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how can i access control (like button) in one form(form 1)
from another from(form 2)..
i want to set the enabled property of this control rom form 2
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Set the "Modifiers" property of this control to public (or set the button access level to public by your self).
After that you will be able to see that control in the intelisense from another form.
Enjoy
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thx
but still cant access enabled property
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Errm
do:
public static System.Windows.Forms.Button YourButton;
then change all 'this.YourButton' to just 'YourButton' (without the 'this.')
Then you can just access the button from anywhere, works for me, well i've never done it for a button but, im sure it'll be fine.
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m.m._2007 wrote: how can i access control (like button) in one form(form 1)
from another from(form 2)..
i want to set the enabled property of this control rom form 2
If you have a webForm1 page with one button on it you could do this
webForm1 sf = new webForm1();
sf.Controls["button"].enabled=false;
sf.Show();
When the form opens the button would be disabled. Of course you need to know the controls name, or index.
I hope this was usefull
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HI,
You can just create a function in the first form and declare it as public. In the body of this function you can right the property changes of the button that u wish. And just call this function from the second form.
This will do i think,
Jamil Abou Khalil
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I am fairly new to C# and .NET, so please bear with me. I have an old DLL, written by a 3rd party, so not sure if its vb6 or C or what. I need the ability to do late binding on this dll, set up to 300 properties contained in the dll, and then call the methods it exposes. I have read a bit on reflection, but not sure if this works with setting properties of an object or not. Has anyone done this before that could breifly explain what I would need to do, or can anyone point me in the right direction to read up on this?
Thank You.
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First, determine whether it's a COM dll. If it is, just go into your Visual Studio project, right-click on the References folder, and Add Reference to the the COM dll.
What's happening under the hood is that the tlbimp tool included in the .NET SDK is generating a .NET wrapper over your COM dll automagically.
Now, if it's not a COM dll, if it's just a standard C/C++ dynamic link library, you have 2 options. One is to use P/Invoke to call functions in the dll. If you want to do that, see this page[^].
And the last option is more work, but ultimately faster and cleaner than using P/Invoke: build a seperate C++/CLI (managed C++) dll that talks to the old C dll, and exposes its functionality through .NET functions. Your C# code can talk to the C++/CLI dll natively, as if it were written in C#. If you want to do that, look at this article[^].
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I have added a reference to the dll, and that works fine. However, I need to do late binding on the dll. The possibility exists that when the application is installed, the dll may not be present. If I have a reference to the dll, and it is not there, will the application error out if I dont use the dll?
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No, the application won't error out because what you're *really* done is create a new .NET wrapper dll around the COM dll. Your application will be distributed with the .NET wrapper dll, and your application will function fine. However, if you call into the .NET wrapper dll, which in turn tries to call into the COM dll, then that function call will fail with an exception.
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Is it possible to open an external application (for example, Adobe) inside of a form in my application in C#? The reason is I would like to display a certain file type that is not supported by PictureBox. An example would be to open Minesweeper in my form, not externally as it normally opens. I hope I'm being clear on what I'm after. Imagine a PictureBox type of control that opens applications, that's what I want.
Thanks in advance to any help you can offer.
John
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So like, the equivelant of an IFrame in HTML? Hmm, i'll have to go check this out...
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i don't know weather you can open all applications in your form but you can open some like adobe
look here[^]
to open out side your bounds you can use "process"
It is Good to be Important but!
it is more Important to be Good
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The DataGrid class has a readonly property for the grid as a whole, and the DataColumn class has one as well, but is there a way to set read only by rows (or even individual cells)?
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Looking for a workaround  ......I'm trying to update the settings file for a C# class library at runtime. Specifically, I'm trying to update the connectionstring setting for my typed datasets.
Microsoft officially doesn't support this functionality in C# (click here)
"Because there is no configuration file model for class libraries, application settings do not apply for Class Library projects. The exception is a Visual Studio Tools for Office DLL project, which can have a configuration file."
I could create a custom config file but how do I get my typed datasets to reference it??
Thanks,
Kevin
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you can always create an XmlDocument object and load up the settings file and make the changes manually. For web applications I know there's a way to change the config file but I'm not sure if it will work in your case. Here's how I did it for my web application:
<br />
Configuration config = ConfigurationManager.OpenExeConfiguration(""); <br />
ConfigurationSection section = config.Sections["connectionStrings"];<br />
<br />
<br />
config.Save();<br />
and that's it
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Thanks for the reply, but that isn't really what I'm looking for. I'm familiar with web configs and the configuration manager. My problem relates to C# class libraries. They don't allow the settings file to be modified at runtime and my typed datasets use the application settings file to determine the connection string.
I would like to dynamically set the connection string property based on the application environment at runtime.
Cheers.
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need to control the band of net (ethernet) plate, to control "UPLOAD" and "DOWNLOAD". It would like to know if somebody already made something similar. Debtor
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Hiiii everyone.
I have a problem with datagrids and queries.
I'm making a program where the user specify the columns he would like to view in the datagrid.When the program runs for the first time and the user type his columns(ex. all of them in the table) it's ok. but when choosing other columns,the non-chosen columns' values are set to null but not disappeared from the datagrid.
I want them to be disappeared and only the selected columns are shown, how can I do this??
Thanks for ur answer .
Calma
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Hi,
I want to khnow the Key codes of both "Enter" buttens one is at alphabetside and other is numpad side. Also I didn't find the key code/name of properties key and all num pad keys i.e /,*,-,+,.,enter is remaining. Please tell me Key.NAMES or Key codes of that.
Thanks
Syed Shahid Hussain
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Syed Shahid Hussain wrote: I want to khnow the Key codes
They hide that information in the documentation[^]
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
Keys key = e.KeyCode;
Debug.WriteLine(String.Format("KEY: {0}", key));
}
led mike
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Except that the documentation/code you provided doesn't give all of what he asked for. The two enter keys have the same value in that enumeration.
I wrote a keyboard interrupt handler back in the dos days, the hardware itself returns different scancodes. The Win32 KeyboardHookStruct contains a scancode member, so if you're using keyboard hooking you might be able to get different values from that.
Hooking is not somehting I'd recomend for a beginner programmer to attempt however.
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dan neely wrote: The two enter keys have the same value in that enumeration.
 if it is true then how i can find out key code. (not an expert programmer) Can u help me further. Please.
thanks
Syed Shahid Hussain
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Don't cross post.
Without hooking the keyboard driver and getting the scan code, there is no way your code will ever be able to tell the difference. Your normal C# code never gets the scan codes, it gets virtual key codes, which are in the Keys enumeration.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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You can find working hooking examples from google. Just be careful not to have any unsaved data in other apps. If you mess something up in the example and leave the standard windows key handlers disconnected you'll have to reboot and forceclose all your other apps.
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