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hi all,,, How i insert ListBox items to Array in c#..?
CheeN
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sacr83,
Does this help?
object[] listBoxObjects = new object[listBox.Items.Count];
listBox.Items.CopyTo(listBoxObjects, 0);
Regards,
Gareth.
(FKA gareth111)
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I have to say - this is easily found using google, or even MSDN. Try working it out yourself instead of relying on other people to do your coding for you.
string[] listItems = new string[this.listbox.items.count];
for (int i = 0; i < this.listbox.Items.count; i++)
{
listItems[i] = this.listbox.Items[i];
}
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Mr John Simmons..
Thank you very much for your help.really it works.really thank you.
CheeN
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Vote my response.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Hello everyone,
Mentioned here,
http://msdn.microsoft.com/en-us/library/system.decimal(VS.80).aspx
What means "The scaling factor also preserves any trailing zeroes in a Decimal number"? Could anyone show me a sample please?
thanks in advance,
George
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It means simply that it will not chop off any trailing zeros from your number i.e. 12.450 does not become 12.45
Hope that helps
Bob
Ashfield Consultants Ltd
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Thanks Bob,
Your sample pretty well demonstrates what means "preserves any trailing zeroes", but I am confused about what means "scaling factor also preserves" here?
BTW: I have the background of how Decimal and float are stored internally, but I do not know how could we utilize scale (I think it is the exponent) to preserve zero?
regards,
George
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As I said originally, it preserves the number of decimal places. A quick look at MSDN for decimal says "The scaling factor specifies the number of digits to the right of the decimal point; it ranges from 0 through 28"
Bob
Ashfield Consultants Ltd
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Thanks Bob,
From the link,
http://msdn.microsoft.com/en-us/library/system.decimal(VS.80).aspx[^]
I can not find "The scaling factor specifies the number of digits to the right of the decimal point; it ranges from 0 through 28", could you post the link where you find the statement you quoted please?
I want to read more.
regards,
George
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Hi,
Is the .Net winform development is competitive tool for windows system programing???? [Unsure] really? What is position of .Net winform developer in developers market? Is C# being preferred over c/c++ by any developer any point of time for system programming , embedded system programming?
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Any Microsoft programming skills you have are marketable, so pick the one you like.
Second, .Net is more than just WinForms. If you limit yourself to that, you may as well get a job flipping burgers instead.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Hello
I m developing a window application. I m doing diferent tasks against different events using multi-threading. Against 1 thread , I m enabling the timer, and against its function I m performing 1 task, but it is not working i.e it is not executing the timer function. if I put all the code against some button rather than within thread , then it works well.
plz tell me how could I use the Timer within the thread.
here is my Code.
private void Start_Click(object sender, EventArgs e)
{
pthrd = new Thread(new ThreadStart(Thrd1));
pthrd .Start();
}
void Thrd1()
{
MessageBox.Show("Thread Start");
timer1.Enabled = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
MessageBox.Show("Start Grabbing");
Calculate();
}
Shanzay
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DeepOceans,
I am not sure if this is correct, but i think its because the thread does the work and then exits, thus the timer will be told to start but then instantly quick, thus it never ticks.
Since i am not sure if my thinking is correct, i dont have a solution other than to keep the thread alive.
Whats the reason you want to run a Timer in the background anyways?
Regards,
Gareth.
(FKA gareth111)
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I m using Timer to enable my function for grabbing the video frames on every tick. yes u might b right that thread does its work and exits but in my case it never actually goes in the function (i checked by printing a messegeBox). i already gave the code. plz try it and tell me more specific reason.
Thanku so much !
Shanzay
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Your thread function should look something like this:
private void Thrd1()
{
while (true)
{
Thread.Sleep(1000);
Calculate();
}
}
private void Calculate()
{
}
BTW "Thrd1" is a crappy function name.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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The Timer uses a thread, so you needn't use your own as well.
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But using a thread is more programmerish.
The Timer class is for lazy people.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Certainly, but using both at once is nuts.
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Agreed.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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how to serialize a windows form control (binay or xml serialization) ?
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[Serializable]
private System.Windows.Forms.Button button1;
at the form.designer.cs code..
modified on Saturday, January 17, 2009 8:11 AM
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Hi all!
I'm having a problem with checkedlistbox.
At one point I want to update the data associated with the selected item, which is a struct I defined. When I try to do this I get an error:
"Specified argument was out of the range of valid values.Parameter name: '-1'is not a valid value for 'index'"
And then the last item in the list is removed.
CheckedListBoxItem temp = (CheckedListBoxItem)clbFormats.Items[clbFormats.SelectedIndex];
temp.Update = chkUpdate.Checked;
clbFormats.Items[clbFormats.SelectedIndex] = temp;
The thing is that clbFormats.SelectedIndex isn't -1, it's 0 if I add it to the watch window. And if I do that same with clbFormats.Items[clbFormats.SelectedIndex] it also shows the correct, valid values.
And what's even stranger is that this code works if I compile it in VS2005, unfortunately I have to use VS2003.
/Gadjuka
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