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well I recently did a msc in information systems, which included one module on c# prgramming and databases, at the end of the course I had to do a 3 month work placement, hence beginging my first proper project, this project continued after i finished my msc it is just in the final stages of compleation and this is the last part of the project, i have been thrown in at the deep end and had to learn alot on the job, with no expert help.
i've generally been fine with debugging, but am having trouble unterstanting exactly how the try and catch steps work.
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Fatbuddha2 wrote: but am having trouble unterstanting exactly how the try and catch steps work.
See if this helps[^]
led mike
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ok, i've read up on exception handling, and yes i see how catch woks, but i still don't see how i can find out which email is in the wrong format. so the error is caught but it could still be any of the addresses, how do i know how far the while loop has got?
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so you got an IT degree and worked for months now, but you fail to understand try-catch?
I strongly suggest you read up on exception handling and hurry applying it everywhere.
IMO it is the shortest route to creating reliable applications.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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Check each string as you load from the DB to ensure it a valid address (does not contain invalid chars and has an '@' symbol... I don't know if there are more requirements for e-mail addresses, but you can find these easily online).
Sounds like somebody's got a case of the Mondays
-Jeff
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i'm selecting all the email address in the db and using a while loop to send out the email.
i manually went through the email addresses today and they looked ok. ie @'s and .'s but know i don't know what to try and was woundering if these a way i can get the code to tell me which address is wrong
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I figured you are sending it to multiple recipients in one send. If you are sending to one recipient at a time, then do what the other responders suggested. Otherwise, you can find a regex for checking email here[^] (I did not check this, but it was the first result from google). Hope this helps,
Sounds like somebody's got a case of the Mondays
-Jeff
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I am, thanks for the help, using this idea i ran the emails in my database through regular expression validation and got back a list of the incorrectly formatted emails.
Thank you so much
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Exactlly
when u insert email address to databasem please valid with regular expression. so dont have any fear when u retrieve data from the Database to send email
this is good for u.
Cheers
RRave
MCTS,MCPD
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fellas i need my program to be MTATHREAD in my main method
but when i add the media player control in i get the following error
ActiveX control '6bf52a52-394a-11d3-b153-00c04f79faa6' cannot be instantiated because the current thread is not in a single-threaded apartment.
any body know how to get around it
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jimmy2shoes wrote: but when i add the media player control in i get the following error
ActiveX control '6bf52a52-394a-11d3-b153-00c04f79faa6' cannot be instantiated because the current thread is not in a single-threaded apartment.
Well, you don't have a choice there. You either set the STA or you don't use the Media Player control.
Why do you have to use MTA?? You can create threads yourself all you want without it...
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hi thanks for getting back to me friend
i have to MTA as i am using the Intel Mobile SDK to monitor Power and Network events and as far as there web site goes i have to use MTA in order for it to function correclty.
i have ran my program with STA and the events do not work
thanks
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In that case, you can try this. You have to keep the Main in your code STA or you lose ActiveX controls. Start a seperate thread, setting its Apartment to MTA before you actually Start the thread. All of your code using this library would have to be running under this thread in order to work (per Intel). I don't know if it'll work, and it might take a large rewrite of your code to find out.
Your best source of information on this problem is actually going to be Intel.
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Yes, things like that can work. We once did such things.
The way I understand it, you can choose the overall MTA/STA status, and then deviate from
it for each new thread you create.
There is one little caveat: for each thread you can set the appartment model only once,
but that should pose no problem.
PS: I don't recall how prefabricated threads (ThreadPool, BackgroundWorker, ...)
behave in this matter.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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trying to write a c# datagridview wrapper class, and i'm having problems setting my form object to the class dgv wrapper.
error: "Cannot implicitly convert type 'System.Windows.Forms.DataGridView' to 'test.Grid'. An explicit conversion exists (are you missing a cast?)"
form code:
breaks on:
"Grid i_grid_o;
i_grid_o = dataGridView3;
i_grid_o.UpdateGrid(i_grid_o);"
wrapper class code:
"using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
namespace test
{
class Grid : DataGridView
{
DataGridView i_grid_o = new DataGridView();
//ctor
public Grid()
{
}
public void UpdateGrid(DataGridView a_grid_o)
{
i_grid_o = a_grid_o;
MessageBox.Show(a_grid_o.ToString());
//DataGridView a_grid_o, a_table_o
//a_grid_o.Update(a_table_o);
}"
anyone can help, will greatly appreciate it!
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Member 3946582,
You just need to do: i_grid_o = (Grid)dataGridView3;
Also, on a side note, you don't need to create a DataGridView in your Grid class. You could change your code to:
private DataGridView _gridView
public Grid(DataGridView dataGridView)
{
_gridView = dataGridView;
}
Then, when ever you want to create a Grid object, just do:
Grid i_grid_o = new Grid(dataGridView3);
i_grid_o.UpdateGrid();
Regards,
Gareth.
modified on Friday, February 15, 2008 1:14 PM
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thanks! That darn casting! You guys are great..
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Hey all,
I have a simple listview question. When a row is clicked, I can get info from a particular column like this:
listView1.FocusedItem.SubItems[0].Text
But how can I get the column dynamically?
Thanks!
PHP and C# Developer for Magezine Publishing Ltd
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I don't have a lot of experience with ListView, but after a quick glance at the API, in your Click method, I think you can use the event args 'e' like:
int colIndex = e.Columns.Index();
I might be wrong though, like I said, never used it much.
He who makes a beast out of himself gets rid of the pain of being a man
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BenGriffiths wrote: But how can I get the column dynamically?
What does that mean? Get the column they clicked?
led mike
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Yep, i need to get the index of which ever one was clicked
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My suggestion any good? That was what I was assuming.
He who makes a beast out of himself gets rid of the pain of being a man
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I couldnt figure that way out :s lol, still learning 
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First generate the click method: Go into the ListView's events in the form design or if you've coded the ListView:
listView1.ColumnClick += new ColumnEventHandler(listView1_ColumnClicked);
Half way through writing that, Intellisense will say press tab to auto generate method.
Then inside the method, the code I previously wrote should do the job.
He who makes a beast out of himself gets rid of the pain of being a man
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Ah ok, I think I have figured it out now, thanks 
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