C# Discussion Boards - CodeProject

Re: Button Event Occur when i refresh the page

Pete O'Hanlon15-May-07 9:35

Pete O'Hanlon

15-May-07 9:35

Well, you may want to look into Ajax. This doesn't use postbacks.

Deja View - the feeling that you've seen this post before.

Re: Button Event Occur when i refresh the page

srirammails15-May-07 2:52

srirammails

15-May-07 2:52

use if not Page.postback

Re: Button Event Occur when i refresh the page

Jabeerbe15-May-07 2:57

Jabeerbe

15-May-07 2:57

There is such option available. U mean to say Ispostback Option. If i give the Ispostback option. When the page refresh that will also run.

Regards,
A Jabeer Ali

Printing a DataGridView

Gareth H15-May-07 0:11

Gareth H

15-May-07 0:11

Hi,

Im trying to print a data grid view. I currently have 2 methods, one converts the control to an image (DrawToBitmap) and the other goes through the data rows and draws strings.

The problem i'm having is when converting the control to a bitmap, since it only displays what is on the screen, and not the whole control.

Bitmap dataGridViewImage = new Bitmap(dataGridView.Width, dataGridView.Height);<br />
Rectangle dataGridRects = new Rectangle(0, 0, dataGridView.Width, dataGridView.Height);<br />
dataGridView.DrawToBitmap(dataGridViewImage, dataGridRects);

The above code is what i do to convert it to an image. I played around with it abit, and found that if i changed the dataGridView.Width/Height values, it would actually display whats not on the screen. However, since i never know how big the
dataGridView is, how would get the correct size?

Any ideas/anyone had this before?

Regards,
Gareth.

capture still image from webcam

samreengr814-May-07 23:42

samreengr8

14-May-07 23:42

does any1 know how 2 capture still image from webcam and then paint that image file on the form using C#....... Any article u recommend with more description so that I can get it...........
THANX 4 ur help in advance.........

Notification Form - Not working - Asynchoronous Prog.

BAIJUMAX14-May-07 23:36

BAIJUMAX

14-May-07 23:36

Hi,

Have a Scenario like below .
In my prog. there's Async. calls to listen messages from network. Whenever any error occurs i have to pop-up a message window to user. I used Raise event whenever i got error. Raise event calls a Notification manager delegate which will create the notification form and pop up. initially this window greyed out. But added DoEvents()soon after creating window solved the problem.Now i'm able to click on the cancel button in the window. That is control is not transferred to notification window. where as i can still work with other opened windows.
How do i pass control focus to notifaction message box.

BY
BAIJUMAX

"Things are simple by nature ; oh hooo ; Are we making things complex" D'Oh! | :doh:

Nicer way to validate a value type out of System.Data.DataRow

Martin#14-May-07 23:21

Martin#

14-May-07 23:21

Hello everbody!

Just looked threw my project and found code which I don't like at all.

I'm having an instance of DataRow and go threw it in a loop.
There I need to store the data for example in a double array.

This is what I do now:
if (myrow[x].GetType() == typeof(System.Double))
{
doublearray[x]= (double)myrow[x];
}

For reference types I would use the "as" operator!
Is there a nicer way to do this?

Thanks for suggestions!

All the best,

Martin

Re: Nicer way to validate a value type out of System.Data.DataRow

PIEBALDconsult15-May-07 9:23

PIEBALDconsult

15-May-07 9:23

if (myrow[x] is System.Double)

(I rarely use as; I usually just cast.)

Re: Nicer way to validate a value type out of System.Data.DataRow

Martin#15-May-07 9:45

Martin#

15-May-07 9:45

Hello,

PIEBALDconsult wrote:
if (myrow[x] is System.Double)

Does this compile?
I thought it's (is and as) only working for reference type.

All the best,

Martin

Re: Nicer way to validate a value type out of System.Data.DataRow

PIEBALDconsult15-May-07 10:10

PIEBALDconsult

15-May-07 10:10

I use it.

Re: Nicer way to validate a value type out of System.Data.DataRow

Martin#15-May-07 21:45

Martin#

15-May-07 21:45

Hello,

Sorry!
Just tested it and found out that is also works with valuy types, but as only works with reference types.

All the best,

Martin

Re: Nicer way to validate a value type out of System.Data.DataRow

PIEBALDconsult16-May-07 13:09

PIEBALDconsult

16-May-07 13:09

It's better to try something even if you think it won't work.

disabling the movement of Form window

fgfdhghgfd14-May-07 23:15

fgfdhghgfd

14-May-07 23:15

hi everybody

how could i disable the movement of form window.when i put the mouse pointer on taskbar and drag it the form window also moves with it and i want to disable it.Give some clue. if possible send some c# code.

Re: disabling the movement of Form window

KLASTER14-May-07 23:21

KLASTER

14-May-07 23:21

private void Form1_Move(object sender, EventArgs e)<br />
       {<br />
           int left = 15, top = 15;<br />
           this.Left = left;<br />
           this.Top = top;<br />
       }

-------------------
You can go a long way with a smile. You can go a lot farther with a smile and a gun. (C) Al Capone

Re: disabling the movement of Form window

Eduard Keilholz14-May-07 23:21

Eduard Keilholz

14-May-07 23:21

Why do you post this question over and over again??

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

Re: disabling the movement of Form window

Martin#14-May-07 23:23

Martin#

14-May-07 23:23

Hello,

Maybe the "Locked" property helps you here!

All then best,

Martin

ListDirectory

Sabry190514-May-07 23:04

Sabry1905

14-May-07 23:04

Hello All
I had used "WebRequestMethods.Ftp.ListDirectory"
but it returns a string contains html format
I thought it returns a string that contains files names
how we can resolve that?

Re: ListDirectory

dotnetcdr15-May-07 23:55

dotnetcdr

15-May-07 23:55

Can you post an output of what you are getting back?

It is supposed to be a CRLF terminated string of files and there should not be any HTML returned.

hi need help with configurationmanager

neodeaths14-May-07 22:59

neodeaths

14-May-07 22:59

SqlConnection conn = new SqlConnection((ConfigurationManager.ConnectionStrings["HASDBConnectionString1"]).ToString());

hi the above code is what i used in my asp.net to get the connection string from the web.config

now i am trying to get the connection string for my c# window application using visual studio 2005 project

but it sseems the same code dont work can any one show me how?

Re: hi need help with configurationmanager

BAIJUMAX15-May-07 0:05

BAIJUMAX

15-May-07 0:05

Check System.Configuration namespace.

alternatively
My suggestion is to create custom ConfigurationManager sigleton class , initialize at the startup.

BAIJUMAX Cool | :cool:

"Coolest thing on earth is...? Guess what? as per my knowledge 'ICE' , anythingelse pl's let me know " Blush | :O

Re: hi need help with configurationmanager

Nouman Bhatti15-May-07 1:57

Nouman Bhatti

15-May-07 1:57

In desktop application u should use

System.Configuration.ConfigurationSettings.AppSettings.Get("ElementName")

Re: hi need help with configurationmanager

neodeaths15-May-07 5:46

neodeaths

15-May-07 5:46

<configuration>
<add name="HASDBConnectionString1" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\HASDB.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/>
</configuration>

hi the above is the part of the configuration file that i am trying to get..

the connection string part.

i tried your method but it doesnt seems to work could you please try to help me again pls?

Re: hi need help with configurationmanager

Nouman Bhatti15-May-07 20:00

Nouman Bhatti

15-May-07 20:00

<configuration>
<appsettings>
<add key="Connection string" value="server=machinename;database=dbname;">
<add key="Server" value="machinename">
<add key="Database" value="dbname">

you have to modify your app.config file to look like above.

then u can use what i said earlier..
try it and if u still not been able to do it.
then i'll make a sample for u.

Re: hi need help with configurationmanager

neodeaths16-May-07 14:59

neodeaths

16-May-07 14:59

yes an sample would be nice thx u

as my situation is that i am trying to use the connection string in my app.config

however i only know how to do it in an window application

thx in advance

an Mdi gui problem

barak16048714-May-07 22:28

barak160487

14-May-07 22:28

hello,
i have an MDI form that called FORM1
an I have a child form FORM2

I wrote:
form2.MDIPerent = form1

it works but in the side i get scroll bars
how I get over the scroll bars?

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