DataSource Controls :: Access Data Returned In Dataset?
Feb 26, 2010
I am having some difficulties with a particular task. I am creating a support desk intranet application and I am trying to write a method within a class within a namespace which will form a generic database connection which can be called from any of the aspx pages so that I have the dbconnection logic in one place; you know, going along with the 'DRY' (Don't Repeat Yourself) mantra.
The Namespace:
SUPPORTDESK.SQL.dbconnection.pullData()
Objective of the method:
To provide any aspx code behind file with an SQL Server 2005 Express Connection and if possible return the data from an SQL Query. This is where I need advice do I create the method such that it simply forms the connection and returns a DataSet or that it returns an SQLConnection object? If i've got things back to front and upside down don't worry I'm a beginner with ASP.NET. The Method so far:
[Code]....
If I'm on the right track how do I access the data returned in the DataSet?
View 3 Replies
Similar Messages:
Feb 17, 2011
I want to run a SUM on a particular against the DataSet returned by a SqlDataSource. How can I access the DataSet stored in memory that is returned by the SqlDataSource to run this calculation?
View 2 Replies
Feb 18, 2010
I've managed to connect to the database and return a record based upon a login name. I can itterate through the rows printing out the password but I know there's only 1 row (or can test for that) so how do I get the value of the password for the one row without the loop?
Dim supervisorAdapter As New SupervisorTableAdapters.SupervisorTableAdapter
Dim supervisors As Supervisor.SupervisorDataTable
supervisors = supervisorAdapter.GetSupervisorByLogin(login)
For Each count As Supervisor.SupervisorRow In supervisors
Response.Write(count.password)
Next
View 3 Replies
Apr 23, 2010
This may not be the correct place to put this as it is both a stored procedure AND Visual Studio 2008 problem.
I have the following stored procedure:
[Code]....
I have been mokeying around with it because of what is happening. I have a dataset, call it dataset1. I drag this stored procedure onto the dataset. I EXPECT a datatable to appear, instead the data set adds this store procedure to the queries table adapter and sets the exec mode to 'NonQuery' which unless I am very mistaken, means "don't expect a dataset back from this' when in fact you DO expect a dataset back from this.
The SQL server is a Windows 2000 Server running SQL 2000. It has never caused us a moments grief since we set it up oh-so-many years ago.
If I connect to a different database and drag a query into the same dataset I get a datatable as I expect. I cannot see where / how this procedure could be wrong. The query when executed returns exactly the data I expect, in the format I expect (looks like a table, acts like a table in the Query analyzer).
View 3 Replies
Mar 30, 2010
I have a stored procedure 'RoomIfExists' on my sql server (it does work). It takes a string variable for the Room_No and returns either '1' or '2' depending on the result of the query.
[Code]....
I need to know how to run the sp in c#, passing the variable Room_No and then pull the result from it.I am using a data reader.
View 2 Replies
May 16, 2010
I have a FileSystem based asp.net 2.0 app that uses Sql Server 2005 Express database.
I have only one dataset for this app with only 4 tables. After i have completed it to a part, a co-worker have added some Classes to it, which are not in same namespace of myBLL classes.
Then i tried added a new table to the dataset. It like all other tables in that dataset uses SQL Statements to access and manage data.
The problem started after i added that new table. I cannot access it from code. I can access all previous TableAdapters but not this new one.
View 3 Replies
Jan 28, 2010
I have this specific task: I have a contacts table, and when users view a specific contact in details page I want to display a button in the page (doesn't matter anywhere, but inside the detailsview control next to the "edit" hyperlink is better), when it's clicked I want to grab all the info of this contact instance and write it to Response so user can save it through the save file dialog. So far I have two problems1. How do I access the contact? it's displaying on the page but when I tried detailsview.dataitem it returns null, e.result in the datasource selected event handler also returns null...2. I can get the button (outside the detailsview control) to trigger the file download dialog, but how do I achieve the same thing if the button is placed inside the details view which is in turn inside a updatepanel?
View 1 Replies
Feb 8, 2010
I'm attempting to further reduce a dataset/table by various user input. Part of this process is grouping the data by a timestamp prior to a summation. I'm trying to use LINQ and cannot get the data returned that I need.
[Code]....
View 7 Replies
Apr 15, 2010
I am trying to run the following SQL query
string strConString = ConfigurationSettings.AppSettings[ "conString" ];
myConnection = new OdbcConnection(strConString);
myConnection.Open(); // open connection
string strSelect= "select * from tbl_howells_product_data where title like" + "'" + strsearch + "%" +"'" + "order by product_id asc";
OdbcCommand myCommand = new OdbcCommand(strSelect, myConnection);
dtrReader=myCommand.ExecuteReader();
The problem is I need to check to see if any data has been returned from the SQL query, if there are no rows/ data returned by the query then I need to display a message to say that there aren't. I know that there isn't a 'number of rows method' for the dtrReader, so does anybody know how I could do this?
View 3 Replies
Feb 4, 2010
Today I am facing the problem with Typed DataSet using DataSet.XSd file, And How to fetch, Delete and Update the Database through Dataset.xsd file.
View 9 Replies
Oct 15, 2010
I want to be able to access my dataset from other protected methods. So far the only way for me to do this is declare my dataset globally (dataset mydatset = new dataset();) and then within my methods I return the dataset after I'm finished filling it with my SqlDataAdaptor. I don't think this is very efficient. Is there a better way of accessing this. I understand when you give the dataset a table you should be able to access it's value. However the dataset becomes null once another method is called??
View 1 Replies
Mar 4, 2010
I am trying to use a DetailsView to enter a new row into my database, but need to enter a further row in a linked table at the same time.
I am able to use the "iteminserted" event to gain control after the event has completed, but I need the key to the row i just inserted into the main table.
I am using a dataset, so the insert is managed by a tableadapter which has been configured to return an integer with the newly created identity of the row i just inserted.
Does anyone know how I can get access to that identity? is it in the "e" object of iteminserted? how do i find that if it is?
Here is the VB CodeBehind I am using to insert the row in the linked table (the DetailsView has just inserted a row into the "Books" table and the database has just assigned it an identity which should have been returned to somewhere by the tableadapter. I need that identity as a key to the "BookAuthors" table):
[Code]....
This is the ASP code for the DetailsView and the DataSource:
[Code]....
And here is the code for the tableadapter i am using
[Code]....
View 5 Replies
Mar 5, 2010
how do i copy required row in dataset to a new dataset. i have bind a xml into a dataset and i need to display say row 3 to 5 only so i do a for loop but i have encounter problem when trying to copy the rows to a new dataset.
do i have to write the xml to datatable and bind it to dataset and from there copy over ?
View 7 Replies
Feb 3, 2010
Iam facing the problem with creating the Data Access layer using Dataset.xsd file and How to access the data from the file.
View 2 Replies
Oct 1, 2010
give me sample code for insert data to MS ACCESS from grid view using dataset.
View 5 Replies
Sep 18, 2010
i create a loop for select data from one table based on different condition.
e.g.
for ......
select * from [table] where condition 1
select * from [table wheere condition 2
i have a problem, how can i fill each select into one dataset
since i want to display all and bind into gridview
View 5 Replies
Mar 14, 2010
I have a standard gridview, with the standard paging and sorting interface enabled.The application holds appointments for three organisational units, with a maximum of 3000 appointment records being returned across all three units. The appointment records are quite small.
The choice I am faced with is to:
1. Have an Org Unit dropdown which returns to the datasource on change of selection and at inital databind, and returns appointment records for one org unit at a time i.e. approx 1000 records.
2. Have the objectdatasource return all 3000 appointment records for all org units at initial databind, and filter the objectdatasource by org unit on change of selection, thereby saving a trip to the datasource.
I guess the question boils down to identifying the point at which querying the datasource by org unit is more efficient than filtering the records returned by org unit.
Is 3000 records a lot for a gridview to be paging and sorting etc.
View 3 Replies
Apr 24, 2010
is datable data store in asp.net dataset.. ?
View 1 Replies
Jan 19, 2011
I have an application that needs to read data from a view and do some extensive manipulation prior to delivering it to a chart control (without modifying the original data in the database). I have the chart control on the page, and in the code-behind I've built a dataset which I load and manipulate programmatically to have the table, columns and rows needed (no datareader involved) I'm having considerable trouble binding the chart to the 'in memory only' dataset. Chart Control;
[Code]....
Code-behind; The arrays arDate(), arPropBase(), arPropRisk() and arProject() are declared and loaded prior to this code. I am certain that the arrays do contain valid data - I have verified that while debugging
[Code]....
I have tried many different ways to bind the chart to my dataset at runtime without any success;
[Code]....
View 1 Replies
Apr 23, 2010
I am having trouble inserting data into the table using dataset..following is my code:
[Code]....
The m_id is a primary key..I want to auto-increament it everytime a data is inserted into the table so I have configured (isIdentity) to Yes and Identity increament to "YES"..I don't know if its right or not..I already added some data manually into the table but now I want to add more data using the above code..but its not working..
[code]....
View 10 Replies
Sep 29, 2010
I've got a SqlDataSource that is created in the markup and would like to transfer the data to a dataset in code behind. How do i do this?
View 2 Replies
Feb 9, 2010
I try to use a DataViewManager to filter data in a dataset, but somehow it does not work. The code below produces the error "A field or property with the name '< any field>' was not found on the selected data source". However, when I replace "GridView1.DataSource = dvm" with "GridView1.DataSource = ds" it works.
[Code]....
View 5 Replies
Mar 15, 2010
I'm hoping someone can point me in the right direction. I will be as detailed as I can in explaining the issue;I have a dataset I have instantiated in a class file (vb.net), and fill the data succesfully. That data is then dumped into an excel file. What I need to do is to go through all the data in the dataset, and directly update the database, changing a "status" column from "pending" to "processing" based on the store number. As I am new to datasets (relatively speaking, of course), I am not quite certain how to accomplish this task. Below is the code I have so far:
[Code]....
If anyone could provide sample code to use, or could provide a quick bit of code I could just copy and paste in and test,
View 1 Replies
Jul 13, 2010
I have recently converted all my applications to framework 4.0 and am very happy as a whole.
I have, however, run into a bit of a bind: i have exposed quite a few web services that have methods returning datasets.
Clients immediately started complaining that the order of the tables within the returned datasets were different. I investigated and can confirm that the webmethods are indeed shuffling the tables within the datasets. The order of tables in the method result are markedly different from the table order in the code before being returned.
My question is: is it possible to hard code the order of tables within the dataset being returned by a webmethod? I know that clients should, ideally, be referencing the tables via the table names, but that is - unfortunately - not the case in the really real world.
View 1 Replies
Nov 19, 2010
using vb.net 2005 and crystal reports. in the vb.net code I am querying the database, processing the results and then binding to the crystal report.
What I need to do now in the code is this: I need to create a new page to display the results so that there is one page for each row in the dataset that I'm binding to the report.
View 1 Replies
