Credit
3 2010-01-22 JL 2 bcb 0 35.09
5 2010-01-28 JL 2 g 3.51 0
select AutoIdx,TxDate,Id,AccountLink,Description,Debit,Credit,(Debit-Credit) as Actual from PostGL where Id='JL' and AccountLink=2
AutoIdx TxDate Id AccountLink Description Debit Credit Actual
3 2010-01-22 JL 2 bcb 0 35.09 -35.09
5 2010-01-28 JL 2 g 3.51 0 3.51
I am trying in view like this
declare @cnt int
declare @i int
set @budget=20
set @cnt= (select COUNT(*) from PostGL where AccountLink=2 )
set @i=1
WHILE (@i<=@cnt )
BEGIN
set @tdebit=??
END
I am taking count the no of rows having AccountLink=2
I need to read all debit,credit and add all debit into totaldebit,all credit into totalcredit independently from table.
then i need to show the totaldiff as Actual.
i need ....totaldiff=totaldebit-totalcredit
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May 31, 2010
I have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.
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Jun 17, 2010
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In above query I want to have top 10 rows as well as count of all rows.
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Mar 24, 2011
How do I loop the gridview to read or insert one row by one row?I have a database which has a Primary key. Currently,all the rows seems to appear at one time.Even when I use a counter,it did read one row from a textbox(which is for my testing to read one row) but in the database,it still inserts the whole rows from the gridview.I can't click button twice as it will occur an error "Primary Constraint".
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Apr 29, 2010
I have the following fields in an Appointment table:
ID(PK), TeacherID, DayID, TimeslotID, ParentID, StudentID, Remarks & Editable(bit, Default value=1)
I am developing an application to allow parents to book appointments to meet the child's teachers.
It is compulsory for parents to meet child's mentors, hence Appointments to meet class mentors are already pre-booked in the Appointments table.
Parents could still book appointments to meet other subject teachers. I have a column in my gridview to show parents the list of booked appointments. Parents are allowed to change the Appointment timeslot for an appointment they booked and are not allowed to change appointment time for pre-booked appointments.
Under the Remarks colum, it is stated that the following appointment is pre-booked by class mentor.
How do I make only those pre-booked rows read only since all the appointments belonging to a parent is under one GridView.
I found an example, but this is to only make the 1st 3 rows read-only and I don't think this is in VB coding. I'm usingASP.NET VB coding.
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Mar 24, 2010
VS 2008 ASP.NET 3.5 app connecting to an MS SQL 2005 backend. The app contains a strongly typed dataset with a number of TableAdapters. I'm trying to add a query to one of the TableAdapters that deletes from table A, then related entries from table B, then related entries in the master table - table C. The query looks like this:
[Code]....
When I try to run that query to test it out, an error dialog box pops up that says "Unable to parse query text" followed by a second error dialog box that says "Must declare scalar variable @ID". Will the TableAdapters not run sequential Delete statements like this or did I do something wrong?
**Side note: A cascading Delete foriegn key relationship would be ideal, and was configured on the development database, but the DBAs messed up when replicating the database on the production server and getting them to fix something like this can be a difficult process.
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<ItemTemplate>
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Aug 20, 2010
how can i read datas from table control
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May 14, 2010
If I have created a sub (VB) that creates a set of CheckBox controls at runtime, how would you suggest that I then read these controls into a 4 column table?
Protected Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)
For i As Int32 = 0 To 9
Dim chk As New CheckBox()
chk.ID = String.Format("chk{0}", i)
Form.Controls.Add(chk)
chk.Text = String.Format("column{0}", i)
Next i
End Sub
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Dec 8, 2010
how can we read all rows data in rowcommand event of gridview?
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