|
HI 
when i want to input my equation (ex: ((Math.Pow(x,5)) + x - 1) ) from textbox to function this erro
appear . format exeption was unhandeld .
my code is here
public double func(double x)
{
return (double.Parse((txtEq.Text)));
}
i want to user can input equation from textbox.
Thank u so much 
|
|
|
|
|
Just typing in an equation and expecting the Double parser to understand and evaluate it, isn't going to work. You have to write your own equation parser and evaluate it yourself. There is nothing in the .NET Framework that will do this for you. Google for "Reverse Polish Notation" for information on one algorithm that can help you do this.
|
|
|
|
|
|
Hey all,
I was wondering if anybody else is experiencing problems trying to view any Microsoft websites such as MSDN.com, Hotmail.com, Microsoft.com or any other Microsoft website? For a week now I have been trying to get on to the MSDN website to check out some things but it never loads, my system has been scanned several times with a few different programs, and I know it isn't my firewall or my Internet because every other website works perfectly... Is Microsoft experiencing any problems? Thanks all
jay
foreach( inch on Jason )
{
Girlfriend.IsHappier();
}
|
|
|
|
|
They all work fine for me. Try clearing the browser cache.
|
|
|
|
|
jas0n23 wrote: Is Microsoft experiencing any problems?
Probably, but as for the MSDN website - it works fine.
|
|
|
|
|
Hi,
I would like to develop a VS 2005 Add-in that provides a new document editor for a custom file type of mine. Could someone point me at some documentation or a tutorial that would help me to achieve this because I am currently having difficulty finding any.
Thanks,
Steve
|
|
|
|
|
I have a main form that has a panel control and the user can select which of
the two "child" forms to display in that panel control from a menu selection.
Depending on which form is displayed in the panel, the app will display data from a Tektronix TDS-2024B scope or other data from an external
DAQ (Data Acquisition module). The current code shows the forms without a problem. But if I switch between the two forms; data is no longer updated in
the textboxes when I run a data capture routine for one form or the other.
However, if I do not switch from one form display to the other after firing up
the app, data is updated correctly.
Example code for one of the form displays in the panel is:
private void ScopeCapture_Click(object sender, EventArgs e)
{
frmTDS2024BScopeCapture TDS = new frmTDS2024BScopeCapture();
TDS.MdiParent = this;
TDS.TopLevel = false;
TDS.Dock = DockStyle.Fill;
//Container
this.panel1.Controls.Clear();
this.panel1.Controls.Add(TDS);
TDS.Show();
currentTest = "TDS";
////TDS.tbFreq.Text = "4578223"; //test only
}
The code for the second form is identical, except for the form reference.
Could I be having a problem with the Z-order of the panel when switching from one form to the other?
Hope someone has run into this before and can shed some light on the issue. I tried not to clutter this post with too many details.
If further code is required, please advise.
Thanks in advance,
Steve.
P.S. I have Googled, searched forums, etc till I'm blue in this face with this one.
|
|
|
|
|
The only thing that seems 'odd' to me at first glance is the line TDS.MdiParent = this;. From the code you have posted I can see no need for this. By adding TDS to the panel, you are not allowing the Main Form to operate properly as an MDI Parent, and I would suggest that you at least try running your Application with the line commented out and see if it runs OK.
I do not know if this will solve the problem entirely, but that line is certainly not helping.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
|
|
|
|
|
Thank you Henry for the reply.
I will try what you recommend.
I don't see many comments on the Web or MicroSoft on how to show forms in a
panel control. Could be, I'm trying something that has potential problems
that are not documented anywhere. As I mentioned, the forms show up in the panel control just fine. After switching between one and the other, the textboxes in those forms are no longer updated when expected.
I'm using a PXI chassis from National Instruments to capture data from several
voltage/current sources and as well as getting scope captures via a USB port from a Tektronix scope.
Best Regards,
Steve.
BTW, I don't read medical books. Former medical student here...
Then I got hooked on Math and programming and now this problem!
|
|
|
|
|
Good luck!
thompsons wrote: I'm using a PXI chassis from National Instruments to capture data from several
voltage/current sources and as well as getting scope captures via a USB port from a Tektronix scope.
Please don't ask me anything about that part, way out of my depth!
thompsons wrote: I don't see many comments on the Web or MicroSoft on how to show forms in a
panel control. Could be, I'm trying something that has potential problems
that are not documented anywhere
There are several examples of this here on CP, if you search the articles/messages. The only thing that strikes me about it is a matter of personal preference. I would set the FormBorderStyle property to None, but that's just my preference and has nothing to do with your problem. At the end of the day Form is a descendant of Control and therefore should act like any other control.
Here is a snippet from one of my apps:
private void btnForm_Click(object sender, EventArgs e)
{
Form newForm = new Form();
newForm.TopLevel = false;
newForm.Parent = this;
newForm.Visible = true;
newForm.Location = new Point(10, 10);
newForm.Size = new Size(this.ClientSize.Width - 20, this.ClientSize.Height - this.panel1.Height - 20);
newForm.BackColor = Color.Bisque;
newForm.FormBorderStyle = FormBorderStyle.None;
newForm.Dock = DockStyle.Left;
this.Controls.Add(newForm);
}
The only difference between yours and mine is that I add it directly to the parent form, you add it to a panel.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
|
|
|
|
|
powerList = new string[256] {"..." };
powerIndex = new string[30] {"..." };
typeIt = new int[256] { 1, ..., 2 };
am I not doing exactly what it says in MSDN?
<a href="http://msdn.microsoft.com/en-us/library/aa288453(VS.71).aspx">msdn
string[] names = new string[] {"Matt", "Joanne", "Robert"};
i swear for each stupid mistake I bring you guys, I fix a lot of them on my own...
|
|
|
|
|
msheekhah wrote: am I not doing exactly what it says in MSDN?
No.
Here is why you failed.[^] (After a simple Google[^] search)
msheekhah wrote: i swear for each stupid mistake I bring you guys, I fix a lot of them on my own...
That's why everyone(except you) looks for answers on Google[^] first rather than posting here.
My failometer is detecting vast quantities of FAIL!
"Its SQL - hardly programming..." (Caslen)
|
|
|
|
|
Without seeing the declarations for powerList, powerIndex and typeIt it is not possible to be absolutely sure.
Also are the ellipses meant to indicate that you have fully initialised the arrays, or are they what you have literally typed in your code.
Lastly it would be very helpful to know on which line the error occurs.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
|
|
|
|
|
Hey, a few days ago you claimed you knew OOP and C++, now it looks like we are getting updates on every line of you code because you can't get it to work. You should really get some basic info on C# so that you can write or at least google something yourself, for a change.
|
|
|
|
|
I think I found the MSDN page to add text, but I need to clear it first.
listBox1.Items.Add(((TextBox)sender).Text);
|
|
|
|
|
listBox1.Items.Clear(); ?
My failometer is detecting vast quantities of FAIL!
"Its SQL - hardly programming..." (Caslen)
|
|
|
|
|
Here's a hint. Try and break the problem down. If I were you, I'd be thinking along the lines "I know - I need to clear some items from this collection, so I have an Items collection. Now, what could the method be to clear things from Items?"
"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
|
|
|
|
|
that was helpful, it helped me answer a completely different question that I had in my head.  thank you.
foreach( inch on Jason )
{
Girlfriend.IsHappier();
}
|
|
|
|
|
this is declared inside of the Form1 class in a Windows Form Document
c#, VS2008
protected void loadSTPage()
{
character temp = new character();
what am I doing wrong?
|
|
|
|
|
The zero argument constructor for character hasn't been declared as public or internal. In your character class, declare it as:
public class character
{
public character()
{
}
}BTW - it's decent form to declare your class names using something called Pascal casing.
"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
|
|
|
|
|
I need to publish my encrypted C# application. The encryption is done by a third party software. After build, I encrypt exe and dlls. But when I used publish function in Microsoft Visual C# Express Edition, it rebuilt and generated publishing package. I tried to add Post Build Event to replace exe and dlls with encrypted ones, but the IDE's publish action ignored Post Build Events. In the published package, only non encrypted exe and dlls were published. Many other ways were tried, such as replace files manually and editing manifest files in Mage.exe. None of them worked. Had anyone done similar thing and made it working?
Many thanks ahead,
Kelly
|
|
|
|
|
I need answer to the same question too. I have read some articles about how I can do this and they all were saying that I should recreate a manifest file with Mage.exe . But it didn't work. I am using Dotfuscator to obfuscate my application (not the community edition).
|
|
|
|
|
The Dotfuscator is not integrated with Visual Studio? Can you use Post-build event to execute Dotfuscator commands and publish in Visual Studio?
|
|
|
|
|
It seems like it got integrated with VS after I installed it but I don't know how to obfuscate before publishing.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
