ASP.NET

9-Nov-09 18:30

Hi All,

I want to connect Asp.net application with the my sql 5.0.please help me which driver need to be installed.

when i m tring to open the connection this is giving error

ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

and my connection string is

string ConnStr = "Driver={MySQL ODBC 5.0 Driver};Server=localhost;Database=testwithdotnet;uid=root;pwd=password;Port=3306;Option=3";

and i installed this MySQL Connector Net 5.1.7 diver

Thanks and regards,

Amit Patel

Christian Graus9-Nov-09 18:46

9-Nov-09 18:46

I've never seen the driver specified in the connection string, I've just installed the right classes to deal with the data source, and used them.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Gamzun9-Nov-09 20:06

Gamzun

9-Nov-09 20:06

Try this An ASP.NET Application Using a MySQL Database[^]

Please don't forget to mark 'Good Answer', if you find it really a good one!

Kashif

found solution

Amit Patel19859-Nov-09 20:21

9-Nov-09 20:21

Hi All,

Thanks all . I have solved this problem

using following way

MySqlConnection con = new MySqlConnection(("server=127.0.0.1; user id=root; password=password; database=testwithdotnet; pooling=false;"));

Thanks and regards,

Amit Patel

modified on Tuesday, November 10, 2009 2:57 AM

Re: found solution

Christian Graus9-Nov-09 21:09

9-Nov-09 21:09

Well, that's what we both told you to do, so....

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

[Message Deleted]

Amit Patel19859-Nov-09 18:30

9-Nov-09 18:30

[Message Deleted]

N a v a n e e t h9-Nov-09 18:31

N a v a n e e t h

9-Nov-09 18:31

Use the connector[^] provided by MySql folks.

Best wishes,
Navaneeth

Amit Patel19859-Nov-09 18:46

9-Nov-09 18:46

hi ,

i m using this

string ConnStr = "Driver={MySQL ODBC 6.1.2 Driver};Server=localhost;Database=testwithdotnet;uid=root;pwd=password;Port=3306;Option=3";

OdbcConnection odbcConnection = new OdbcConnection(ConnStr);
OdbcCommand cmd = new OdbcCommand("SELECT * FROM amit", odbcConnection);
odbcConnection.Open();

but this is giving following error.

ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

thanks and regards,
amit patel

Christian Graus9-Nov-09 18:47

Async updates to DB without BackgroundWorker

9-Nov-09 18:47

Amit Patel1985 wrote:
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

What makes you think this error is wrong ? What leads you to believe that the connection string is pointing to a valid driver ? Have you installed/configured one for ODBC ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

student_rhr9-Nov-09 12:40

student_rhr

9-Nov-09 12:40

Hi,

In my ASP.NET application, I have a situation where I am doing a lot of computing and database reads/inserts/updates.
I needed to gather statistics on the processing records. This info is actually displayed on another webpage. Processing routine looks something like this:

public void Process()
{
    int recordCount = 0;
    ProgressHelper.Start();
    while(processing)    
    {
        //Actual processing logic
        recordCount++;

        //Every 10 processed records, update the progress table
        if(recordCount % 10 == 0)
        {
           ProgressHelper.UpdateProcessedRecordCount(recordCount); 
        }
    }
    ProgressHelper.End();
}

These database calls to update the progress add additional delay.

I was wondering if there is a way to actually execute all the ProgressHelper stuff asynchronously (without using background worker)? (perhaps delegates ... but are delegates really async?)

Re: Async updates to DB without BackgroundWorker

N a v a n e e t h9-Nov-09 15:32

N a v a n e e t h

9-Nov-09 15:32

What is ProgressHelper?

BackgroundWorker is a class designed for windows applications not web applications. So using it in a web application is not a good idea. If I understood your question, you need to do a time consuming task on background and show a progress bar on another ASP.NET page, correct?

If yes, follow the below steps.

From the first page, start a thread (or better if you can use ThreadPool) and run the Process() method on that.
This method should update the progress to a session variable say Session["progress"]
Once the thread started, redirect to the page where progress will be displayed
Use AJAX and poll the Session["progress"] value and show it on the page. For creating progress bar, you can use HTML DIV tag with a background color.

You need to pass HttpContext.Current to the Process() method because it is thread specific and a worker thread won't have access to it. Use this context to access the session.

Hope that helps Smile | :)

Best wishes,
Navaneeth

Re: Async updates to DB without BackgroundWorker

student_rhr10-Nov-09 5:10

student_rhr

10-Nov-09 5:10

Thanks Navaneeth. ProgressHelper is my internal DAL responsible for udpating the progress table (sorry I should have explained). I agree with you that BackgroundWorker is a bad idea that's why I was wondering if there might be a better way to accomplish this.

Also, what are your thoughts about Async Delegates? Have you seen any adverse effects of using them in ASP.NET?

Appreciate your hlep!

Re: Async updates to DB without BackgroundWorker

N a v a n e e t h10-Nov-09 14:41

N a v a n e e t h

10-Nov-09 14:41

student_rhr wrote:
I agree with you that BackgroundWorker is a bad idea that's why I was wondering if there might be a better way to accomplish this.

See the point 1 in my first reply.

student_rhr wrote:
Also, what are your thoughts about Async Delegates? Have you seen any adverse effects of using them in ASP.NET?

Asynchronous pattern will make your code unnecessarily complicated. So I'd stay away from it unless there is a strong need for using it. As I said, work with Thread or ThreadPool directly.

Best wishes,
Navaneeth

how to connect to the pop3 server from web page

amalatsliit9-Nov-09 11:45

amalatsliit

9-Nov-09 11:45

Hi,
I need to develope web site which connect to the pop3 mail server and populate all emails in a grid.
so after user can select emails from grid and can delete unnecessary mails through grid.

i have search lot of samples most of them are windows based.does any body know or can direct me to correct path.

i'm using .net 3.5 with sql server 2008.

thankx

Re: how to connect to the pop3 server from web page

Christian Graus9-Nov-09 11:51

Re: how to connect to the pop3 server from web page

9-Nov-09 11:51

It makes no difference. your web page, on postback, can use the same code to check mail and populate the page with the results.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

amalatsliit9-Nov-09 12:18

amalatsliit

9-Nov-09 12:18

can any u provide few examples...

Re: how to connect to the pop3 server from web page

Christian Graus9-Nov-09 14:49