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It depends. When do you want to save the values of these textboxes?
www.troschuetz.de
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Stefan,
I want to save text and numbers which I put in text box in "data.txt" file in some directory.When I put that values in taext box and press button I want that vales to be written in that particular file(so I can run fortran file which is dependent on these values in data.txt). Also, can I somehow restrict text field to except just text or just numbers?
thank You very much Stefan for efford
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alancatovic wrote:
and press button I want that vales to be written
You have to define an event handler for the Click event of that Button.
If your using Visual Studio select the button in the Form designer, go to the properties window, click on the yellow bolt to display available events of this button and double-click on Click. The designer creates the event handler, subscribes it and jumps to the event handler in the code file. Into the event handler you put the code, I gave you yesterday.
If you don't use an IDE, you have to insert the following code on your own:
this.button1.Click += new EventHandler(this.button1_Click);
void button1_Click(object sender, EventArgs e)
{
}
alancatovic wrote:
can I somehow restrict text field to except just text or just numbers
You can. Subscribe an event handler for the KeyPress event of each TextBox and insert the following code.
void textBoxXX_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar.IsNumber)
e.Handled = true;
}
www.troschuetz.de
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'System.EventArgs' does not contain a definition for 'KeyChar' is showing in the error panel when I put the code
if (e.KeyChar.IsNumber)// if (!e.KeyChar.IsNumber)
e.Handled = true;
under the textbox
what now?
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also, this happens
The type or namespace name 'StreamWriter' could not be found (are you missing a using directive or an assembly reference?)
and
The type or namespace name 'sw' could not be found (are you missing a using directive or an assembly reference?)
when I try to put this code
using (StreamWriter sw = new StreamWriter("file.txt"))
{
sw.WriteLine(textBox4.Text);
sw.WriteLine(textBox5.Text);
sw.WriteLine(textBox6.Text);
}
under my button.
Can my program be cured :=))
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Put using System.IO; at the beginning of your code file. There should already be some similar statements e.g. using System.Windows.Forms;.
The using directive permits the use of types in a namespace without having to specify the namespace i.e. you can simply write StreamWriter instead of System.IO.StreamWriter.
www.troschuetz.de
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No it doesn't, but fortunately the KeyPressEventArgs object that gets passed to an event handler for KeyPress event contains this property.
void textBoxXX_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar.IsNumber)
e.Handled = true;
}
www.troschuetz.de
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"Method 'char.IsNumber(char)' referenced without parentheses
"
is showing now when I do that
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Hi all,
I want to create a MDI Application as below :
I have a main form.
All child forms opened are in main form.It's OK.
I want : All grandchild forms(opened from child forms ) are also in main form.
Can someone help me ?
Thank !
To love in vain more than love no one.
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Hi,
One immediate solution is to the pass the reference of the main MDI form to all the child forms. You can set the MdiParent property of the grand child form to the main MDI form.
Regards
SGS
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Hi,
I mean I want the grand child form (showdialog() from the child form) is still in main form.
Thank for your reply !
To love in vain more than love no one.
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hi all,
I want to display the SQL Server Names in my Network and display the database names according SQL Server..
How do I do that?
please reply if anybody know the answer..
Thanks in advance..
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I've been looking into this and haven't been able to find any way of doing it in .Net either so if anyone can help it would be appreciated.
Kev
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I asked for a .Net way of doing it, these guys are using SQLDMO which is a com object so a bit less of the sarcasm next time.
Also there have been reports of SQLDMO hanging if there is not a network cable in your machine, not had this happen to me but it's worrying. Also, it does not detect instances on your machine, only instances on other machines so if you are running it from the server you want to use it's not gonna work.
I know that .Net 2.0 has built in functions to do this but i'm not allowed to use it as it's still in Beta.
Kev
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Sarcasm is my middle name, no offence intended 
The link to the CP article has 4 methods to do this (one being SQLDMO) - the one chosen by the article author was not SQLDMO - it was ODBC and PInvoke.
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How to find monthly resource utilization from microsoft project server 2003 and disply it in webform .I am using asp.net and C# language.Please help me as fast as possible.Feel free to mail the code at sathesiddharth@gmail.com
Thanking u in advance,
Siddharth sathe
sidd
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I am currently binding a textbox to a property "Name" in a custom class.
Code:
textBoxExt1.DataBindings.Add("Text", myClass, "Name");
The binds works, however it appears to only update the property when I leave the textbox.
Is there any way I can get the binding to update the property when the TextChanged Event of the textbox is fired?
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Updating the property value when the control loses focus is the correct behavior whether you're binding to a property (using a PropertyManager) or to a data field (using a CurrencyManager). Changing this behavior is possible, though not recommended. Actually setting the value is mostly consistent throughout most programs, committing only after losing focus or purposefully committing a change or changes (like clicking a button or an accelerator).
You'll need to use reflection to invoke the protected BindingManagerBase.PushData method, which should work:
void Commit()
{
BindingManagerBase bindmgr = textBox1.DataBindings[myClass, "Name"];
MethodInfo method = bindmgr.GetType().GetMethod("PushData",
BindingFlags.NonPublic | BindingFlags.Instance);
if (method != null)
method.Invoke(bindmgr, null);
}Call Commit with each key press, for which you could override OnTextChanged in your extended control or handle the TextChanged event from an external source (like a Form or UserControl). There are other methods you could override, so I urge you to read the member documentation for the Control class in the .NET Framework SDK.
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles] [My Blog]
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Good day!
I'm currently working on a client/server program.
Commonly servers are running a thread that continually loops to listen and accepts client socket connections. I have this thread that listens for connections, and it works fine, but cpu usage reaches 100%! 
Is there any possible way to create a server that does not require such heavy cpu usage?
thanks 
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What kind of socket do you use?
A blocking socket should not produce high cpu usage, because each loop waits for one connection.
<br />
while(isRunning){<br />
activeSocket = listeningSocket.Accept();<br />
StartNewThreadAndDoSomething(activeSocket);<br />
}<br />
An asynchronous, non-blocking socket does not need a loop at all. You just tell it to begin listening, and then wait for an event. If you put socket.BeginAccept into a loop, the effect you described would happen...
_________________________________
Vote '1' if you're too lazy for a discussion
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By "socket.BeginAccept" did you mean socket.Receive()?
public void listensend()
{
while(keepalive)
{
byte[] buffer = new byte[1024];
int rcount = sourceSocket.Receive(buffer,buffer.Length,0) ;
...
If so, I really did placed it inside a loop. this method listensend is the thread that runs for the client (the "StartNewThreadAndDoSomething")
but wasn't this the right thing to do? I mean how does the server keep on listening for client messages when it is not in a loop?
thanks i appreciate the reply
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It sounds as if your socket has got switched into non-blocking mode. This might have happened if the framework has called an asynchronous checking function (WSAEventSelect) on your behalf. I think this is pretty unlikely, though.
For high-performance servers, it's generally better to use asynchronous I/Os. This normally allows a small pool of threads to serve a large number of requests.
In particular reference to this code, I'd recommend creating the buffer before the while loop, not creating a new buffer on every iteration. You're likely to end up spending far longer in the garbage collector than necessary.
Stability. What an interesting concept. -- Chris Maunder
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thank you. I'll move the buffer creation.
I still don't have much of an understanding to blocking/non-blocking mode. If it is set to non-blocking mode... then will it surely consume 100% cpu usage?
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