|
By writing C# code that utilizes the classes in the System.Reflection namespace.
Paul Marfleet
|
|
|
|
|
Hi,
Here you have some Reflection Samples
Visit my blog at http://dotnetforeveryone.blogspot.com
|
|
|
|
|
I did this in VB and would like to do this in C# now.
UserForm1.Controls("chkbx_ManProp_" & CStr(j)).Value = True
any ideas how to convert this to C# in a windows form application?
Thanks
|
|
|
|
|
Crazy VB code, so you want to access the property of a control on another form?
If so, add a method to the forms class that will modify the control. Then you can call the method.
My current favourite word is: Waffle
Cheese is still good though.
|
|
|
|
|
I wrote the VB app in a short amount of time, so that snippet was pretty much done on the fly ;o
the property of the control(s) that I want to access is within the same form.
Unfortunately, there isn't a direct correlation of VB and C# methods so I'm not sure where to look.
I was thinking about something like this:
start a loop
Application.getControlbyName("object_name_as_string" & integer_variable).value = false
integer_variable++;
end loop
in essance what this should do is programmatically loop through all the controls with similar naming conventions, and set its member value to false.
Any suggestions / alternate ideas on how to accomplish this in c#???
Thanks in advance
Humble.
|
|
|
|
|
ControlName.PropertyName = NewValue;
Not sure why you want to loop through the control list when the above template should work within the same form.
Of course, you could do the looping but it takes a bit more skill and would look something like the code below. I would stick with The Undefeated's advice.
public static Control FindControl(Control root, string nameToFind)
{
Control retval = null;
foreach (Control c in root.Controls)
{
if (c.Name == NameToFind)
{
retval = c;
break;
}
retval = FindControl(c, nameToFind);
if (retval != null)
{
break;
}
}
return retval;
}
|
|
|
|
|
Heh. Agreed that it's easier just to assign a value to a control.
However, I've got 20 controls that need to be assigned the same value.
I declared the control names with the express notion that I would be able to loop through all of them and assign with the same value.
I guess I can modularize it and put it in a method, but I'm slightly surprised I"m not able to do what I could do with VBA code!
:P
|
|
|
|
|
That is because it is inefficient. There is little reason to loop through all controls everytime you want to update a specific one.
VB tends to save lines of code not cpu cycles.
|
|
|
|
|
Hi,
do any one know if
ConnectedClientSocket.Send is sending while we are working on Server
On Client application, through Begin Send and Receive (async calls), it's not getting any data.
What could be the reason? any solution?
thanks
Determination and faith are the only keys !
|
|
|
|
|
I'm programming in C# but I thought this would be a VB question
i'm not sure how to do this, but assume I've got a text box that has a properties.
The properties dynamically change throughout the program, upon request, is there a method through system way to get the text box (or any checkbox, radio button group, label etc.) to change back to its original state?
|
|
|
|
|
No. The controls do not keep a record of their initial state are application startup.
You have to write a method that will reset all the properties of a control to a state that you want. Call this method when you want to reset the textbox.
|
|
|
|
|
Hi,
alternatively you can hide the original Control, then call an "init" method, which
clones the Control, adds it to its parents.Controls and makes it visible.
When you want the original back, remove the Clone, and call "init" again.
So it is always a clone that is shown, gets modified, and the original is never touched.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
|
|
|
|
|
Though I've never had to reset controls back to a known state, (I tend to destroy and create entire forms instead) that's a trick I'll have to put in the bag.
|
|
|
|
|
I made sure my bag of tricks is an ArrayList, so it accepts all kinds of objects,
and is only limited by total amount of memory available. 
Come to think of it, it more resembles a Heap, difficult to enumerate...
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
|
|
|
|
|
Yeah, same with mine. Well, not really a digital heap, but a huge pile of sticky notes. 
|
|
|
|
|
hi,
i have a windows project in C# that uses some DLL i wrote in different projects.
i want to make this application to run from the web page on the local computer(ActiveX,OCX).
how can i do it?
thanks,
Samy
|
|
|
|
|
I need to read 4 hexadecimal chars from a textbox and put them into a Uint
how can I do that?
BiG RaLpH
|
|
|
|
|
|
I need to see if I can change the hex 2.
ie:
textbox2.text = "1212abab"
the uint returned must be 1212 and another abab.
BiG RaLpH
|
|
|
|
|
Hi,
you could:
1. use long.TryParse() and then split the long in upper and lower halfs.
2. split the string in two parts, and use int.TryParse() on each of them.
The second method may be more difficult since it may have to cope with varying string lengths
when leading zeroes are omitted in the string.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
|
|
|
|
|
You can use
uint num = Convert.ToUInt16(textBox1.Text, 16);
If the textbox contains more than 4 letters and if you want to change each 4 letters in to their uint value, you should first write a text splitter which is very simple with string.substring() function.
Best Regards
Zafer
|
|
|
|
|
I have an application that i have deployed using winforms. I have many users using this application and it works for every1 except one person!!!! I cannot isolate the problem. She gets the following error:
EventType:clr20r3
P1: admin.exe
P2:1.0.0.0
P3:464caceb
P4:admin
P5:1.0.0.0
P6: 464caceb
P7:42
P8:4c
P9:system.nullreferenceexception
I want a line number or something that give me a damn hint on where the null exception is occuring. I received this info from the event viewer. HEELLPP!!!
|
|
|
|
|
After doing a quick search on google, and selected the top result, I got This result[^]. See if that helps you out.
I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")
|
|
|
|
|
What you can do is set an application level thread exception handler. This is the top level event exception handler that is capable of catching exceptions. Then, you can simply extract the stack trace of the error that caused this.
Deja View - the feeling that you've seen this post before.
|
|
|
|
|
I have a gridview and a dataset. When I start my application I see the results in my gridview. When I clic on edit and chanche some value and click on update it wil give me this error:
ObjectDataSource 'ObjectDataSourcePersoon' could not find a non-generic method 'Update' that has parameters: naam, tussenvoegsel, achternaam, adres, woonplaats, telefoonnummer, original_id, Original_naam, Original_tussenvoegsel, Original_achternaam, Original_adres, Original_woonplaats, Original_telefoonnummer.
check here my dataset update method
Does someone know whats the problem??
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
