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I am trying to get a splash screen to fade out using
Splash.Opacity = .50 But the error list tells me that "An object reference is required for the nonstatic field, method, or property 'System.Windows.Forms.Form.Opacity.get'" At the top of my program i have written
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Text;
using System.Threading;
using System.Windows.Forms;
and my references are: System, System.Data, System.Deployment, System.Drawing, System.Windows.Forms, and System.Xml.
What reference am i missing or how else should i assign the opacity?
Thanks in advance.
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Not that kind of reference.
You need a reference to an instance of an object.
Apparently you are calling it from a static method, perhaps from Main.
try something like:
<br />
Form myForm = new MyForm ( ... ) ;<br />
<br />
myForm.Opacity = .50 ;<br />
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Ok. I tried what you said, and it says it isn't a problem anymore, but it doesn't fade at all. I first declared "Splash SplashScreen = new Splash();" then under Form1 i put
InitializeComponent();
Form Splash = new Splash () ;
int SpOpac = 0;
Splash.ShowDialog();
while (SpOpac < 100)
{
Thread.Sleep(100);
SpOpac = SpOpac + 1;
Splash.Opacity = SpOpac;
}
Splash.Close();
I must still be doing something wrong. But what?
Thanks for the help.
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The UI thread is too busy (stuck in your while loop) to redraw your splash screen. Instead of using a while loop to change the opacity, add a Timer component to your splash form. You can do this in the Visual Studio Forms designer. Set its Interval property to an appropriate time, maybe 100 (milliseconds). Then setup the timer.Tick event handler. EAch time timer.Tick fires, increase the opacity by a little bit until it gets to 1.
p.s. Opacity is a double, not an int. 0 is completely transparent, 1 is fully opaque. So halfway transparent would be 0.5.
p.p.s. optionally, you can try adding a Splash.Update() call right after setting it's opacity. It probably isn't the best way to do it though.
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Doesn't Opacity have to decrease? And try putting it in the Load handler rather than the constructor?
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You may want to consider using AnimateWindow()[^] for a smooth fade in/out effect without having to resort to a loop.
/ravi
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Hi
i`am building a new project and i want to use an interface like the one in Microsoft Student 2006..
any ideas where i shoud start from or where i can find usefull information..
thanx
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Perhaps if you post a screenshot of what you're trying to imitate, we'd be more open to helping you. I've never heard of Microsoft Student, so I don't know what you're trying to accomplish.
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I have found myself yanked from the Unix systems programming world (C and assembler) to the Microsoft Windows server Administration.  I now have a MS windows system on my desktop with Visual Studio 2005. I'd like to start investigating systems programming with C# (if it is possible). Unfortunately there seems to be about a bizillion books and articles available compared to the handful for Unix. Someone suggested this website and here I am. For starters I thought well "Why not do something simple like fiddle around with IIS 6.0 settings on a test system." I don't want to start a favorite author war - but I'd like suggestions if you don't mind.
Greg (shoe) Schuweiler
Systems Curmudgeon
Friendly fire isn't.
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You'll be wanting to use WMI, google for it and you'll get plenty of examples/docs.
Try here
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I have a custom object using the DataObjectAttribute so I can bind it to controls the GridView. Now, everything works fine, but I would like the schema to be loaded in the designer so I can pick which columns to show or not at design time. I assume this is some sort of XML I need to put together, but obviously I am phrasing my searches wrong because google is coming up empty. Does anyone have a link to an article that explains how to do this?
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Does anyone know of a random number generator which is very fast and changes the random number at least 10 times per second? It doesn't have to be cryptographically secure, I just need one that runs very fast.
Thanks.
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How fast exactly is "very fast" in this case?
What have you been using as random generator to come up with the demand that it should change the random number on a time basis?
The built in class Random gives you a new random number every time you call the Next method.
---
It's amazing to see how much work some people will go through just to avoid a little bit of work.
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Guffa wrote: How fast exactly is "very fast" in this case?
A new random number at least 10 times per second.
I'm working on a program that needs new random numbers on a timed basis, therefore I need a random number generator that supports the programs timing.
Guffa wrote: The built in class Random gives you a new random number every time you call the Next method.
I know, but it requires so much processing power that it crashes my computer when I try to run it fast enough. It changes the random number fast enough, but it doesn't process the random number fast enough(up to 2 sec to get a random number; happens when trying to get several randoms quickly).
Thanks.
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What process takes 2 seconds? The Random.Next certainly doesn't:
<br />
System.Random r = new System.Random() ;<br />
<br />
for ( int i = 0 ; i < 100 ; i++ )<br />
{<br />
System.Console.Write ( r.Next() ) ;<br />
}<br />
takes less than a second to execute and generate 100 values.
I haven't tried it with a debug build, but maybe that's the problem? Try a release build.
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PIEBALDconsult wrote: takes less than a second to execute and generate 100 values.
And 99,9% of that time is spent scrolling the content of the console window.
---
It's amazing to see how much work some people will go through just to avoid a little bit of work.
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Bob X wrote: A new random number at least 10 times per second.
That's not fast. That's not even fast enough to be called slow.
Bob X wrote: but it doesn't process the random number fast enough(up to 2 sec to get a random number
Then you are doing something very very wrong. My computer can produce around 25 million random numbers a second.
---
It's amazing to see how much work some people will go through just to avoid a little bit of work.
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The RNG in the .NET Framework, or any other library for that matter, doesn't constantly computer random numbers and you just get the one that "fly's by" when you need it. The next number you get is calculated at the time you call .Next(). It's a formula that takes the previous value and generates a new value that appears to be random when an entire series of numbers is examined. That's why it's called a psuedo-random number generator.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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My question is:
I have a program that connects to a remote server through a certain port.
I want to make a program which will be like a buffer between the program and the remote server so i can see all traffic going between them both and filter data i dont want the program to recieve.
I dont know how to that, how can i listen to the port and grab it when the program try to connect ? how can i complete the connection after my program manages to grab the port ?
thank you.
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Basically, you need to write your own proxy server. The application connects to your proxy, which is listening on the port the app expects, then your proxy makes it's own connection to the app's server. It's commonly referred to as the "man in the middle". You get to examine and decide wheather a request from the client goes to the server or not as well as the reverse. Any data comming back from the server goes to your application where you decide if it's going to be forwarded to the client or not.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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is there any example in the site for such proxy ?
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Not that I know of. Even though it's pretty straight forward as far as Sockets go, noone who asks about something like this seems to get through an entire project. If you want a functional example of the concept, just Google for "SpamBayes".
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Ill look for SpamBays, thank you.
Today i made a http proxy server,
made a server and client using winsock, the server is listening to specific port and when ie try to get out to the web the server accepts the call and sends it throgh its own client to the desired location.
then made changes in ie->tools->internet options->connections->lan setting and wrote the new proxy address i made.
The thing i need to figure/understand now is how to make a program which is not ie go through my proxy, bet its hard. you have any idea ?
thank you.
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Hello gurus,
I'd like to know how can I convert 15 bits colors to 24 bits colors and vice versa?
Can anybody show me some code snipet to do that in both ways?
Best regards.
Fred.
There is no spoon.
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