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Group and Panel controls have their own Collection of controls. So once you find one of these controls you have to do a foreach() to access the controls that it holds.
You can use a recursive method to access the control you are looking for, or write code to access these special cases.
My choice would be recursion since it will handle the nesting of these special cases.
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yes u are right...how can i acess those controls that it holds...
guide me...
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Try something like this (not tested).
public void ProcessLabel ( Control.ControlCollection c )
{
foreach ( Control control in c )
{
if ( control.Controls.Count != 0 )
ProcessLabel ( control.Controls ) ;
if ( control is Label )
{
}
}
}
Call it like
ProcessLabel ( Controls )
If you need to send more parameters, modify the method but be sure you also add them to the recursive call as well.
public void ProcessLabel ( Control.ControlCollection c, bool cut, bool copy, bool paste )
{
foreach ( Control control in c )
{
if ( control.Controls.Count != 0 )
ProcessLabel ( control.Controls, cut, copy, paste ) ;
if ( control is Label )
{
}
}
}
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how to call this method...
processlabel(whichcontrol);
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You can change the signature like this to add the specific label control you are interested in processing.
public void ProcessLabel ( Control.ControlCollection c, Label label )
{ foreach ( Control control in c )
{
if ( control.Controls.Count != 0 )
ProcessLabel ( control.Controls ) ;
if ( control is Label && control.Name = label.Name )
{
label.ForeColor = Color.Red ;
}
}
}
How to call this method
ProcessLabel ( Controls, myLabel )
If you need to send more parameters, modify the method but be sure you also add them to the recursive call as well.
public void ProcessLabel ( Control.ControlCollection c,
Label label,
bool cut,
bool copy,
bool paste )
{
foreach ( Control control in c )
{
if ( control.Controls.Count != 0 )
ProcessLabel ( control.Controls, label, cut, copy, paste ) ;
if ( control is Label && control.Name = label.Name )
{
label.ForeColor = Color.Red ;
}
}
}
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I am trying But its not working...have u run this..
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The reason it fails is because you're not doing a recursive search through the child controls of the Form. You're only looking at the top level of the controls - controls are hierarchal in nature. I would definitely recommend reworking your code to be more modular or atleast rely on a different method of finding the focused control.
One method might be hooking up a listener for the focused event on every control (assuming you don't have 1000+ controls) - see this[^].
You might also consider using the clipboard to maintain the text to be copied rather than the stringbuilder you've got - see this[^].
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hi,
I am using following connection string but one ISAM error comes whenever I run the application.
Kindly check the mistake that, What am I doing wrong?
Thanx in Advance
(Riaz)
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="+ strDBPath +"stockmain.accdb;Jet OLEDB:Database Password=abc;SET EXCLUSIVE=OFF;");
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Have you bothered to actually look at the full connection string once it got assembled?
and does strDBPath end on a backslash?
Luc Pattyn [Forum Guidelines] [My Articles]
The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.
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Hi,
I have an checkedListBox with 7 items :
1. a
2. b
3. c
4. d
5. e
6. f
7. g
I want to limit the user to choose only two , after 2 checkbox are checked i want it to be impossible to let the user to check another checkbox until he unchecked at least one of the checkbox that been checked.
Example :
private void checkedListBox_YAxisOptions_ItemCheck(object sender, ItemCheckEventArgs e)
{
if (e.NewValue == CheckState.Checked && this.ThereIsToMuchCheckBox() )
{
checkedListBox_YAxisOptions.SetItemCheckState(e.Index, CheckState.Unchecked);
MessageBox.Show("You can't choose more then 4 options!");
}
}
With this code i have a problem because every time i have a memory overflow problem.
How can i do it?
modified on Wednesday, August 12, 2009 8:24 AM
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Check the selecteditems.count
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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In which event and if select one how can i stop him from select another one ?
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Hi,
Your program should handle the ItemCheck event. The ItemCheckEventArgs has three properties, CurrentValue, Index and NewValue.
NewValue is the proposed new check state of the item at Index. Typically to prevent a change of check state one would write
e.NewValue = e.CurrentValue;
[EDIT] Just seen your modified post. There is no need for SetItemCheckState which is causing the event to be fired again and again etc. Just changing the NewValue is sufficient.
Alan.
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i m doin an application in which on button click i want to browse my computer and get the file path and convert it to bytes
can any one help
This code was posted by me...
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Use the OpenFileDialog[^] to get a path then convert it to string as follows...
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
string bytes = encoding.GetBytes("filepathhere");
Life goes very fast. Tomorrow, today is already yesterday.
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Dear Developers..
I have created one class ,defined public property of type "TabControl"
when i am trying to serialize it ,it gives error on this statement written in my form closing event.
XmlSerializer xmlSerializer = new XmlSerializer(SerializedClass.GetType());
There was an error reflecting type "projectname"
System.InvalidOperationException: There was an error reflecting type 'System.Windows.Forms.TabControl'. ---> System.InvalidOperationException: Cannot serialize member
Please suggest me solution ASAP
Thanking you,
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You are not allowed to serialize controls/Forms!
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Dear Hristo,
Thanks for reply..
So how can I load the previous state of applicaton.?
I am using multiple workspace(Tabpages) and each of them contains More than one instance of any form...
i need to save this and load it on application startup..
Thanking you..
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Just define abstract settings set of your application and load/save it from
app configuration file.Here there is some useful help for you.
modified on Friday, August 14, 2009 6:58 AM
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Hi all !
When the file is closed, i just want to know the file path.
I am using as bellow :
ManagementEventWatcher mngWatch;
WqlEventQuery wqlEQ;
wqlEQ = new WqlEventQuery("SELECT * FROM Win32_ProcessStartTrace");
wqlEQ.EventClassName = "Win32_ProcessStartTrace";
mngWatch = new ManagementEventWatcher(wqlEQ);
mngWatch.EventArrived += new EventArrivedEventHandler(mngWatch_EventArrived);
mngWatch.Start();
from this event creator i can get an Exe path not a File path :
1) in the Process.MainModule name contains the Exe path of the notepad
rather i want the real path from where the file is opened
2) For more clarity if i open a file form D:\\test.txt then i when the file is closed, i want to get that FILE PATH
can some one help me how to do that.
thanks a lot
Regards
.....Jack
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You cannot get that information. Each application would have to expose its own events or other notification service to tell you that a document it was editing was closed. There is no such standard, so noone does it.
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Hi,
I am working on a windows application involving MDI forms and child forms.
The problem here is when I click an item in the menu bar I am displaying a child form. the child form should be in such a way that it is displayed inside the MDI form and should not be like popup box.I have done this as shown below.
Childfrm.TopLevel=False;
this.Panel1.Controls.Add(Childfrm);
Childfrm.show();
it's working well but the controlbox with title bar is being displayed seperately in maximised mode.I want the control box beside MDI form menu and child form title beside mdi form title. A very good example of this functionality is Edit plus.
I request any one who worked on this type of requirement to help me in solving this problem
Thanks in advance
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