Re: MDI Forms and focus frustration, please help - C# Discussion Boards

Wendelius19-Jul-08 8:31

19-Jul-08 8:31

Hi,

try simply adding the same event handler to several text boxes using properties window in designer.

For furher study, investigate the generated designer.cs code. With a little effort you get the idea what happens at code level.

Hope this get's you going.

Mika

Re: Handles in C# ?

kindman_nb19-Jul-08 9:08

kindman_nb

19-Jul-08 9:08

thanks my friend and i will check it now

jooooo

Re: Handles in C# ?

Wendelius19-Jul-08 21:37

Wendelius

19-Jul-08 21:37

You're welcome. Smile | :)

Mika

Re: Handles in C# ?

Luc Pattyn19-Jul-08 8:53

Luc Pattyn

19-Jul-08 8:53

Hi,

if you have the same event handler for several Controls (either through Designer, or by code),
then the event handler can figure out which Control fired the event by looking at the first
parameter object sender.

Say e.g. all Controls firing this event are Buttons, then simply do
Button btn=(Button)sender; and you are holding the Button that fired the event.

You may want to be more defensive and use the as instead of a straight cast though.

Smile | :)

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Voting for dummies? No thanks. Dead | X|

Re: Handles in C# ?

kindman_nb19-Jul-08 9:12

kindman_nb

19-Jul-08 9:12

thanks my friend
you are right to use
sender
now I'm checking it and thanks for really kinds friends here

jooooo

Re: Handles in C# ?

Luc Pattyn19-Jul-08 9:26

Luc Pattyn

19-Jul-08 9:26

You're welcome.
Enjoy C#!

Smile | :)

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MDI Forms and focus frustration, please help

kensai19-Jul-08 6:56

kensai

19-Jul-08 6:56

I have a problem with mdi forms in my application. There are two mdi forms. They have scroll bars. There is a control on the left mdi form near to the top.

Now the problem is: I scroll the left mdi form to the bottom. I click to the other mdi form. I click back to the left mdi form and when the left one is activated/focused it automatically scrolls to the top where the control is and sets focus to it.

There're absolutely nothing in the code anywhere to do this. There're no .Focus() calls, no OnFocus event, .ActiveControl= etc. Nothing. I couldn't find a way to prevent this and it's driving me insane. I even tried to handle *FOCUS Windows messages it's receiving but failed. Can you please help me find a way to prevent this? I appreciate any help.

Re: MDI Forms and focus frustration, please help

kensai21-Jul-08 20:55

kensai

21-Jul-08 20:55

I've solved the problem. Turns out mdi form focusing to the control with lowest TabIndex value behavior is by design. Setting TabStop property of every control to false prevents this from happening.

Avoid Horizontal Scrollbars in Frameset using C#

satyaanand.andra@gmail.com19-Jul-08 2:44

satyaanand.andra@gmail.com

19-Jul-08 2:44

Hi I am using Frameset in my project,

my project is in .net

I am getting un necessary horizontal scrollbars in the project
it looks ugly

i dont want that horizantal scroll bars

how can i achive this..

Thanks,
Anand

[Off Topic/Wrong Forum] Re: Avoid Horizontal Scrollbars in Frameset using C#

Scott Dorman19-Jul-08 4:06

Scott Dorman

19-Jul-08 4:06

You should ask this in the ASP.NET forum, not here.

Scott Dorman

Microsoft® MVP - Visual C# | MCPD
President - Tampa Bay IASA

[Blog][Articles][Forum Guidelines]

Hey, hey, hey. Don't be mean. We don't have to be mean because, remember, no matter where you go, there you are. - Buckaroo Banzai

Problem with handling Timer

Faysal19-Jul-08 2:09

Faysal

19-Jul-08 2:09

Hi All,
I am facing a vary basic problem with timer. I want a timer to start counting an integer i with a start-button-press and stop counting with a stop-button-press. Then start counting again with start-button-press and so on. The code looks like the following sample snippet:

int i=0;
Timer tmrTest = new Timer();

public void OnTimerEvent_test(object source, EventArgs e)
{
   i++;
   txtCounter.Text = i.ToString();
}

private void btnStartTimer_Click(object sender, EventArgs e)
{
   tmrTest.Enabled = true;
   tmrTest.Interval = 500;
   tmrTest.Tick += new System.EventHandler(OnTimerEvent_test);
}

private void btnStopTimer_Click(object sender, EventArgs e)
{
   tmrTest.Enabled = false;
}

The problem is on start-button-press first time it counts i as i+1 but in second start-button-press it counts i as i+2, for 3rd it's i+3 and so on. But I want the counting to be always i=i+1;

May be this is a very simple issue while handling timer but I failed to get any solution. Please help me to solve this out. And tell me the reason, why is this timer behaving like this?

Thanks in advance
Faysal

Re: Problem with handling Timer

Luc Pattyn19-Jul-08 2:20

Luc Pattyn

19-Jul-08 2:20

Faysal wrote:
tmrTest.Tick += new System.EventHandler(OnTimerEvent_test);

Hi, this line should be executed only once ever. The way you have it, each time you click
the start button, it will add a handler to the event, so after N starts, each tick will
increment the counter N times.

You may want to read my article on events and delegates.

Smile | :)

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Voting for dummies? No thanks. Dead | X|

how to make css builder

mahmoud wafy19-Jul-08 1:46

mahmoud wafy

19-Jul-08 1:46

hi,

I want to make css Builder how to make it please help me.

thanks

Wafy

Re: how to make css builder

Guffa19-Jul-08 6:29

Guffa

19-Jul-08 6:29

The first step is to specify what it should actually do.

Despite everything, the person most likely to be fooling you next is yourself.

How to align Indian Language Marathi text in Crystal Report

UpwardMF19-Jul-08 1:25

UpwardMF

19-Jul-08 1:25

We are having a Crystal Report with Unicode data (Indian Language-Marathi) as
an output.The report is getting generated but at line break a word is getting
cut instead of getting wrapped in next line.

We are working with Crystal Report which is a part of VS 2005.

Please suggest the solution either in Crystal or any other Reporting
method/Tool.

Thanks

setup and deploment wiindows application

vishnukamath19-Jul-08 1:03

vishnukamath

19-Jul-08 1:03

we developed windows application using C#,and we created setup file(Using Installer Class also ) for this ,this setup runnig succes fully in my machine ,but problem it was not runnig in Client Machine ,it is showing error " login Failed User is Not Trusted user " . How Can Connect client Sql Server 2005 .Could u Please help me.

Expire Date For Program?

sitnet18-Jul-08 23:46

sitnet

18-Jul-08 23:46

Hi
As regard a Program, How can I Determine An Expire Date By Means Of a Code?

Thanks.... Sleepy | :zzz:

MultiCast Group range

DeepOceans18-Jul-08 23:36

DeepOceans

18-Jul-08 23:36

Hi,
I'm transmitting Live video over LAN by joining multicast group address "224.0.0.1".At client side, for receiving video I used same group address.
I've read that multi Cast range is from 224.0.0.1 to 224.255.255.255 but I tested my server application with max. 3 clients.
Can any one tell me the video which is transmitting at this address, How many systems can preview it.
And what should be hardware constraints
Regards,

Shanzay

how to write to css file?

mahmoud wafy18-Jul-08 23:19

mahmoud wafy

18-Jul-08 23:19

hi frien ,

Iam working on project (windows application) site builder ,

I want to write to css file in specific element or specific class or id

,edit it and read it pleas help me to do it.

thanks

Wafy

index was outside the bounds of the array

NewToAspDotNet18-Jul-08 23:07

NewToAspDotNet

18-Jul-08 23:07

Hi All,

Im getting the error 'index was outside the bounds of the array'
on the line:
Datatable dt = new Datatable();

Can anyone tell me what is the problem here?

Thanx

Re: index was outside the bounds of the array

Mbah Dhaim19-Jul-08 0:39

Mbah Dhaim

19-Jul-08 0:39

i don't see any array here but some code error (maybe mistyping)

Datatable dt = new Datatable();

change to

DataTable dt = new DataTable();

so where is the error raise???
Unsure | :~

dhaim
program is hobby that make some money as side effect Smile | :)

web application to windows application format

Member 387988118-Jul-08 21:39

Member 3879881

18-Jul-08 21:39

Hi i created in my web application dynamically some excel files...,

Now same thing i want to do in windows apllication...,

But there i wont get any web.ui , web.ui.htmlcontrols and webcontrols..,

But using that one only i created excel files in my web application...,

Now insted of that interface what i have to implement it in windows application...,

Its my web app code:
for (int i = 0; i < DS.Tables.Count-1; i++)
{
System.Web.UI.WebControls.DataGrid grid = new System.Web.UI.WebControls.DataGrid();
grid.HeaderStyle.Font.Bold = true;

foreach (DataRow dr1 in DS.Tables[i].Rows)
{
foreach (DataRow dr2 in DS.Tables[i + 1].Rows)
{
if (dr1["MID"].ToString() == dr2["MID"].ToString())
{
if (!Directory.Exists(_path + "\\" + dr1["MID"].ToString() + @"\"))
{
Directory.CreateDirectory(_path + "\\" + dr1["MID"].ToString() + @"\");
string _XLSPATH = _path + "\\" + dr1["MID"].ToString() + "\\" + dr1["Name Of Employee"].ToString() + ".xls";

using (StreamWriter sw = new StreamWriter(_XLSPATH))
{
using (HtmlTextWriter hw = new HtmlTextWriter(sw))
{
grid.DataSource = DS.Tables[i];
grid.DataBind();
grid.RenderControl(hw);
}

}
}

I dont have knowledge about windows...,
Plz guide me

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

listbox

netJP12L18-Jul-08 19:40

netJP12L

18-Jul-08 19:40

I am loading 300 pictures inside the listbox but when i scroll up and down
all the way the memory goes from 32,000k to 689,000k and up and also it doesn't come down.

Form1.cs

LisboxClass lb = new ListBoxclass();
lb.Size = new Size(200, 524);
Form1.Controls.Add(lb);
string[] str = Directory.GetFileSystemEntries(Application.StartupPath + @"\images");

lb.BeginUpdate();
PictureControl picControl;
foreach (string s in str)
{
picControl= new PictureControl(s);
lb.Items.Add(imgcontrol);
}
lb.EndUpdate();

This is how I am drawing Items

Bitmap b = new Bitmap(800, 800);
Rectangle rect = new Rectangle(0, 0, 120, 80);
private void ListBoxclass_DrawItem(object sender, DrawItemEventArgs e)
{

((PictureControl)Items[e.Index]).DrawToBitmap(b, rect);
e.Graphics.DrawImage(b, e.Bounds.X + 40, e.Bounds.Y + 5, 120, 80);
}

Re: listbox

Mbah Dhaim19-Jul-08 0:58

Mbah Dhaim

19-Jul-08 0:58

For each image file you load, create its thumbnail in the stream to reduce its memory used, then draw to your listbox. Or you can store that thumbnail in imagelist (as cache) then draw to your listbox.

according your code you have to manage at least 300 object that contains image, but in my opinion i will use one object that manage all 300 image

hope it helps

dhaim
program is hobby that make some money as side effect Smile | :)

Re: listbox

Luc Pattyn19-Jul-08 1:40

Luc Pattyn

19-Jul-08 1:40

Hi,

your code will rescale the original images over and over, every time DrawItem is called.
This is an expensive operation, both for CPU cycles and memory. I suggest you calculate the
images you need just once, at the right size, and keep those available in each item of your ListBox.

That way, your ListBox will scroll much faster, and your memory footprint will be lower.
BTW: not sure how you observe your memory footprint, it not coming down is not necessarily bad.

BTW2: the Image (and hence also the Bitmap) class offers a Dispose() method, you should call it
explicitly when you are done with the Image (Bitmap) for better performance too. Think of it
as closing a file.

Smile | :)

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