Using Multiple Rows Of Data Retrieved From Database
Jan 4, 2012
I am trying to select multiples rows from a database table and insert the text into several "label" controls. For example, if the database search returns 5 results. then insert the first row's text into label 1, the second row's text into label 2, and so on. The number of rows will be variable. I was thinking of a while statement. I am having a problem understanding how to even seperate multiple rows from a query in VB. Would using an array for the query results be the right way to go? row one would be row(0), row two's text would be row(1), etc.
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Sep 12, 2011
I have a vb.net web application and when a particular function runs , i get data timeouts in the rest of the application..(ie..row not found errors or column does not belong to table but it does) The function is adding multiple rows in multiple tables in the database and is running in a for loop. It seems to be all SQL related but I am not seeing anything in the error logs in SQL or in the application Right now I am assuming it is memory related where to start note..the for loop will be replaced with a bulk insert but right now I jest need to resolve the issue of the timeouts
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Sep 1, 2010
i have a datagrid contol with multiple rows. my database structure and datagridview stucture is same.
now how to insert multiple rows from datagrid to database in vb.net
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Nov 17, 2011
writing to multiple rows in the database using VB 2010?
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Aug 31, 2010
get specific data from below case?. As it is imported from text file, all row data located at A column per Row and total number of rows are more than 30000. From below, I want to get Company name and Address data only out of long text data.
For your understanding, a)Each row start with 6digits number like 3336041, 3336058 etc and end with pin code 6digits. b) there are minimum 4 or more digit's space after company name and each address data.
Result should be got <company name> and <Address field> data only.
for example 1st block should have below format;
PROCON INSTRUMENTATION PRIVATE LTD
244, G S T ROAD, URAPAKKAM,GUDUVANCHERY TAMILNADU, TAMIL NADU Pin:603202
2nd block: to display in another lines as like above - marked as bold in sample text
3rd block: to display in another lines as like above - marked as bold in sample text
[Code]...
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Aug 9, 2011
I am trying to append multiple rows in a SQL Server.I have connected to the MS SQL Server and with a DataAdapter, I have downloaded the Table into a DataTable and displayed it in DataGridView.I now want to programatically enter multiple rows into the DataTable and later to update the SQL Table.
I am trying to build an application to do this generically.The problem I have is that the Table and DataTable has an 'ID' Field. In the SQL DB, i is an Auto-incrementing field.When the code loops through creating new rows and entering field values, how do I handle the ID Field that is the Primary Key?
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Aug 30, 2010
I want to insert records from a datagrid with multiple rows, into the database, is it possible?
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Apr 23, 2012
I have a table with several rows of data that I need to return to the controller. In my view, I initially load the table by selection of a time period and clicking a button. The table loads all my relevant records but one of my table cells contains a dropdown list. So I should be able make a selection in the dropdown click "update" and my controller saves the changes.
So everything works until I try and save. The model that is sent to the controller is completely null. The list property I have tied to the table cells returns to the controller null.
[Code]...
NOTE: This is written in VB.NET but C# help is welcome. I am familiar with both languages in MVC.
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Jan 6, 2011
I have the following table:
----------------------------------------------
ID|Name |City |Phone |IsWorking
----------------------------------------------
1 |Joe |New York |111-111-1111|No
----------------------------------------------
[code]....
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Mar 15, 2011
<VB.Net 2010 + SQL Server 2008 + Linq To Sql>
Let's say I have ten rows on a data grid and I have changed data of three rows.
I am trying to save data by Linq for those three rows, but I am not sure how it is possible to save them.
I can do it by looping whole rows by checking each row for any change.
Is there any smarter way rather than looping by code, such as For Next.
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Jun 21, 2012
I tried the following code which doesn't throw an error but it doesn't show as well in textboxes:
Try
cnobj = con.cn
cmd.Connection = cnobj
[code].....
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Aug 25, 2010
I have an access table that I'm loading into a dataset, then I'm binding the dataset to a bindingsource. The bindingsource is the datasource for a datagridview. I can use a command builder to update the entire table, but I need to update all the rows (or changed rows) in specific columns. I have a column called "dPrint" which is Boolean. I'm not sure how to use the bindingsource as my datasource in an Update Command. I've tried this:
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Mar 21, 2011
is that instead of receiving data from one row and assigning it to the same array Im receiving data from multiple rows, but the information is the same because its from the same one column from the database. The error I keep getting is 'index out of bounds of array'
here is the code
What it does is it loops through once and retrieves the first value from the db then it throw the exception when it goes to retrieve the second value.
Dim qBkNum As String = "SELECT BookingNum FROM Bookings WHERE BookingID = '1'"
Dim bkNum(5) As String
Try
[Code].....
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Dec 13, 2011
I'm using VS 2010 and MySQL 5.5. I've got a data grid view displaying the results of queries entered by the user, shown below. It works; the trouble is that if there's an image in the results, you'll only see a cell-sized very long thin strip of it.
So I want to a) resize any images to a reasonable thumbnail height (say, 100 pixels, naturally maintaining aspect ratio) when displaying them, and b) resize the row to fit them.[code]...
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Jun 11, 2011
I retrieved data from access in vb10 between two dates and here is the code for dat:
Imports System.Data.OleDb
Public Class Form4
Dim con As OleDbConnection
[code].....
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Mar 13, 2010
I have following code retrieving image from access database (OLE object)and assigning it to pic ctrl.
Dim bite() As Byte = CType(dg1.SelectedRows(0).DataGridView("subdivisionimage", dg.SelectedRows (0).Index).Value, Byte())
[Code].....
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May 19, 2010
I am almost there but for some reason I don't find the answer to my issue. Here it goes. In my application I have a form which displays a data grid view with some info I get through XML from a web server. The data grid view have as first column a Check Box colum. The second column have the information I get into a variable (from cells), one by one, to pass it to the sub with the XML command.
What I want to do is to be able to select all the rows and send the cell info of the second row (only for the selected rows) to my sub which will execute once then send the second cell info and execute the sub and so on until all the loop is complete. Currently my code works only if I delete one row at a time (sending the XML code will delete the info in the web server and update the datagridview which in return will remove the item).
[Code]...
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Jan 28, 2009
I have this application which has one class. I need to return a recordset of data to the calling form. If i use Properties to return, it can only return only a single value at a time. Right now i'm returning a datareader object with one of the properties.Can anyone suggest a better way to return multiple rows of data to the calling method via Class Property?
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Aug 16, 2010
I have a form that i want to be saved to my database. The form is adding a new record to my sql server 2005 database but it is not bringing the text over with it. The new record in my db is just an empty row. Here is my code.Add to database section ( i have removed the connectionstring for privacy reasons)
<%@ Page aspcompat="true" Debug="true" %>
<html>
<head>
<title>Form to database</title>
[code]....
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Nov 28, 2011
I am looking for a howto or someone expert in ADO.NET who can explain me how to properly solve the following scenario:I have two datatables in a dataset:
ParentTable (ParentID, Name) for user data ChildTable (ParentID, ActivityID, ...) for schedule data
Tables are linked together at the database level by ParentID which is an Identity column in ParentTable.
Both tables are data bound to a separate DataGridView on the GUI. There supposed to be a "1 parent/N children" relationship between the tables, meaning if I create a new entry in the ParentTable (a new user) I get a clean DataGrid in the child grid to type schedule data for the user. So I setup two DataAdapters for each table to fill their result into a DataSet. I also set up a DataRelation object and assign it to the DataSet to link the two tables by their ParentID columns. Also when I add a row into the ChildTable via DataGrid I use SetParentRow to set the parent row.
[Code]...
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Nov 7, 2010
check the VB behind code for any syntax errors.
Unable to add new rows of data to a database using the DataGrid control.
Compilation Error message is located at [URL] View snap shot images of each line error at [URL]
The VB code behind reads (revision 1.3):
</script>
<body style="font: 10pt verdana">
<form runat="server">
[Code].....
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Sep 26, 2010
i would just like to ask how do i retrieve data rows in my table in my database randomly... i was able to create an online quiz wherein it displays the question,choices in consecutive order but what i want is, every time when user will start a quiz it will show questions in random order. I am using mssql 2005 as my database below is my code.. a
QuizPage.aspx
<asp:DetailsView ID="questionDetails" runat="server" AutoGenerateRows="False"
CellPadding="4" ForeColor="#333333"
GridLines="None" Height="50px" Width="550px">
[code]....
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May 12, 2010
I have a postgresql database, one table. This table has a date column too.And I have this code:
[code]...
The problem is, that the pgreader returns no rows (the parameters are right and the database contains the data too).firstday and lastday are f.e. '2005.05. 01.', the ConvertDate function converts the date to '2005-05-01' (the dates are storen in this form in the database)And when the commandtext="select * from arfolyamok where datum between '2005-05-01' and '2005-05-31'", then it works, the pgreader has the rows.Why? What make I wrong?
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Jun 15, 2010
I have an Access table in which I connect through ODBC commands. I want to delete the 50% of data rows from it. Can anyone knows a string to write for doing that? ALARMLOG is my table. In MS SQL I tryed succesfully the following command :
[Code]...
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Feb 27, 2011
visual basic 2008 express
access 2007 db
I am attempting to fill a form with multiple rows from an access table based off of a parameterized query. My query works fine but I don't want to return one row at a time, I want to return all rows that match my query in multiple text boxes. I know that I can use a datagrid view to accomplish this, but I would prefer the look of a textboxes on a form. I have read through many books and searched the internet forums but think I may just not know what to search for as nothing has worked yet. Can anyone point me in the right direction. So far I have tried setting the text box value to the row().item(), creating a different dataset for each row, and even setting variables for the results of the query to then be passed to the text boxes. Since none of this work, I don't really have any starting code to post. If I could just get a starting point I could work from there, so don't feel the need to code anything for me, just set me in the right direction.
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Sep 15, 2010
I have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
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Jul 27, 2010
when populating a data grid i keep getting a redundant row in the bottom. is there a way to lock grid rows to the number of rows in the data table?
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Aug 31, 2009
I am developing a program and stuck up with an issue. I am able to enter single value in MSAccess database however, when I create a programe to enter multiple entries I am getting an error. developing a code to enter multiple entries in MSAccess 2002 db with the help of VB based form?
I Following code I am using for single entry:
Private Sub Button1_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Enter
Dim query As String
[code]....
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Jan 31, 2009
I have data entries in my database that have a common field. For example:
account_id type user_id
1 new 1
2 old 3
3 new 1
4 old 1
I am using a query like this(mysql): SELECT account_id, type, user_id FROM table WHERE user_id = 1
This is just all theoretical. The problem that I am having with this is it is only returning the first result in this case account_id 1. How can I get it to find all the results with the user_id 1 because in the way I am thinking that it is failing is that it is finding only the first result and then ending?
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Sep 1, 2011
Can anyone tell me why "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound." I keep getting an error "Invalid Operation Exception was Unhandled" error. All I am attempting to do is allow the user to select products from a list(or a second datagridview) and have it added to the datagridview so they do not have to type in every cell since the other cells are not visible because they do not purtain to their needs. Plus they will be able to save all items at the same time.
[Code]...
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