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connect to access databae without dsn

I am using the following connection string to connect with my access database from vb.net application, but not get connected.
Driver={Microsoft Access Driver (*.mdb)}; Dbq=D:\Projects\tempdb.mdb
It shows me following error
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
My code is below:
Dim odbcConn As OdbcConnection = New OdbcConnection(m_connectionString)
'' Build thr odbc Dataadapter
Dim odbcAdpt As OdbcDataAdapter = New OdbcDataAdapter(QueryToExecute, odbcConn)
odbcAdpt.SelectCommand.CommandType = CommandType.Text

I had connection problems.
My project was not connecting to database because there were no default driver.
I have solved this problem.
If you are using 64-bit OS you must use 64-bit MS office. similarly if you are using 32-bit OS you must need 32-bit MS office.
Be sure that you have all application of same number of bits.
Hopefully it will solve your problem.

Cause Of SQL Connection Error

Within my ASP.NET C# WebForms app I am attempting to connect to my SQL Database.
Upon connection I get the error:
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
I've attempted to google what this error means but the results do not clearly explain whats wrong. Can you tell me what exactly is wrong (its not finding the database file, it found the file but the database file is incorrect version, etc.)?
These are the steps I have performed:
Create a local database using VS2013. The file is located in 'MyProjectPath\App_Data\Pages.mdf'
The database is populated with a table and rows
I have connected to the server by 'Server Explorer->Connect To Server->Type in my computer username'. No errors appear
In the Server Explorer I have tested my connection to the database and it succeeded.
Connection is 'Microsoft SQL Server Database File (SqlClient)'
I have copied the 'ConnectionString' to web.config. One important thing is that the string contains quotation marks and I have to remove these.
Do I need to start an external application like SQL Server Management Studio or something?
Connection String:
Data Source=(LocalDB)\v11.0;AttachDbFilename="C:\VERY_LONG_PATH_THAT_HAS_SPACES\App_Data\Pages.mdf";Integrated Security=True
I remove the quotations:
<connectionStrings>
<add name="MySQLConnStr" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\VERY_LONG_PATH_THAT_HAS_SPACES\App_Data\Pages.mdf;Integrated Security=True"/>
</connectionStrings>
// My simple connection code where the runtime error occurs
try
{
using (OdbcConnection connection = new OdbcConnection(ConfigurationManager.ConnectionStrings["MySQLConnStr"].ConnectionString))
{
// do stuff
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}

Hi to make ODBC connection you need to have driver installed. You can make sql connection and this should work..
// Change your simple connection code to
try
{
SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["MySQLConnStr"].ConnectionString);
connection.open();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}

Try one by one below three solutions, it will help you to solve your problem.
You need to configure DSN in Administration Tools => ODBC, When install driver choose for all users instead current user
Try to look on your server for the ODBC Data Source Administrator that can be found in Control Panel --> Administrative Tools --> Data Sources (ODBC). (On 64 bit Windows systems, you'll have to explicitly call c:\windows\syswow64\odbcad32.exe ) and add the driver to the System DSN tab.
If the ODBC driver was not 64 bit, Try to compile your application as an x86 process and it will work.

Unable to Access Embedded Firebird Database Server with .Net Client

Unable to Access Embedded Firebird Database Server with .Net Client
I aim to develop a program which uses the Embedded Firebird Server but face errors when trying to make a connection using the .Net client. I have followed the advice from multiple threads on making it work, but I can’t figure it out. I’ve tried changing the connection string and files but keep getting the same errors.
Here is a detailed explanation of my research and everything I have tried so far:
How to connect and use Firebird db embedded server with Visual C# 2010
I download the files specified in the links, followed the steps and ran the code and got the same error message as did the original poster:
FirebirdSql.Data.FirebirdClient.FbException
Message=Unable to complete network request to host "127.0.0.1".
Using "localhost" in place of the IP generates the same error.
The accepted answer is to make sure all the .dll and config files are copied to my project files (directory with the code ) and the output directory (bin/debug), which I have done. I copied over every file in the zip folder. Additionally #Robin Van Persi states to not use the “compact .Net data provider”, how do I know if I am using this? I downloaded the file from the link in the question.
Another answer contributed by #PlageMan is to add ServerType=1; to the connection string and remove the DataSource and Port attributes which produces these errors:
FbConnection con = new FbConnection("User=SYSDBA;Password=masterkey;Database=TEST.FDB;Dialect=3;Charset=UTF8;ServerType=1;");
System.NotSupportedException Message=Specified server type is not correct.
FbConnection con = new FbConnection("User=SYSDBA;Password=masterkey;Database=TEST.FDB;Dialect=3;Charset=UTF8;");
System.ArgumentException
Message=An invalid connection string argument has been supplied or a required connection string argument has not been supplied.
The last answer by #Toastgeraet adds to rename the fbembed.dll to either fbclient.dll or gds32.dll. I’ve tried it all three ways, no change. In fact http://www.firebirdsql.org/en/firebird-net-provider-faq/ says fbembded.dll but that didn’t work either.
How to solve connection error in c# while using firebird embeded database?
Has the same advice on renaming the fbembed.dll to fbclient.dll which didn’t work for the original poster either.
The accepted answer ServerType=1 in the connection string, but a comment under #cincura.net answer gave me a new possibility to investigate; processor architecture. Unfortunately, switching between 64bt and 32bit versions didn’t make any difference.
I thought switching to the 32bit version might have been the answer since I'm using Visual Studios Express.
Error in using Embeded Firebird
The last comment in this thread is another person saying that changing to 32bit didn’t solve the problem either.
Trying to use the firebird embedded server - Specified server type is not correct
I went back to looking up information on the ServerType because I have seen it as 1 and 0 and found this post. #Nigel answer is to update to the latest version of the .Net provider. Unfortunately, I can’t figure out how to use the newest version on the Firebird website (4.5.1.0) because it lacks FirebirdSql namespace from the examples. Additionally, Visual Studios gives me some warning about the wrong version of .Net being targeted when I import it.
What am I doing wrong? Do I need to use a different connection string or new version of Firebird/ .Net provider? Am I missing something else?
I realize that this question may be considered a duplicate, but none of the answers I have found so far have solved my issue. Additionally, the previous StackOverflow Q/A’s which I have cited above are all years old so I’m hoping someone may have new information to share.

I just created a very basic program to test Firebird embedded from C#. You need to add the latest FirebirdSql.Data.FirebirdClient nuget package (4.5.1.0), and drop the entire contents of a Firebird embedded zip kit into the same folder as the .exe.
Note that you need to match the bitness of the application:
x86 (32 bit): Firebird-2.5.3.26778-0_Win32_embed.zip
x64 (64 bit): Firebird-2.5.3.26778-0_x64_embed.zip
AnyCPU seems to be rather tricky. When I compiled the executable as AnyCPU and ran it on a 64 bit machine, it gave a BadImageFormatException when combined with Firebird Embedded 64 bit, but worked with Firebird Embedded 32 bit; which is the opposite of what I expected.
class Program
{
private const string DefaultDatabase = #"D:\data\db\employee.fdb";
static void Main(string[] args)
{
string database = args.Length > 0 ? args[0] : DefaultDatabase;
var test = new TestEmbedded(database);
test.RunTestQuery();
Console.ReadLine();
}
}
class TestEmbedded
{
private readonly string connectionString;
public TestEmbedded(string database)
{
var connectionStringBuilder = new FbConnectionStringBuilder();
connectionStringBuilder.Database = database;
connectionStringBuilder.ServerType = FbServerType.Embedded;
connectionStringBuilder.UserID = "sysdba";
connectionString = connectionStringBuilder.ToString();
Console.WriteLine(connectionString);
}
internal void RunTestQuery()
{
using (var connection = new FbConnection(connectionString))
using (var command = new FbCommand("select 'success' from RDB$DATABASE", connection))
{
Console.WriteLine("Connecting...");
if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
}
Console.WriteLine("Executing query");
using (var reader = command.ExecuteReader())
{
if (reader.Read())
{
Console.WriteLine(reader.GetString(0));
}
}
}
}
}
The connection string generated by this program is:
initial catalog=D:\data\db\employee.fdb;server type=Embedded;user id=sysdba
This seems to be the minimum required to connect. Note that although Firebird embedded on windows doesn't perform any authentication, providing user id is required, otherwise the trusted authentication is triggered which doesn't work with Firebird embedded.

The only way that works for me: setting the client path in the connection string.
<add name="MyEmbeddedDb" connectionString="user=SYSDBA;Password=masterkey;Database=|DataDirectory|MyDb.fdb;DataSource=localhost;Port=3050;Dialect=3;Charset=NONE;ServerType=1;client library=C:\firebird\fbembed.dll" providerName="FirebirdSql.Data.FirebirdClient" />
C:\Firebird is a folder I've extracted the entire downloaded zip file (Firebird-2.5.4.26856-0_Win32_embed.zip)

Error in connecting OLEDB and ODBC databases in C#?

While trying to connect the OLEDB databases with .NET Framework, I get a syntax error in the INSERT INTO statement., when running in a 64-bit Windows version.
The same code is running perfectly fine in Windows 32-bit.
I read on the Windows site that Windows does not provide support for 64-bit models.
Is there a work around to this problem?
string vSrc = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\abhi.mdb";
OleDbConnection vconn = new OleDbConnection(vSrc);
vconn.Open();
string vSname = TextBox1.Text;
string vQuery = "insert into Table(Sname)values('"+vSname+"') ";
OleDbCommand vcomm = new OleDbCommand(vQuery, vconn);
vcomm.ExecuteNonQuery();
Label1.Text = "record save successfully";
vconn.Close();

Apparently my hunch was correct. Microsoft.Jet.OLEDB.4.0 provider is not 64-bit compatible:
http://social.technet.microsoft.com/Forums/en/w7itproappcompat/thread/14041b74-6ca6-49be-af90-d8ff3f962724

you have error regarding 64 bit access driver you should look at
Windows 7 64 bit odbc drivers for Ms Access Missing

ODBC ConnectionString

I have written a program in C# to pull some data using OdbcConnection :
using System.Data.Odbc;
......
OdbcConnection OdbcConn =
new OdbcConnection(Properties.Settings.Default.ConnectionString);
OdbcCommand cmd = new OdbcCommand();
//open connection
if (OdbcConn.State != ConnectionState.Open)
{
OdbcConn.Open();
}
In my settings file, I have this ConnectionString:
Dsn=****;uid=userID;pwd=password
However I cannot establish a connection. I have an iseries access driver from IBM corp installed, but if I try MS access then I am able to connect. Any suggestions?

When in doubt (and it involves connections strings): http://www.connectionstrings.com/

On a Windows 64 bit machine, make sure you check if your C# code is compiled in x86 (32-bit), x64, or "Any CPU". Note that if you compile as "Any CPU," it'll choose x64 bit drivers by default.
The 32-bit drivers can be found at C:\windows\SysWOW64\odbcad32.exe. The 32-bit drivers can be found at C:\windows\system32\odbcad32.exe.
First, make sure you verify your connection works with the ODBC Data Source Administrator using the paths I provided earlier. I.e. make a DSN and test it as Turbot suggested. Once you verified this connection works, your connection string can either use the DSN you just created or you can use a DSN free connection string.
For a quick reference, here is a sample of a DSN free connection string using a ODBC driver:
Driver={Progress OpenEdge 11.3 Driver};HOST=wfdscr11.wf.local;Port=1234;DB=MyDatabaseName;UID=John;PWD=Doe
In this example, I had to connect to a Progress database from my C# code and this is the connection string I used without having to specify a DSN. You can see below that the name of the driver is "Progress OpenEdge 11.3 Driver."

I always like to verify the connection using Data source(ODBC) in control panel (assume you are in window environment). Make sure you see the drive available in your ODBC selection and follow the steps to test the connectivity.
as also mentioned above the connections strings website would give you idea what properties and format on which particular driver connectivity