Re: C# Screensaver - C# Discussion Boards

hoe to pass parameter in crystal report dynamically?

help as an alias25-Jul-07 0:00

25-Jul-07 0:00

i want to pass two sting parameters in crystal report to run the query
SELECT * FROM xyz WHERE abc BETWEEN 'parameter1' AND 'parameter2'

i want to write the code on form which have crystal report viewer but i have no idea, i also searched on internet but that was not helpfull. anybody can give me code that will work than i will be your thankful. Confused | :confused:

Nikesh Kr. Yadav

CSS Infotech
Sec- 31
Gurgaon,
Haryana(India)

Re: hoe to pass parameter in crystal report dynamically?

Nouman Bhatti25-Jul-07 2:54

Nouman Bhatti

25-Jul-07 2:54

try this link.

http://www.thescripts.com/forum/thread225413.html

Re: hoe to pass parameter in crystal report dynamically?

help as an alias25-Jul-07 3:00

help as an alias

25-Jul-07 3:00

thakx but i was the same answer on google.
but its really thankx for your reply
one more thing can you answer me

how to some the number in crystal report?

Nikesh Kr. Yadav

CSS Infotech
Sec- 31
Gurgaon,
Haryana(India)

mouse event

cyn824-Jul-07 23:56

cyn8

24-Jul-07 23:56

hi, i have a question. imagine i have a window form and in it i have a panel. now, i need to do a mousedown on the form and then mouseup in the panel. The idea here is to create a drag and drop action. However, the by creating those events, it does not seem to work because the mouseup event is never called although i click on the mouse on the form and then hold and finally release in the panel area.
What events should i use since this can''t work?

Thanks in advance.

Re: mouse event

Eduard Keilholz25-Jul-07 0:22

Eduard Keilholz

25-Jul-07 0:22

Why don't you just use the drag & drop functionality a form already supports.. It will save you a lot of headache!

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

Re: mouse event

Martin#25-Jul-07 0:29

Martin#

25-Jul-07 0:29

Hello,

The trick is to handle the MouseUp from the form as well, and check if the Cursor is in the Panel range.

Point pt = yourPanel.PointToClient(Cursor.Position);
Rectangle rc = yourPanel.ClientRectangle;
if (rc.Contains(pt))
{	
    //It's in the panels range
}

Hope it helps!

All the best,

Martin

C# Screensaver

Identity Undisclosed24-Jul-07 23:52

Identity Undisclosed

24-Jul-07 23:52

Hi,

I am creating a developing screensaver in C#. I have done everything to create screensaver. Now I am stuck in a problem. How to create a scr file ? I have renamed the exe to scr. However, if I right click the scr file and select the install option, my antivirus prompts a suspicious activity. Any help on this ?

Thanks,

"C makes it easy to shoot yourself in the foot. C++ makes it
harder, but when you do, it blows away your whole leg."
- Bjarne Stroustrup

Re: C# Screensaver

Martin#24-Jul-07 23:57

Martin#

24-Jul-07 23:57

Identity Undisclosed wrote:
How to create a scr file ? I have renamed the exe to scr

That's it!

Identity Undisclosed wrote:
However, if I right click the scr file and select the install opti

You don't need to install it!
Just copy it in the "Windows" directory.

All the best,

Martin

Color GroupBox

mjelten24-Jul-07 21:32

mjelten

24-Jul-07 21:32

Hi!

Is there some way to get the same color of the GroupBox Heading and put it on a Label? The color is different depending on which Xp theme you are using.

/Mjelten

Re: Color GroupBox

Jon Hulatt24-Jul-07 23:03

Jon Hulatt

24-Jul-07 23:03

Enumeration System.Drawing.KnownColors contains all of the system defined colours. The Groupbox heading will be one of these - but you'd probably need to experiment to work out which one.

using System.Beer;

Re: Color GroupBox

mjelten24-Jul-07 23:12

mjelten

24-Jul-07 23:12

Ok, thanks but how do get access to the color
I can not set label1.ForeColor = System.Drawing.KnownColor.something

error: Cannot implicitly convert type 'System.Drawing.KnownColor' to 'System.Drawing.Color'

Re: Color GroupBox

Martin#24-Jul-07 23:18

Martin#

24-Jul-07 23:18

Hello,

The Color class provides the static FromKnownColor[^] method.

label1.ForeColor = Color.FromKnownColor(System.Drawing.KnownColor.something);

All the best,

Martin

Re: Color GroupBox

Jon Hulatt24-Jul-07 23:29

Jon Hulatt

24-Jul-07 23:29

Or you could use the SystemColors class.

Either way, you should seriously consider using MSDN. Sometimes, reading the manual can actually help.

using System.Beer;

Re: Color GroupBox

mjelten24-Jul-07 23:56

mjelten

24-Jul-07 23:56

It is not in the there, I listed all the colors from http://msdn2.microsoft.com/en-us/library/system.drawing.knowncolor.aspx[^] and compred them. There are only a few of them that change when you change theme and non of them maches the color of the GroupBox Heading. Other suggestions?

Re: Color GroupBox

Jon Hulatt25-Jul-07 0:33

Jon Hulatt

25-Jul-07 0:33

Then you have to use visual styles stuff to get the answer:-

using System.Windows.Forms.VisualStyles;

....

VisualStyleRenderer vr = new VisualStyleRenderer( VisualStyleElement.Button.GroupBox.Normal);
Color cr = vr.GetColor(ColorProperty.TextColor);

using System.Beer;

Re: Color GroupBox

mjelten25-Jul-07 1:12

mjelten

25-Jul-07 1:12

Thank you! Been working with this for a long time... Perfect solution!

How to set Window title from different thread?

AghaKhan24-Jul-07 21:25

AghaKhan

24-Jul-07 21:25

I have created a thread and I want to change the title of my window from that new thread, but I get exception with message "accessed from a thread other than the thread it was created on."

Any solution? Confused | :confused:

agha.khan@hotmail.com

Agha Khan

Re: How to set Window title from different thread?

il_masacratore24-Jul-07 21:36

il_masacratore

24-Jul-07 21:36

You have to use deletegates. To use it you must declare a void method that accepts a string as a input parameter, and a delegate with the same parameters and return.

Then, when you want change the text you must create the previous created delegate and pass the method name as parameter. Then you call form's "Invoke" with the delegate the string (inside of an array of objects) if Invoking is required.

//Declarations <br />
protected delegate void ChangeFormTextCallback(string pText);<br />
<br />
public void ChangeFormText(string pText)<br />
{<br />
this.Text = pText;<br />
}<br />
<br />
//Use<br />
<br />
...<br />
<br />
ChangeFormTextCallback oCllBack = new ChangeFormTextCallback(ChangeFormText);<br />
if (this.InvokeRequired)<br />
{<br />
    this.Invoke(oCllBack , new object[] {"New Text"});<br />
}<br />
else<br />
    voControl.Text = vsTexto;<br />
...

Re: How to set Window title from different thread?

AghaKhan24-Jul-07 22:12

AghaKhan

24-Jul-07 22:12

Thank you. It works very well.
Best regards
Agha Khan;P

Re: How to set Window title from different thread?

blakey40425-Jul-07 2:37

blakey404

25-Jul-07 2:37

just to add, if you are using multi threaded windows applications it is good practice to do this whenever updating the screen. it forces the method to be called on the main thread, which is marked in you app by the tag [STAThread].

AppDomain.Unload() problem

cellardoor071624-Jul-07 21:06

cellardoor0716

24-Jul-07 21:06

I´m trying to dynamically load and unload assembly. The load part works just fine, but there are some problems with the unload part. It seems that the calling assembly didn´t release the dynamically loaded assembly, because I can´t recompile it.

Here is sample of my code:

AppDomain ad = AppDomain.CreateDomain("TestDomain");
Assembly a = ad.Load(Assembly.LoadFile(@"D:\Test.dll").GetName());
.
.
some code
.
.
AppDomain.Unload(ad);

Can anyone help me with this?

cellardoor

Re: AppDomain.Unload() problem

Luc Pattyn24-Jul-07 22:20

Luc Pattyn

24-Jul-07 22:20

Did your app really exit ? or does it still show in Task Manager ? (probably because one
of its foreground threads did not finish, because it isnt done yet, or you forgot to make
it a background thread).

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Can't We pass Parameterized Method to a thread??

Ron.S24-Jul-07 20:47

Ron.S

24-Jul-07 20:47

Hello All,

I am trying to call a method through thread . it is working if the method does not contain any parameter, if it has got a parameter then it will pop up error stating that method name expected.

Am i missing something here to perform this action.

Thanks

Bharath.S Ron

Re: Can't We pass Parameterized Method to a thread?? [modified]

ekynox24-Jul-07 21:15

ekynox

24-Jul-07 21:15

you need to use the ParameterizedThreadStart delegate which is part of the Threading namespace in .NET 2.0.

i.e

public void RunThread()
{
 int parameter = 20;
 Thread t = new Thread(new ParameterizedThreadStart(SampleMethodWithParameters));
 t.Start(parameter);
}


private void SampleMethodWithParameters(object parameter)
{
 for(int index = 0; index < Convert.ToInt32(parameter); index++)
 {
   Console.WriteLine("HelloWorld " + index.ToString());
   Thread.Sleep(1000);
 }
}</code>

edit:
no idea why my half my FOR loop is being displayed but hopefully that should give you an idea.

-- modified at 3:28 Wednesday 25th July, 2007

Re: Can't We pass Parameterized Method to a thread??

Ron.S24-Jul-07 22:57

Ron.S

24-Jul-07 22:57

thank you very much

Bharath.S Ron

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.