Web Forms :: Retrieve Data Then Loop On Each Record?
May 17, 2010
i have a website that needs to retrive some records in the database, to be specific, example is their Email Address, its more or less 10 records out of 100 records in a table but that number changes from time to time. upon retriving their Email Address, i need to Email them some messages one email at a time.
So to summarized it all:
1. Retrive data from a table (Email Address)
2. Make a Loop on each Email then send Message one email at a time.
give me a sample codes for the retriving and looping process?
I want to retrieve the data from the last record of a table. For eg: I have sorted the data in my table and want the value from the last record? How can I do that?
Is there a way to check that "saving" data to a table was successful and then do something after that?
Not sure why this is messing with my brain so much today, but I have a SQLDataReader that loops through "Customer" records. In each loop there are MANY other conditions that need to be validated. When a condition fails I want it to move on to the next record in the reader. As you see from my code below, I have simply been exiting the for loop and then checking if I should run other loops all the way down. I want to simply move back to the top of the While Loop for another pass when something like this happens:
i am using asp.net and datagrid i want to show record on datagrid with 3 column but data will be unlimited i want to show record data into datagrid
my table name is user_detail and fields are User_name.Name,Passwordwell i m confussed i m using vb6 which i use recordset in replacement in asp.nety wht i use using access.
i cannot retrieve the new identity value from an inserted record(via DataAdapter.Update) in my DataRow.
I'm using a strong typed Dataset as DAL. The table i want to update is joinded with other tables in the SelectCommand, hence the designer cannot automatically generate the insert-/update-/delete-commands and also it cannot "Refresh the DataTable" automatically. [URL]
I've tried to set AutoIncrement=true/false on the primary-key's DataColumn but the result is the same: last MAX-ID+1 instead of the actual ID the database generated(SQL-Server 2005 EP; pk datatype:int, Is identity:yes, Identity Increment:1).
This will be the wrong value f.e if another instance of the application inserted a record that the first instance yet not knows and therefore generates an ID that already exists.
To retrieve the new identity from db i've appended following to my insert-command's CommandText:
;SELECT CAST (SCOPE_IDENTITY() AS int) AS newIdRMA
Also i've tried to add an Output-Parameter to it's parameter-collection:
This is part of my code that updates the database and sets the new ID(that doesn't work):
is there any way I can retrieve the identity value (auto generated primary key value), of a column after inserting a new database record using linq to sql? i could i achieve this like this using stored procedure: //***insert some recor*** return @@identity. how do I achieve thesame with linq to sql
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 .
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.
I'm using a detailsview control to update a record, however in this particular case there's only one field that can be changed out of a many. The update method for my object takes all fields as parameters. When the detailsview's updating method fires, the values for the readonly fields (those rendered as a Label) are not available in the e.NewValues collection.
I'm currently grabbing a reference to the object when the detailsview is databound (in the objectdatasource selected event handler), storing it in session and manually adding entries to the e.NewValues collection when updating fires. It works but seems kind of heavy handed. So, is there a better way to get the read only values back into my update method? Or is there a better way of doing this altogether?
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?
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.
i have textbox1 and textbox2 and 8 checkboxes in my ASP.NET (VB.NET) webform. i want to retrieve the seats on the particular dates means if i enter 11/12/2010 in textbox1 then in textbox2 the output would be from seat_select column, let say (1,2,3) where date would be 11/12/2010 If i enter 13/12/2010 in textbox1 then in textbox2 the output would be 1,2
I am in a serious trouble right now, i wanted to know that how to write a query in LINQ to SQL to retrieve identity column's current value before inserting any value.
I need this cos i m building a windows app n i need to display this value before inserting a record. I have tried DataContext.ExecuteCommand('DBCC CHECKIDENT (Tablename)') but it returns the number of rows modified.
What I am trying is, whenever user enters his Name and Address into the textbox on the webpage, I am going to displaying it in a Gridview. Now if second member will do the same thing thing the GridView will be updated and his Name and Address will display in second row and likewise for other users. But what happened in my code is when second user will try to add his record, it remove the record of first user and add the record of second at row1. I want the record should be added one after another. below is my code
How do I loop through a GridView (the actual GridView, not its data source) to check what's displayed in the first cell (a BoundField with int data) of every row?
Is it possible to loop through a gridview and based on if a checkbox is checked, then change the backcolor to that current row? I have gave a few attempts, but luck.
