Getting type? - C# Discussion Boards

tamir90116-Aug-09 9:38

tamir901

16-Aug-09 9:38

I try to do this:

void tabControl1_GotFocus(object sender, EventArgs e)
        {

            foreach (TabPage item in tabControl1.TabPages)
            {
                if (item.Focus())
                {
                    for (int i = 0; i < listBoxUsers.ListBoxControl.Items.Count; i++)
                    {
                        if (item.Text==listBoxUsers.ListBoxControl.Items[i].ToString())
                        {
                            listBoxUsers.ListBoxControl.SelectedItem = item.Text;
                        }
                    }
                }
            }
        }

But it dosen't work so good,
can i improve it?

Saksida Bojan16-Aug-09 10:57

Saksida Bojan

16-Aug-09 10:57

I woud try something this: And i am sorry, i deleted my previous answer because i didn't read correctly

void tabControl1_Selected(object sender, TabControlEventArgs e)
{
listBoxUsers.ListBoxControl.SelectedItem = tabControl1.SelectedTab.Name;     
}

Luc Pattyn16-Aug-09 11:34

Luc Pattyn

16-Aug-09 11:34

Hi,

IMO you may have to put such code inside a tabPage_GotFocus() handler for each of the tab pages.
Not sure the tabControl gets a GotFocus event when switching tab pages.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Send input to CMD from WINFORM

DdoubleD16-Aug-09 15:32

DdoubleD

16-Aug-09 15:32

Create one listbox control that is shown on all pages. Simple and each page will reflect the same ListBox list and selected item.

Haim Nachum16-Aug-09 6:20

Haim Nachum

16-Aug-09 6:20

Hi.

I have a winform that creates a process(cmd) and redirects its inputstream and outputstream to streamwriter and streamreader.

im able to write a command to that process(dir for example) and get the output and display it on textbox.
however, it seems that after i write to the inputstream i have to close it , only if i close the stream the command that ive sended is executed.

i want to be able to write more command to that stream and keep it open.

using the "flush" method on the streamwriter dosent seems to work.

how can i accomplish that task?

Re: Send input to CMD from WINFORM

riced16-Aug-09 6:58

riced

16-Aug-09 6:58

Does your command end with CR+LF?
It's just a guess but I think you need to send the equivalent of pressing Enter at a command prompt (i.e. in Cmd window).

Regards
David R
---------------------------------------------------------------
"Every program eventually becomes rococo, and then rubble." - Alan Perlis

Re: Send input to CMD from WINFORM

Hristo-Bojilov16-Aug-09 7:33

Hristo-Bojilov

16-Aug-09 7:33

Your app has a lot of problems with the console because console window doesn't belong to the caller process.If you want be able to read or write to console from Win forms in the same way like console application you should call AllocConsole or AttachConsole native functions to create or assign console window that belong to your windows forms app,not just to external process.To close current process console window you should call FreeConsole function.See some sample code here.

Life is a stage and we are all actors!

Getting type?

Matt Cavanagh16-Aug-09 5:50

Matt Cavanagh

16-Aug-09 5:50

So i posted a question the other day about dynamically loading dll components. And it works great if I know the type like this(whatever.whatever):

Assembly asm = Assembly.LoadFrom(openFileDialog1.FileName);
Type myType = asm.GetType("whatever.whatever);
UserControl uc = (UserControl)Activator.CreateInstance(myType);
uc.Name = "uc";
this.Controls.Add(uc);

But now how would I do this without knowing the type before?

Thanks Smile | :)

Strive to be humble enough to take advice, and confident enough to do something about it.

Saksida Bojan16-Aug-09 6:03

Saksida Bojan

16-Aug-09 6:03

roguemat wrote:
But now how would I do this without knowing the type before?

asm.GetTypes()[^]

Matt Cavanagh16-Aug-09 8:28

Matt Cavanagh

16-Aug-09 8:28

Shot

I had that but was being silly. Working now tho Smile | :)

Strive to be humble enough to take advice, and confident enough to do something about it.

DdoubleD16-Aug-09 18:01

DdoubleD

16-Aug-09 18:01

Why would you be trying to add a control of a type that is unknown to you? In other words, if you don't know what "whatever.whatever" control exists in the assembly, why would you expect it to be there?

urgent anyone can save me....

Matt Cavanagh16-Aug-09 19:04

Matt Cavanagh

16-Aug-09 19:04

Well im using a whole lot of different components ive made and its a real hack having to change it every time, or pre-code the possibilities.

Strive to be humble enough to take advice, and confident enough to do something about it.

Member 444291616-Aug-09 4:21

Member 4442916

16-Aug-09 4:21

i'm doing an mini project which 1. Member registration.
1. Credit checking.
- After they have made the payment through online banking, ATM or bank-in,
the credit will be updated. Once they have upload an advertisement banner,
then the credit will be deducted according to the charges rate.
2. Banner posting.
- Allow the user to upload the banner according to the size specify by the
TARC STREET. Calculate the charges needed for each post.

i done banner part but i hv no idea to code credit checking...can 1 can help me..thanks

Saksida Bojan16-Aug-09 5:54

Saksida Bojan

16-Aug-09 5:54

Credit Card Validator control for ASP.NET[^]

This links only calcultes if info is correct.

But if you want to prevent fraud then consider external company that specialize in: (In The link is only one of them)
http://www.authorize.net/[^]

Not Active16-Aug-09 6:49

Not Active

16-Aug-09 6:49

It may be urgent to you, but not to everyone else here. Don't be rude.

only two letters away from being an asset

PIEBALDconsult16-Aug-09 9:03

PIEBALDconsult

16-Aug-09 9:03

Indeed, "urgent" and "high importance" generally refer only to the sender, not to the receiver.

Pete O'Hanlon16-Aug-09 9:58

Pete O'Hanlon

16-Aug-09 9:58

The title of your post makes it sound like you're stuck on a ledge, 12 floors up and the buildings on fire. I rather suspect that your problem isn't as urgent as that.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

how to dataset.Update

sureyyan16-Aug-09 3:03

sureyyan

16-Aug-09 3:03

Hi all,

I'm new in c# and sort of confused in offline data handling. I fill my dataset with sql commanmd which is a joined selection (e.g select a.name,b.age,c.deprt_name from table1 a,table2 b,table3 c where ................) and that is how I fill dataset and assign the datasource of datagridview. When I delete,insert and update I only use table2.

How can I manage dataadapter,commandbuilder etc. and let dataadapter automatically do all these database operations.

Thanks in advance

snky

Mycroft Holmes16-Aug-09 3:16

Mycroft Holmes

16-Aug-09 3:16

sureyyan wrote:
and let dataadapter automatically do all these database

Theres you first mistake, don't rely on the data adapter to do anything automatically, you are the programmer, understand what your program is doing, take control of your data and its manipulation. The biggest problem I can see here is new programmers relying on the MS wizards to do the work they should be doing with a data access layer (DAL). Do some research into DAL, stored procedures and parameterised queries, you will be a better developer for it!

Never underestimate the power of human stupidity
RAH

sureyyan16-Aug-09 4:21

sureyyan

16-Aug-09 4:21

Keep your advises and assumptions to yourself.
Use your time for something constructive and behave yourself.

Pete O'Hanlon16-Aug-09 9:53

Pete O'Hanlon

16-Aug-09 9:53

That's a bit of an arsey attitude you've got going on there - a newbie and obnoxious; that's an attractive package you've got going there bubba. You were given good advice, but you wilfully chose to ignore it and attack the person giving it - perhaps you need to step back for a moment, and think about the advice you've been given and consider that those of us who do this professionally might actually have a lot more of a clue than you.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Mycroft Holmes16-Aug-09 12:20

Mycroft Holmes

16-Aug-09 12:20

sureyyan wrote:
Keep your advises and assumptions to yourself

Not a problem, YOU sort it out, I did many years ago.

You see had you come back with something along the lines of "What do you suggest" there would have been no end of links to articles to help you learn a more robust way of dealing with data.

As to my assumptions they are based on the quality of the question which indicates a newbie with no depth of knowledge beyond the first brush with the MS wizards. The advice I gave you was valid, you need to get past the built in wizard stuff and gain a deeper understanding of the data.

Now you have proven yourself to be both a newbie and rude, note the votes and the amount of support you received.

Never underestimate the power of human stupidity
RAH

sureyyan16-Aug-09 20:21

sureyyan

16-Aug-09 20:21

"Never underestimate the power of human stupidity"

"Never underestimate the power of arrogance without a class"

PIEBALDconsult16-Aug-09 4:47

PIEBALDconsult

16-Aug-09 4:47

Hear hear!

The DataAdapter and DataGrid(View) were developed simply to demonstrate how easy data access with ADO.net can be.
They should never be used in a production application.

CommandBuilder, upon which DataAdapter relies, is very limited in its abilities; it can't generate commands to update multiple joined tables.