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I have an assignment to traverse a parent-child chain of controls that are arranged so that the master parent has one child, and then that child has a child, and then that child has one child, and then that child has one child. In other words, the arrangement is similar to that of a russian doll, where there is a hollow man, which contains another hollow man, and so on until you reach the center. Now the code, the code is all incorporated inside of a single click event. Would it be similar to?
private int ctrl_click(object sender, EventArgs e)
{
Control ctrl_hold;
int intControlCounter = 1;
while (ctrl.HasChildren == true)
{
if (ctrl.HasChildren)
{
intControlCounter += 1;
ctrl_hold = ctrl;
}
else
{
exit while;
}
}
}
When there is a control arranged in a chain of parent-child relationships, even if there were code such as: ctrl.HasChildren.count, it would only return a result of 1. How would I traverse the chain of controls arranged in such a way and come back with a result of the number of controls? Would REALLY APPRECIATE some assistance, as Microsoft did not document the parent-child relationship code very well.
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You have to recursively search through alle controls.
Some code (untested)
<br />
public int GetCount(Control control) {<br />
int count = 0;<br />
foreach (Control childControl in control) {<br />
count += GetCount(childControl);<br />
}<br />
return count + 1;
}<br />
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Thank you, Robert ! ! ! Your sample code got me pointed in a totally different direction, that enabled me to solve the problem. I appreciate it.
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Hi all, I found this article in CodeProject:
http://www.codeproject.com/csharp/FTwin32Timers.asp[^]
I was wondering if anyone else could back this up (i.e. encoutered the problem), and the most important thing:
In the article, it says that the "other" timers DIDN'T work. Does anyone understand which timers the author is talking about? Maybe System.Threading.Timer objects? Or maybe something else?
Thanks.
/=/=/=/= Sagmam =\=\=\=\
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sagmam wrote:
I was wondering if anyone else could back this up (i.e. encoutered the problem)
I can't confirm the problem. However, the article refers to the .NET Framework 1.0 and there has been a Service Pack release after the article was published (so, maybe there has been a bug in one/all of the timer classes, however, there are no timer bugs mentioned in the lists of bugs).
sagmam wrote:
Does anyone understand which timers the author is talking about?
I don't know which one the author meant but there are three timer classes in the .NET Framework 1.1 (see also Comparing the Timer Classes in the .NET Framework Class Library[^]):
System.Threading.Timer[^]
System.Timers.Timer[^]
System.Windows.Forms.Timer[^]
Best regards
Dennis
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Thanks Dennis.
I know about these three, and I read the article, however, it doesn't talk about any issues with them - only about how to use them, etc. Apparently, the article I was talking about claims that there are issues with one or more of these classes, and I don't know which or why....
Take care,
/=/=/=/= Sagmam =\=\=\=\
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Hello all,
I bind a combobox with columne in database.but i need to display first selection blank.
Thanks
hay
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Steps
1) Add a blank space to combobox items
Ex: cboProducts.Items.Add("");
2) Use a datareader to fetch the required column data from the database.
3) Then loop through the datareader data using Read() method, while doing this add required column values to the items of Combobox.
I hope This will do.
If you directly bind the combobox using Datasource and Displaymember properties You may not get blank line.
- Send me if you have any suggetions or other work arounds
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Yes you can. Ive only made a quick view at the article but i think I should be easily done with it. The method SaveToDocumentFormat receives an object to be persisted. You can just pass an array of objects (e.g. an array of customers) into the method and it should serialize them all into one file. Even an ArrayList should work.
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How can I dynamically install Microsoft loopback adapter programatically in C#, if so, can i have multi-instances of it?
and what would be the way to configure its IP address, media type, etc. through run-time.
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I have a dataset which contain only one DataTable. In my Business logic, I am selecting one data row from the data table which is there in my dataset.
When I try to modify the data in data row it is modifying successfully. like wise I am getting all required result for consecutive updation,add,deletion etc.
I can able see the changes that I made in dataset. And it reflects in user interface. The problem is , when I try to update data back to database it execute the Update method successfully. If I try to see the data in database it doesn't shows any updated data. I am using Asacommandbuilder to get all relavent command while passing a Sellect command.
I am using Sybase as database(Ianywhere Client).
No error no updation. Really I am getting mad. Any Idea ?
Sreejith Nair
[ My Articles ]
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I am displaying images as thumbnails from a folder on a panel. On click of any of the images i need the name of the image file being clicked. Here is how i am displaying the images:
string [] fileEntries = Directory.GetFiles(utils.imgfolderpath);
int j=fileEntries.Length;
for(int i=0; i
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Hi,
when you draw your images remember their locations. In this case I would hold a Rectangle array to store this information. E.g:
(some field)
<br />
Rectangle[] rects = new Rectangle[NrOfImages];<br />
(in the loop)
<br />
rects[i] = new Rectangle(x, y, width, height);<br />
To determine the clicked image:
<br />
int resultIndex = -1;<br />
for (int i = 0; i < rects.Length; i++) {<br />
if (Rects.Contains(new Point(MouseX, MouseY)) {<br />
resultIndex = i;<br />
break;<br />
}<br />
}<br />
if (i >= 0) <br />
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Thanks a lot for the help Robert.
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Can I remote an abstract class with remoting feature of C#.
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Hey Everyone,
I am new to C#. I am writing a small application. This application will read a method name from a flat file. Then call the method in another class library with the same name as the one read.
Example, I have a method "add" in the flat file. and the other library is "Math", then my aplpication should call "Math.add", the other library may change and so the flat file.
This is something similar to dlsym that I used in my c/c++ programs on unix. Can something similar be done here.
Thanks in advance,
Regards,
JItesh
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Hey thanks Daniel.
Regards,
Jitesh
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Hi , Please I need help as soon as possible
how can I add CheckBox Column to a dataGrid without mapping it to the dataset
I want to retrieve a column from the dataset and beside him a Checkbox Column
that he checks then I want to retrive the checked records according to the first column...
Thanks So Much
Really I need it quickly..
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Thanks A lot
but I'm so sorry , I didn't mention that I need a dataGrid of Windows Forms ,not web forms...any how thanx for help if u still know the answer , please reply me.
Thank you again.
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