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5.5

progress bars with timer not working c#

Asked by flynny in C# Programming Language

hi all,

i've added a progress bar to a form. no i have a static class for handling all my sql login etc.

in the sql login method i add a time out of 24 seconds, now i want to show progress (rather than appering to hang) for my program logging in.
i have created a timer for handling the event, and it is working however it doesnt seem to be working in the seperate thread.

the code seems to hang and then after the time out accurs shoots up. am i doing somehting wrong?

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             private void Next_Button_Click(object sender, EventArgs e)
        {
            Progress_Bar.Visible = true;
            Progress_Bar.Minimum = 0;
            Progress_Bar.Maximum = 24;
            Progress_Bar.Step = 1;
            Progress_Bar.Value = 0;
            timer1.Enabled = true;
            
            //call the check server method to continue
            if (Test_Server())
            {
                NewPage2 form = new NewPage2();
                form.Show();
                close_dialog = true;
                this.Close();
            }
 
            Progress_Bar.Value = 24;
        }
 
the test_server method is basically just calling this method in my static class
 
      //Here is where I create my connection.
        private static SqlConnection createConn()
        {
            //Here you have your connection string you can edit it here.
            //need to check if we have a DSN or not.
            //also need to add username and password
            string mySqlConnectionString = buildConnString();
            
            //If you wish to use SQL security, well just make your own connection string...
            //I make sure I have declare what mySqlConnection stand for.
            if (mySqlConnection == null) { mySqlConnection = new SqlConnection(); };
 
            // Since i will be reusing the connection I will try this it the connection dose not exist.
            if (mySqlConnection.ConnectionString == string.Empty || mySqlConnection.ConnectionString == null)
            {
                // I use a try catch statement cuz I use 2 set of arguments to connect to the database
                try
                {
                    //First I try with a pool of 5-40 and a connection time out of 4 seconds. then I open the connection.
                    mySqlConnection.ConnectionString = "Min Pool Size=5;Max Pool Size=40;Connect Timeout=4;" + mySqlConnectionString + ";";
                    mySqlConnection.Open();
                }
                catch (Exception)
                {
                    try
                    {
                        //If it did not work i try not using the pool and I give it a 45 seconds timeout.
                        if (mySqlConnection.State != ConnectionState.Closed)
                        {
                            mySqlConnection.Close();
                        }
                        //changed the timeout from 40s to 20s as too long to wait.
                        mySqlConnection.ConnectionString = "Pooling=false;Connect Timeout=20;" + mySqlConnectionString + ";";
                        mySqlConnection.Open();
                    }
                    catch (Exception e)
                    {
                        CustomMessage customMessage = new CustomMessage();
 
                        //parse the exception to find out what went wrong and relay it back.
                        if (e.Message.Contains("Login failed for user"))
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("Login"));
                        else if(e.Message.Contains("network-related"))
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("DSN"));
                        else
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("Unknown"));
                    }
                }
                return mySqlConnection;
            }
            //Here if the connection exsist and is open i try this.
            if (mySqlConnection.State != ConnectionState.Open)
            {
                try
                {
                    mySqlConnection.ConnectionString = "Min Pool Size=5;Max Pool Size=40;Connect Timeout=4;" + mySqlConnectionString + ";";
                    mySqlConnection.Open();
                }
                catch (Exception)
                {
                    try
                    {
                        if (mySqlConnection.State != ConnectionState.Closed)
                        {
                            mySqlConnection.Close();
                        }
                        mySqlConnection.ConnectionString = "Pooling=false;Connect Timeout=45;" + mySqlConnectionString + ";";
                        mySqlConnection.Open();
                    }
                    catch (Exception e)
                    {
                        CustomMessage customMessage = new CustomMessage();
 
                        //parse the exception to find out what went wrong and relay it back.
                        if (e.Message.Contains("Login failed for user"))
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("Login"));
                        else if (e.Message.Contains("network-related"))
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("DSN"));
                        else
                            throw new CustomException.CustomException(SeverityLevel.Fatal, GlobalVars.Debuglog, e.InnerException, customMessage.GetString("Unknown"));
                    }
                }
            }
            return mySqlConnection;
        }
           
         

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progress bars with timer not working c#

Asked by flynny in C# Programming Language

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