Bind Grid To SQLce Data That Is Being Updated From Another Thread
Dec 17, 2007
Hi
We are building a near real time application in Windows Forms, that stores data in SQL Compact Edition.
The client receives messages via UDP socket and performs insert / update operations to the db accordingly, and the requirement is to update a data grid with the changes.
We tried querying the db and receive a ResultsSet which is sensitive and scrollable, and bind a ResultSetView to the Grid. But, since the updates are made from another thread, the grid is not being refreshed.
What is the best approach for achieving this?
Thanks in advance,
Guy Burstein
http://blogs.microsoft.co.il/blogs/bursteg
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Nov 27, 2007
I am sending a GUID to a form via the query string. If it exists I use helper functions to load most of the form text boxes. However, if it does not then a blank form is presented and the GUID is stored in a hidden field.
Regardless, I use this hidden field to populate a grid that is attached to a sqldatasource.
If I then add new datarows to the backend database programmatically, I cannot 'requery' the datasource to include those row upon a postback. I cannot seem to find a simple way to force the sqldatasource to rerun the query.
Can anyone help.
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May 2, 2007
Hi ! I have a textbox and a Search button. When the user inputs a value and press the button, i want a datagrid to be filled.
The following code runs:
Dim connect As New Data.SqlClient.SqlConnection( _
"Server=SrvnameSQLEXPRESS;Integrated Security=True; UID= ;password= ; database=dtbsname")
connect.Open()
Dim cmd As New SqlCommand
Dim valor As New SqlParameter("@valor", SqlDbType.VarChar, 50)
cmd.CommandText = "Ver_Contactos_Reducido"
cmd.CommandType = CommandType.StoredProcedure
cmd.Connection = connect
cmd.Parameters.Add(valor)
cmd.Parameters("@valor").Value = texto
Dim adapter As New SqlDataAdapter(cmd)
Dim ds As New System.Data.DataSet()
adapter.Fill(ds)
GridViewContactos.DataSource = ds
GridViewContactos.DataBind()
connect.Close()
I drag a datagrid on the page and only changed its Id.
Into the SQL database the stored procedure is the following:
ALTER PROCEDURE [dbo].[Ver_Contactos_Reducido]
(@Valor VARCHAR(100))
AS
BEGIN
SET NOCOUNT ON;
SELECT NombreRazonSocial, Nombre, Apellido,TelefonoLaboral,
Interno, TelefonoCelular, Email1, Organizacion
FROM CONTACTOS
WHERE NombreRazonSocial = @Valor OR Nombre = @Valor OR Apellido = @Valor OR TelefonoLaboral = @Valor OR Interno = @Valor OR
TelefonoCelular =@Valor OR Email1 = @Valor OR Organizacion= @Valor
END
When i run the page i can't see the datagrid, and after i enter a text and press the button, nothing happens. What am i doing wrong??
Thks!!
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Jun 20, 2007
Hello all,I just have problems to bind the data to dropdownlists, and my code is written as: SqlConnection myConnection; SqlCommand myCommand; SqlDataReader myReader; myConnection = new SqlConnection(); myConnection.ConnectionString = ConfigurationManager.ConnectionStrings["NorthWindConnectionString"].ConnectionString; myCommand = new SqlCommand(); myCommand.CommandText = "select PostalCode from Customers order by PostalCode asc"; myCommand.CommandType = CommandType.Text; myCommand.Connection = myConnection; myCommand.Connection.Open(); myReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection); DropDownList1.DataSource = myReader; DropDownList1.DataBind(); myCommand.Dispose(); myConnection.Dispose();Any idea? Thanks
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Jun 2, 2008
Hi,
Any one tell me the best process to bind the data to datagrid?I am using this method,it is taking lot of time to fill data to datagrid.
conn = new SqlCeConnection("Data Source=\sample.sdf; Password =''");
dt = new DataTable();
da = new SqlCeDataAdapter(Quary, conn);
da.Fill(dt);
DataaGrid1.Datasource=dt;
Any one tell the best method?
Regards,
venkat.
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Jul 8, 2013
I am working on a school project and have come up against a bit of a sticking point. I am supposed to be creating a very basic OMS, the teacher themselves have said they do not know how to do this (in previous years it has all be done via Access) but apparently I am a lucky one to be doing it in SQL this year.
So I have 2 tables for products in the system
products
+-----------+------------+
|productid |productname |
|Int |varchar(50) |
+-----------+------------+
productdetail
+---------+----------+------------+------+------+
|detailId |productid |description |price |stock |
|Int |Int |Text |Money |Int |
| |FK_From_ | | | |
| |productid_| | | |
| |products | | | |
+---------+----------+------------+------+------+
One of the user requirements of the OMS is to fill a data grid with product name and the product details which I have the query for or rather I have created a view for, which is then queried from a stored procedure.
CREATE VIEW [dbo].[v_stock]
AS SELECT tab_products.productname, tab_productdetails.description, tab_productdetails.image, tab_productdetails.price, tab_productdetails.stock
FROM tab_productdetails INNER JOIN
tab_products ON tab_productdetails.productid = tab_products.productid
The problem I am having is then returning the data from this query into a data grid, I think the reason is because when I attached the stored procedure to a table and then call that procedure via the table adapter there is a mismatch of the schema - specifically the table it is attached to does not contain the column "productName".
I am thinking I need to create a temporary table to fill the data grid with - however, I am not sure how I would create a temporary table.
Is there something I am missing or not done correctly. As far as I can tell the queries work as when I preview them they produce the expected results.
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Oct 23, 2006
what datafield shoud i put in my database if its a checkbox option? coz in my datagrid i added a checkedbox so that i can easily manipulate it.but when i run it. it produces error. and doesnt recognize the checkbox column.it said that there none in the datasource.but i dont know what should i put in the database! pls help!thanks
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Apr 18, 2008
What is the vb.net syntax to bind data from a sqldatasource to a hidden field in a form?
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Sep 17, 2007
Hi,
How do we set credentials or contex to a thread.
I create a new thread and within that thread if I am use a connetion string with Integrated Security=True" to talk to the SQL Server, however it seems that the new thread's context/identity is blank and hence failing the SQL Server connection.
Please help.
Thanks
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Apr 4, 2007
I've created a Data Set with a connection string to my sql database however when i go to create queries and select 'generate update, delete and insert statements' it doesn't do it. I'm wondering why and how do i get this fixed since i don't know how to code it myself.
Thank you.
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Aug 12, 2004
I need to display data from a sql server 2000 db on an asp web page and I need a vertical split. Does anyone have any solutions? I really can't afford to spend much/any money so freeware/shareware or coding suggestions is what I am interested in.
Thanks!
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Sep 20, 2007
I have tried to code a href link to bind the data from a Stored Procedure, as shown below.This herf string failed. How to use these special characters, ' < " > ) ?Or how can I use sb(string builder), which I have used successfully for display the data.
TIA,Jeffrey<%cmd.CommandText = "MyProgramsA"cmd.CommandType = CommandType.StoredProcedurecmd.Parameters.Add(New SqlParameter("@meid", SqlDbType.Int))cmd.Parameters("@meid").Value = EmpIdcmd.Connection = sqlConnection2sqlConnection2.Open()reader4 = cmd.ExecuteReader()While reader4.Read()%>
<a href="http://sca3a56/'<% reader4(i).ToString() %>' "><% Response.Write(sb3) %></a><br />
<br />
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Dec 1, 2007
I am trying to set a variable to be passed to my asp page but the value is not carrying over. I don't even know if this is supposed to work or not below:
<td colspan="3" style="font-size: 10pt; vertical-align: top; color: <%=Div7fontcolor%>; background-color: <%=Div7bgcolor%>; text-align: center; width: 0px;" id="TopBox" runat="server">
The above Div7fontcolor and Div7bgcolor are variables that I set in the VB file as shown below:
Dim obConnection As SqlConnection = New SqlConnection("Data Source=localhostsqlexpress;Initial Catalog=OrgBoard;Integrated Security=True")Dim obCommand As SqlCommand = New SqlCommand("SELECT Divisions.*, Dept19.*, Dept20.*, Dept21.*, ConfigDisplay.* FROM Divisions CROSS JOIN Dept19 CROSS JOIN Dept20 CROSS JOIN Dept21 CROSS JOIN ConfigDisplay", obConnection)
obConnection.Open()Dim dr As SqlDataReader = obCommand.ExecuteReader()
dr.Read()
Dim Div7bgcolor As String = dr("Div7color").ToString().Trim()Dim Div7fontcolor As String = dr("Div7textcolor").ToString().Trim()
dr.Close()
obConnection.Close()
The web page runs fine with no errors but the value does not carry over and change the property correctly.
I am able to set the bgColor value of the TopBox within the VB file if I use "TopBox.BgColor = Div7bgcolor" but I can't set other values on my web page like the font color. If I can do this from the VB file then please correct me. Using variables within the page will allow me to set almost any value but I don't even know if what I want is possible. Any help is greatly apprectiated.
Thank you,
Kris
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Jul 22, 2004
Hi I want to update the grid which in turn will load data to a few tables: the main table and it's lookup tables, I want to write a stored procedure that will check if the data from lookup table already exists and if not it will insert it
but I am only starting to get to know stored procedure structure
could you give me some advice on how to write such procedure I would be veeeery gratefull
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Jul 19, 2013
I want to update a data in grid view
I have three columns in grid view
First two column are shift id and date these two column are taken from table 1
The third column is shift column this column are taken from table 2
Now I want to update a data where shift id and shift column are same
table 2 have these column
shift
shiftid
and table 1 has these column
shift id,
date
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Apr 3, 2006
Hi guys,
The default Engine Thread property of a data flow task is set to 5, is this the best setting? what if I would like to run complex data flow tasks on multi-processor machines, should I increase the engine thread? If so, then what is the recommended Engine Thread number for running complex data flow tasks in a multi processor system?
Even if i am running simple data flow tasks on a multi processor machine, should I change the engine thread?
Thanks!
Kervy
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Jan 18, 2007
I have the following code: Imports System
Imports System.Data.SqlClient
Namespace TestWeb
Partial Class araging
Inherits System.Web.UI.Page
Private _dt As DataTable
Private _connstr As String
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim _connstr As New SqlConnection(ConfigurationManager.ConnectionStrings("ESQLConn").ConnectionString)
Dim sqlCommand As SqlCommand = New SqlCommand("csp_rpt_ack_form", _connstr)
sqlCommand.CommandType = CommandType.StoredProcedure
Dim objaDapter As New SqlDataAdapter(sqlCommand)
objaDapter.SelectCommand.Parameters("@v_order_doc_no").Value = 272
Dim ds As New DataSet
objaDapter.Fill(ds)
mainGrid.DataSource = ds
mainGrid.DataBind()
Response.Write(_connstr)
End Sub
End Class
End Namespace
I am trying to pass a value to the parameter that it contains. What Im I doing wrong? I keep on getting the following message."An SqlParameter with ParameterName '@v_order_doc_no' is not contained by this SqlParameterCollection." Thanks guys!
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Apr 12, 2004
I try to find the way to create editable data grid (a view from MySQL database) in a web page. So, user can edit, add, or delete from one page instead of having switch edit, insert pages, one field in the view only. Any script I need to write or any special server behavior I can use?
Thanks a lot any one can help with.
Ann
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Jan 1, 2013
I have a table which stores all prices for companies daily trading. Companies ABC & XYZ have information available for what was the high & low values for a DateID.
CREATE TABLE [dbo].[TestGrid]
(
[ID] [int] IDENTITY(1,1) NOT NULL,
[CompanyName] [varchar](200) NOT NULL,
[DateID] [int] NOT NULL,
[High] [float] NOT NULL,
[Low] [float] NOT NULL
[code]...
What I'm trying to do is turn the DateID into columns and then as a additional change those columns represent the actual day of the Date ID How would i know 20121201 is equal to say Monday and 02 is Tuesday?
END RESULT:
NAME TYPE MONDAY TUESDAY WEDNESDAY
ABC HIGH 0.5 0.6 1
ABC LOW 0.1 1.5 0.6
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May 3, 2015
I have table in sql server for Employee, it has(id, Employee, director),so the director field is id of the director's name,  so the director is employee and has director also, only the first director hasn't director( one Employee has not director);now, i want to use datagridviewer in c# for display as this table (id, employee, director), so the first record will be the (id, employee, '  ');i use this query:"select emp.ID ,emp.Name ,dir.Name as'director'  from table1 emp, table1 dir where (emp.director=dir.ID OR  dir.director IS NULL)"but when i display the datagridviewer , it don't display the first employee(first director) which hasn't director.
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Aug 28, 2007
Has anyone ever looked at the way the grid data viewer sorts it data when
clicking on a column header? If you click on a column header, something
happens to the sorting of the data in the viewer, but it's not always clear
to me _what_ is happening. It appears the data is sorted ascending on the
column you clicked on. If you click again the sort order seems to inverse to
descending. However, if you look closely, it turns out that the data is not
always sorted correctly, especially when you click on an integer valued
column.
I found this when doing a demo on the AdventureWorks demo extracting data
from the SalesOrderDetail table. If you sort on the OrderQty column, data is
correctly sorted in ascending quantities. However, if you click the column
again, orders with an order quantity of 2 are displayed on top (while there
are orders with a much higher order quantity) and if you scroll down the
list, you notice that there is no clear sorting anymore. The same happens
with other columns.
Is this supposed to work as I would expect it to do or is there a logical
explanation for the behaviour I see?
--
Best regards,
Hans Geurtsen
Docent Kenniscentrum
Info Support
De Smalle Zijde 39
3903 LM Veenendaal
The Netherlands
www.infosupport.nl
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Feb 6, 2006
I am currently upgrading our ppc app (written in .net 2003) to .net 2005 and from sqlce 2.0 to 3.0. The new application runs out memory(storage) when handling lots of data transactions (both in case of using sqlcedatareader, and dataset ). There is no memory leak issue here, sqlce 3.0 simply uses a lot more (3 times more) memory than sqlce 2.0.
Our applicaton runs fine using sqlce 2.0 and .net 2003, but fail due to memory shortage
with the upgrades(which has the same code). Anyone can shed some lights on this issue?
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Oct 23, 2015
I am looking for a way to create a stored procedure that will show inventory availability. I would like to show the Inventory Name, The Date, and if the inventory is "checked out" using the ID name of the person who has the item.
For example it would look like this:
--------------------------------------------------------------------------------------------------
Inventory Name | 10/24/2015 | 10/25/2015 | 10/26/2015 | 10/27/2015 | 10/28/2015
--------------------------------------------------------------------------------------------------
Laptop | Tom | Tom | Tom | Avail | Avail
Projector | Avail | Avail | Avail | Avail | Bob
Air Card | Bob | Bob | Bob | Bob | Bob
It seems like I want to do a pivot table but there really is no aggregate so I am not sure what to use.
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Dec 1, 2006
I have a SqlDataSource that has a parameter that I am trying
to set.
The item is stored in a session field called “GameObject�
Game Object is a simple class that has a several variables.
I am trying to access the .name data member of the class.
<asp:SessionParameter Name="GameCode" SessionField="((GamingSystem)Session[‘GameObject’]).Name" />
This does not work. Is there a way to declarative bind to
the item that I am for.
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Aug 30, 2007
Hi every experts
I have a exist Stored Procedure in SQL 2005 Server, the stored procedure contain few output parameter, I have no problem to get result from output parameter to display using label control by using SqlCommand in Visual Studio 2003. Now new in Visual Studio 2005, I can't use sqlcommand wizard anymore, therefore I try to use the new sqldatasource control. When I Configure Datasource in Sqldatasource wizard, I assign select field using exist stored procedure, the wizard control return all parameter in the list with auto assign the direction type(input/ouput....), after that, whatever I try, I click on Test Query Button at last part, I always get error message The Query did not return any data table.
My Question is How can I setup sqldatasource to access Stored Procedure which contain output parameter, and after that How can I assign the output parameter value to bind to the label control's Text field to show on web?
Thanks anyone, who can give me any advice.
Satoshi
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Oct 27, 2006
hi,i have an sql database on my server on the world wide web.i can make a connection to the database in visual web developer and all the tables etc are shown in the 'database explorer' of visual web developerwhen i make the query in visual web developer it does retrieve the data froom the remote server database when i 'test query'.... so looking great!the connection string in the webconfig file is left as the default when i run the prgram on my LOCAL HOST with the inbult server that comes with visual web developer it runs fine......so.....running on my local pc it will connect to the database on my www host server and does display the data from that database.i need to change the webconfig files path to the connection by default it is |DataDirectory|if i change this to the path i suspect is correct as this is the connection i use to the database C:Inetpubvhostsarcvillage.comhttpdocsApp_DataTestdatabase.mdfwhen i change the path in webconfig then it stops working on my localhost and the error when i ftp it to my host is:Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed. any ideas?
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Jun 26, 2007
Hi All,
I have just installed SQL Server Compact Edition (including the SDK) for use with Borland Developer Studio 2006. I have an ADOConnection component on my form, but the Provider I want (Microsoft.SQLSERVER.MOBILE.OLEDB.3.0) is not available. Typing in the connection string: "Provider=Microsoft.SQLSERVER.MOBILE.OLEDB.3.0;Data Source=C:Program FilesMicrosoft SQL Server Compact Editionv3.1SDKSamplesNorthwind.sdf..." results in an "Unspecified Error". I have checked the HKEY_CLASSES_ROOTCLSID and the provider associated with SQLCE is not there.
I've read a couple of posts indicating that it should have been registered during install. Is this the case or do I have to do something more to register this provider?
I've checked the assembly (system.data.sqlserverCe - it seems OK) and re-registered sqlceolebd30.dll. I'm not sure what else needs to be done.
TIA,
Luke
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Jun 28, 2007
I have an application where I'm trying to store xml data in a db field defined as ntext. I have a dataset and table adapter setup in VSNet 2005 and SqlCe 3.1. When I look at the table adapter in the VS designer it shows the field with a type of String and a size of 2147483647 which appears to be correct. Also, if I look at the code generated by the MSDataSetGenerator tool it shows the parameter defined in the same way as in the following
param = new System.Data.SqlServerCe.SqlCeParameter();
param.ParameterName = "@Questions";
param.Size = 2147483647;
param.IsNullable = true;
param.SourceColumn = "Questions";
this._commandCollection[2].Parameters.Add(param);
My problem is that when I run the application and try to insert an item into this column the application throws an exception related to corrupted memory. Trying to debug the problem I found at run time, the param.Size value for the ntext parameter had been set to 255. Since the specific xml I was trying to insert was 410 characters in length I'm guessing that this is what is causing the crash.
Is the expected behavior (the setting of the size to 255 that is)?
If not, am I missing some trick here?
Thanks
Neil
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Mar 13, 2006
hi,
Problem: Synchronize the data between sqlce in pocket pc emulator and sql server 2000 in desktop computer.
Given: i have configured the IIS and while connecting the pocket pc IE to sql ce server agent..evreythings ok.
called the synchronize method.
ERROR: normally two error occurs:
native error 29045
and native error 29006
connecting with sql server reconciler failed..
any bidy can tell me what is sql server reconciler and why these error occurs...
moreover: if someone can tell me how the sql server 2000 interacts with IIS.
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May 11, 2007
I have the membership stuff up and running. I've added a field to the membership table called custnmbr. Once a user logs in, I want store his custnbmr in the session and use that to lookup data in another db.
ie: Joe logs in and his custnumbr is 001, he goes to the login success page and sees his list of service calls which is:
select top 10 * from svc00200 where custnmbr = 001 (the membership.custnmbr for the logged in user)
I know how to do this in old ASP using session variables....but I have no idea where to even start with .Net.
Many thanks
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May 7, 2007
Hi JayH (or anyone). Another week...a new set of problems. I obviously need to learn .net syntax, but because of project deadlines in converting from DTS to SSIS it is hard for me to stop and do that. So, if someone could help me some easy syntax, I would really appreciate it.
In DTS, there was a VBScript that copied a set of flat files from one directory to an archive directory after modifying the file name. In SSIS, the directory and archive directory will be specified in the config file. So, I need a .net script that retrieves a file, renames it and copies it to a different directory.
Linda
Here is the old VBScript Code:
Public Sub Main()
Option Explicit
Function Main()
Dim MovementDataDir
Dim MovementArchiveDataDir
Dim MovementDataFile
Dim MovementArchiveDataFile
Dim FileNameRoot
Dim FileNameExtension, DecimalLocation
Dim CurMonth, CurDay
Dim FileApplicationDate
Dim fso ' File System Object
Dim folder
Dim FileCollection
Dim MovementFile
'======================================================================
'Create text strings of today's date to be appended to the archived file.
FileApplicationDate = Now
CurMonth = Month(FileApplicationDate)
CurDay = Day(FileApplicationDate)
If Len(CurMonth) = 1 Then
CurMonth = "0" & CurMonth
End If
If Len(CurDay) = 1 Then
CurDay = "0" & CurDay
End If
FileApplicationDate = CurMonth & CurDay & Year(FileApplicationDate)
'=====================================================================
' Set the movement data directory from the global variable.
MovementDataDir = DTSGlobalVariables("gsMovementDataDir").Value
MovementArchiveDataDir = DTSGlobalVariables("gsMovementDataArchiveDir").Value
fso = CreateObject("Scripting.FileSystemObject")
folder = fso.GetFolder(MovementDataDir)
FileCollection = folder.Files
' Loop through all files in the data directory.
For Each MovementFile In FileCollection
' Get the full path name of the current data file.
MovementDataFile = MovementDataDir & "" & MovementFile.Name
' Get the full path name of the archive data file.
MovementArchiveDataFile = MovementArchiveDataDir & "" & MovementFile.Name
DecimalLocation = InStr(1, MovementArchiveDataFile, ".")
FileNameExtension = Mid(MovementArchiveDataFile, DecimalLocation, Len(MovementArchiveDataFile) - DecimalLocation + 1)
FileNameRoot = Mid(MovementArchiveDataFile, 1, DecimalLocation - 1)
MovementArchiveDataFile = FileNameRoot & "_" & FileApplicationDate & FileNameExtension
If (fso.FileExists(MovementDataFile)) Then
fso.CopyFile(MovementDataFile, MovementArchiveDataFile)
' If the archive file was coppied, then delete the old copy.
If (fso.FileExists(MovementArchiveDataFile)) Then
fso.DeleteFile(MovementDataFile)
End If
End If
Next
fso = Nothing
folder = Nothing
FileCollection = Nothing
Main = DTSTaskExecResult_Success
End Function
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Mar 11, 2006
i am using C#..net
I am synchronizing the sql server data with sqlce.but i get an
error when i call synchronize function. i am using sqlcereplication
class.
the error is
"a call to sql server reconciler failed"
native error 29006
and sometimes
native error
29045.
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Jan 11, 2007
Hi,
Can anybody pls help me with this,
i have to migrate data from one sql server(1) to another sql server(2) using SSIS,Which is a bit easy,the concern here is that after doing it the data in server(1) is getting updated due to inserts,now i need to bring the updated data alone.Is anybody having experience in this?can anyone pls help me or give me sugessions on how i need to proceed.
Thanks in advance.
Regards,
Sg
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