i am using my sql database. what type of data connection improve the performance.oledb connection or odbc connection ? what is the theory of these architectures?
View 8 Repliesi need some detail about ole and odbc.. what diffrence between ole and odbc
View 4 RepliesThe attached code, the oledb part, is giving me a blank web page saying it cant connect on my local dev server. I have another app with the same code, in fact I copied it and changed the db names. The one I copied from works fine.
[Code]....
i am trying to create connection using OLEDB connection in my app. but i am not able to create the connection as in datasource i want to use Server.mappath, but cudn't find the right method to use it. i am trying to make connection with Access database file. following is code i have tried:
string path = Server.MapPath("~/uploadaccess/Production.mdb");
string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("~/uploadaccess/Production.mdb")&";";
and also
OleDbConnection myConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & path&";");
and tried this
OleDbConnection myConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("~/uploadaccess/Production.mdb"));
and this is the error i am getting:
Operator '&' cannot be applied to operands of type 'string' and 'string'
I'm using an ODBC connection to connect a SQL 2005 database to my ASP.NET app in Visual Web Developer Express. I'm finding that the expected functionality that tutorials review does not work for ODBC connected databases the same way as it does for SQL databases created in the Web Developer. For example, I can't use stored procedures because the option to create one is disabled in the Web Developer, and if I create the stored procedure in SQL Server Management Studio Express, it doesn't show up in Web Developer because Web Developer only finds the system stored procedures, not the user-defined ones. I've seen other cases as well where database management options in Web Developer don't work with ODBC databases.
Am I missing something in my setup, or is there an inherent limitation with ODBC connected databases? Or, is this a limitation with using the Express versions of these development tools?
my webserver is in the DMZ. The Database in the intranet. For connection from webserver to database the following entry is made in the odbc connection "TCPIP BCAST=NO;HOST=Intranet.Firma.local,Intranet_Spiegel.Firma.local,Intranet_Arbiter.Firma.local;PORT=2639}"
how to get this options in the connection strings working, or how i must modify the entitiy framework connection string to use the odbc entry?
<add name="KA_Entities" connectionString="metadata=res://*/Models.KA_Model.csdl|res://*/Models.KA_Model.ssdl|res://*/Models.KA_Model.msl;provider=iAnywhere.Data.SQLAnywhere;provider connection string="UserID=user;Password=password;DataSourceName=Databasename""
providerName="System.Data.EntityClient" />
<add name="KAPortal" connectionString="UserID=user;Password=password;DataSourceName=Databasename" providerName="iAnywhere.Data.SQLAnywhere" />
I tried to use odbcfor the entity framework, but the Wizard always add the right .NET Provider and not the odbc
I am developing one web application using MS Access database using oledb connection.Previously i checked the same application is works well in the same machine.Now Today i checked they provide "Unspecified Error". And also Provide the following Exception:
System.Data.OleDb.OleDbException: Unspecified errorat System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.OleDb.OleDbConnection.Open() at clsOledbClass.opencon() in c:inetpubwwwrootcheckNPCApp_CodeclsOledbClass.cs:line 64
I am using the following connection string for connecting database:
[Code]....
I'm busy working on an ASP.NET Web Application (3.5) and can't seem to connect to a MySQL DB. I first created the entire application using a WinForms template and everything works 100%, but as soon as I move the exact same code to the Web Application, I can't connect anymore. Here's the code:
Code:
public class DBC {
OdbcConnection connection;
public bool CreateConnection() {
try {
string connFormat = "Driver={MySQL ODBC 5.1 Driver};Server=[SERVER];Database=[DBNAME];User=[UID];Password=[PWD];";
connFormat = connFormat.Replace("[SERVER]", Properties.Settings.Default.DBServer);
[Code] .....
As soon as I try to create the new OdbcConnection instance, I get the error:
Code: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
As noted this works in a WinForms app, and even more strange is that I don't even specify a DSN name...
All I could find from reading through forums all over the internet is suggestions of downgrading the MySQL ODBC driver version, which I'd really rather not...
I have installed MySQL and set up an ODBC driver to point to a database in MySQL. In ASP.NET I have defined a connection string to attach to this MySQL dtabase.
<asp:SqlDataSource
ID="SqlDataSource2"
runat="server"
ConnectionString="<%$
ConnectionStrings:MySQLConnectionString %>"
SelectCommand="SELECT
* FROM [categories]"
ProviderName="<%$
ConnectionStrings:MySQLConnectionString.ProviderName %>">
</asp:SqlDataSource>
However in ASP.NET connection wizard, although the tables are shown, no colums are shown and when I attempt to run the page which uses this datasource I get an error message about a syntax error near page 1 at 'Select * from [categories]'. how to use an ODBC (MySQL) datasource in ASP.NET?
I'm thinking the problem here is with my SQL Syntax, but I'm not sure and need a fresh pair of eyes to check it out. This is the code I'm using to connect to and then insert into the DB:
OdbcConnection datConn = CreateDataConn();
datConn.Open();
OdbcCommand comm = new OdbcCommand();
comm.CommandText = "INSERT INTO userdata (key, secretkey, uid) VALUES ('" + token + "', '" + secret + "', '" + twitterid + "');";
comm.Connection = datConn;
comm.ExecuteNonQuery();
datConn.Close();
And here is the CreatDataConn() method:
private OdbcConnection CreateDataConn()
{
OdbcConnection dbConn = new OdbcConnection();
dbConn.ConnectionString = "Dsn=MySQL;database=twittertest;option=0;port=0;server=localhost;uid=root;pass=Red!4jedi";
return dbConn;
}
I created a DSN to the database, which is hosted on my machine. When I run the application I get this error:
ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.51-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key, secretkey, uid) VALUES ('127090765-i3aZl71LPSVUCPZs9kHSYeBli0vWpbq0BaM1roYC' at line 1
But for the life of me I can't figure out what's wrong with my syntax...It's prolly something simple, but again, I need a pair of fresh eyes to look at this.
I m new in asp.net c#.
How to declare a oledbconnection object in asp.net c#.
Means should it be declared as a static or public?
ex:- suppose the object is OleDbConnection con;
Whether it should be static OleDbConnection con;
Or public OleDbConnection con;
I need to set connection timeout in oledb connection string like
stringA= "Provider=SQLOLEDB.1;Persist Security Info=False;User
ID=sa;PWD=password;Initial Catalog=DB;Data Source=127.0.0.1;Connect
Timeout=30" [code]....
I have an application that takes a long time to open odbc connections (like 20 sec) also takes forever using arcmap and arcsde but when I try the connection on the odbc data source administrator, it tests it really fast. Does anyone have any idea of what my be causing this? btw the application works fine in another computer with another database
View 2 RepliesHow to put an OleDB Connection String in Web.Config I wrote the following code but getting error
Code:
<appSettings>
<add key="ConnectionString"
value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("~/App_Data/AMS.MDB")" />
</appSettings>
Getting error while concatenating a string Data Source=" & Server.MapPath
How can i read CSV file without using Oledb connection.
View 1 RepliesI am currently making a website on asp.net and i am creating methods using TableAdapter. I am connected to MySql using an ODBC connection. The select * from department will work perfectly for me but when trying to use parameters i am given an error message on the wizard. select * from department where name = @name gives me the error: Error in where clause near '@' unable to parse query text. also tried select * from department where name = ?: this gives me the error: No mapping exists from dbTypeObject to a known Odbc type.
View 3 RepliesI have an ASP.net web service application that connects to a Progress OpenEdge 10.1B database via ODBC. My development machine is XP Pro and runs everything fine. I am now moving the application into a test environment. The test machine is also XP Pro. It matches the dev machine except for that the Progress Server is not running locally. I am able to run the project out of VS2010 and the web service makes the ODBC connection and returns the data without error. When I deploy the application to IIS (which is running locally) the ODBC connection fails with this error: *System.Data.Odbc.OdbcException: ERROR [IM003] Specified driver could not be loaded due to system error 126 (OpenEdge 10.1B driver).*
View 1 RepliesI have a problem whenever i run my code i get the following error ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.46-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' ('b'), ('Manager'), ('c'), ('d'), ('e')' at line 1 my code works with connector/net but my host does not have it installed so i've had to change my code to odbc which they do have, i have found out the syntax is different and changed my code accordingly my code is as follows
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We're converting a Classic ASP site to an ASP.NET site. One function was to upload a 'template' of data in CSV format for importing into the database. There were several different record types in there (the first field always indentifies the type of data).
The task was to get the CSV into a DataTable so it could be validated (new project is to have MUCH better validation rules)
The code seemed pretty straightforward - watered down (taking out comments, Try/Catch, etc) it is as follows:
Dim da As New System.Data.OleDb.OleDbDataAdapter
Dim cn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDirectory & ";" & "Extended Properties=""Text;HDR=No;FMT=Delimited;""")
Dim cd As New System.Data.OleDb.OleDbCommand("SELECT * FROM " & strCSVFilename, cn)
cn.Open()
da.SelectCommand = cd
da.Fill(dtData)
The DataTable (dtData) is populated, but only starting with the second line of the CSV file DESPITE the fact that "HDR=No" is in the connection string. What am I missing here?
I am Importing an excel file using oledb connection in asp.net.
but it is not working on server.
now i want to read excel file without interop.
How can i do it.
I am running:
Windows Server 2008
MS SQL Server 2008
MS SQL Server Native Client 2008
I need to create an ODBC Data Name Source. The instructions on microsoft site are not explicit enough.
In my windows application, i am listing the System DSN's configured on the remote machine in a combobox. Once i select the DSN and click on Connect button, i should be able to connect to the remote database. I am trying to open the connection to the database using ODBC but am getting the below error.
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.
Below is the code sample
string conn = "Provider=MSDASQL;Remote Server=http://BLR1WKD010; Remote Provider=MSDASQL;DSN=" + clsODBC.pDBName + ";UID=" + txtUsername.Text + ";PWD=" + txtPassword.Text;
OdbcConnection odbcConn = new OdbcConnection(conn);
odbcConn.Open();
[Code]....
The code:
[Code]....
[Code]....
I getting the error:ERROR [42000] [Microsoft][ODBC SQL Server Driver][SQL Server]Incorrect syntax near
'@P1'.
This is the code i am used for fetching data from DB2 server (windows based server)In the same server tables created by me is working fine...eg:
oCommand.CommandText = "SELECT * from DEB.TESTUSER";
below is a table created by another application but the data reader is not working with this query ( table in the same server with same DB as above)
oCommand.CommandText = "SELECT * FROM DEB.RULE_GROUP";
If any permission or any other things i want to check .....i mean security related.....odbcadapter is also working fine....pls help regarding the datareader.....below is the complete code......
private void btnSelectRecord_Click(object sender, EventArgs e)
{
OdbcConnection oConnection = null;
[code]...
[Code]....
I can check whether username exists or not successfully but not for email. any ideas why it isn't working? Error message was that i did not close my connection. using System;