Access :: C# OleDBDataAdapter And Results That Contain A Dash (-)?
Apr 29, 2010
I am running a query on an Access 2000 database from my C# code. Whenever any part of my results contain a dash (-) then my adapater will not fill and will just show no rows. So what I did was use the Replace function in the Access Query. Of course once I did this then I received an error from ASP, because the Jet engine does not know what to do with Replace.
So my question is how do I get this data to fill my adapater if it sometimes contains a dash, but I can't use the Replace function in the Access query? My current C# code is below.
I'm writing a web service that needs to query an Access 2003 database (.mdb). I've found the following code in doing some research on OLEDB connections and queries:
[Code]....
Errors are as follows:
Error 3 A field initializer cannot reference the non-static field, method, or property 'CompleteRentalls.completedb.sqlString'
Error 5 'CompleteRentalls.completedb.da' is a 'field' but is used like a 'type'
Can anyone help me rectify the above code such that the query results are returned to my datatable?
I have understood there is no way to keep leading zeros in a OleDbDataAdapter?
Im trying to read some data from a text file with:
MyCommand = New System.Data.OleDb.OleDbDataAdapter("SELECT F7, F5, F9, F1 FROM " & System.IO.Path.GetFileName(bonnerfil.PostedFile.FileName), MyConnection)
I have managed to keep leading zeros if I add a Schema.ini file into the directory with column set to Char.
But, when having a Shema.ini the select statement reads from start to end of the file. As you see in my select statement I prefer/must have the coulumn 7 first being read and so on. This do work and I will have get the result I want. But for now itīs either - get the order of columns correct or have leading zeros.
how can I either have a Schema.ini that reads the file in the order I want, or keep leading zeros and not have the order I want.
I'm using a OleDbDataAdapter object to fetch certain data from a database and place it in a data set object. The code for this is presented below:
oleConn = new OleDbConnection(WebConfigurationManager.ConnectionStrings["PTDB-ConnectString"].ConnectionString); oleConn.Open(); oleComm = new OleDbCommand("spGetPartRevisionFromSN @SerialNumber = " + SN, oleConn); oleComm.CommandType = CommandType.Text; ds = new DataSet(); da = new OleDbDataAdapter(oleComm); da.Fill(ds); //<--OleDbException occurs here
My problem is that when the program reaches the Fill method of the data adapter, I receive an OleDbException with the error being "Incorrect syntax near 'SN' ", where SN is an alphanumeric serial number. I have a few SNs that I'm testing, the pattern I notice is that the method seems to run fine with an SN that begins with a letter, e.g. "J123456", but this exception gets thrown for every SN that begins with a number, e.g. "1ABCDEF". I'm not alterting the SNs, which are just strings, in any way and I've run the SELECT query, defined in the stored procedure, in SQL Server Management Studio with both kinds of SNs without a problem.
I am trying to make an asp site where someone types in a search term, then google (or any search engine) is searched for that search term and the resulting urls are compiled into a database.
Is this possible? How would i access the search results?I have seen other websites that do something similar - for example on one site you type in your search term and your website, and it comes back with which page your site is for that search term - how does it access the search results?
I have a .NET 4.0 console application that does a lot of reads from SQL Server 2008 using the OleDbDataAdapter object.I tried to improve performance by spreading the processing logic across four threads using Visual Studio 2010's Task Parallel Library. Sadly the multi-threaded version is three times slower than the original. Using VS2010's performance tools, I found thousands of thread contentions caused by the method OleDbDataAdapter.Fill() which populates a DataSet.This is puzzling as there are no static classes or variables involved that would result in the OleDbDataAdapter being shared by my threads. Also, four simultaneous connections just can't cause a hold up at the database level, right? The default connection pool size should be much larger than this.
I've managed to use my MS Access database with repeaters and gridviews in my website. Basically, printing the result of a query directly to the website seems easy enough using something like this :
[Code]....
After quite a bit of googling this seems to be a common way to do this. My question then seems kinda silly.
I want to use some of the data from the query in for example a variable without sending the data to a repeater or gridview and so on. Say I just want the username and a password from a database and want to store the username in one variable and the password in another for further use in the code. What do I do?
I tried to query an excel file which contains a lot of customers' information but my problem is most of those don't have a specific column names. E.g. it's in the following format. (Excel File)
A B C Info1 blur blur Info2 blur blur Info3 blur blur
So, when I query using SqlDbDataAdapter, in my DataTable, info1 blur blur becomes column header. e.g. it's in the following format. (DataTable)
Info1 blur blur Info2 blur blur Info3 blur blur
I been working on it so that it actually goes down one row and Change the column name in the DataTable into some appropiate name. Something like the following format.
Is there any way that I could work around it rather than actually going back to change the excel files ? Because I have like 1,000 excel files in that kinda format and seriously giving me headache now.
I have problem with select statement in System.Data.OleDb.OleDbDataAdapter My code is:
Dim adp As New System.Data.OleDb.OleDbDataAdapter("select * from tblMember where username='"& emailV &"' and PWD='"&PWDv&"' ", con) Dim dt As New System.Data.DataTable adp.Fill(dt)
it has problem with username='"& emailV &"' and PWD='"&PWDv&"'
I have a task in which i have to compare 2 access databases
and in these 2 databases, there is a field "Customer_Name" Let's name both databases as DatabaseA and DatabaseB
In DatabaseA there is a list of Customer_Name that includes all the customers
Now I have to match this CustomerList with "Customer_Name" field present in DatabaseB
If Customer Name of DatabaseA is present in Customer Name of DatabaseB then leave it as it is
If Customer Name of DatabaseA is not present in Customer Neme of DatabaseB then rename the name of that customer as "NA" in DatabaseA'S Customer Name field
So i have to perform these 2 above mentioned things, is it possible to do it in asp.net coding ? just with a press of button (in button click even) to save time as the list of customers includes 3000 customers approx
I am having a lot of trouble with a seemingly simple thing. In an ASP.NET webform I have two ListBoxes, with Add and Remove buttons in between. The user can select items in one ListBox and using the buttons, swap them around. I do this on the clientside using javascript. I then also have a SAVE button, which I want to process on the server side when the user is happy with their list.
Problems : First I was getting the following problem when I clicked SAVE :
Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. I read that one of the methods to get around this was to put my ListBoxes into an UpdatePanel, which I did, and I am getting further.
However, now the event handler for the button's Click event is not being run if the user has used the clientside javascript to alter the contents of the Listboxes. If the user has not altered the contents of the listboxes, the handler does execute.
I have developed a website that allows users to upload office documents then uses the office object model to convert the document to an HTML file that it then displays in an iFrame. I have, of course, included references to Office.interop.word, and the site works fine on my development machine. When I uploaded it to my production server the site functions fine until I try to upload a document. I initially got a similar error that said "COM object not registered". I realized that Word wasn't installed on my production server. So I installed word and now when the server tries to access the word object model I receive the following error:
Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
I searched the registry for the corresponding CLSID and found a corresponding folder. I added full control to the IUSR_ account and due to the persistence of the error I eventually added full control to "everyone" and ensured these permissions inherited down to the rest of the folder. I then added full control to IUSR_ and again eventually added full control to "everyone" to my microsoft office folder. I don't know what other permissions to grant and where in order to make this "Access is denied" error go away. I must be granting them in the wrong place, because as far as I know I can't be any more permissive than "Everyone" "Full Control".
The problem is that i have a search page. Access Database holding the information. I have a Access Datasource on the page with a Datalist to show the data. I need to find a way on setting it up to says "Sorry no results found" when the is no results. i am unsure on how to do this though.
Is there anything missing in IIS 6.0 that prevents me from (Insert into table) using MS-Access?
Explain: The application works fine under Visual Studio 2008 IDE the insert into table works fine with no error, Also I tested with hosting provider and works fine with no problem. but now I have published the same exact app in a dedicated server windows 2003 with IIS 6.0 .NET framework 2.0 with latest service pack I gave IIS_WPG write/modify access to the folder where MS-Access database is located and database but at the time of insert an error pop-up. I need to install in the Server or settings in the IIS to recognize my MS-Access db is it some office runtime that I am missing. (BTW I am using OLEDB connection string in my C# )
Using System.Data.OleDb;
I can retrieve data off of it with no problem but when I try to insert is when it fails I thought the problem was Access Rights but I do not think is the case.
1) the default page loads, it will read the Windows Login of the user opening the page. 2) I'll check if this login exists in a table stored on the webserver.
In this Access Database, there's a 2nd linked table, pointing to another access table on a network location. Now, I want to read data from this linked table. However, at this moment I receive an error:
"The Microsoft Jet database engine cannot open the file '\<ip><shared-folder>statistics.mdb'. It is already opened exclusively by another user, or you need permission to view its data".
Some extra info:
- The network folder has read and write permissions for everyone
- the user and group permissions on both access files are set to read/modify/administer for the Admin user (on the tables I want to read from)
- IIS authentication on the server is set to "Windows Authentication" (this is needed so I can read the Windows Login from the user). All other authentication modes are disables (like anonymous, ...)
- When the error occurs, no other program or process has access to the statistics.mdb (so, it can't be locked by someone else)
Like I said before, in this statistics.mdb file, there are 2 tables. One normal table, and another linked table (pointing to a network location)
Searching for solutions, I discovered the following:
- if I don't use linked tables, everything works fine (however, I have to use this linked table)
- even if I connect directly to the table in the network I receive the error. So, I'm pretty sure I don't have sufficient rights to read from this table.
I read that not the Admin user is opening the file, but actually a user called ASP.NET. This user doesn't have the correct rights to do this. However, I'm not sure if this is true.
