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todd.01011101 wrote: I don't expect *too much* churn of the plug-ins, (1, maybe 2 in a day)
Every day?
Or when it occurs every 6 months it might involve 1/2?
If the first then perhaps you should look into some entirely different options such as scripting.
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Yes, I meant that the maximum would be 1/2 in a day, but maybe once every few months.
Certainly not 1 or 2 every day.
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You could look at writing dynamic assemblies or methods Using Reflection Emit
"You get that on the big jobs."
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Ok, but how would you know what code to create dynamically? You would still need a mechanism to define the logic so it could be created dynamically. Sorry, not a very good suggestion for the problem, there are far easier methods that are more performant.
I know the language. I've read a book. - _Madmatt
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I have used Castle Windsor[^] to accomplish something similar. There are several other .NET inversion of control containers that may also work (StructureMap, Spring.Net, Ninject, etc.) but I don't have any experience with them.
Regards,
Eric
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Given your rate, 1/2 every 6 months, I doubt a generic system is going to provide an advantage.
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What about a scripting engine for the business system/ part of the business system. If you require functionality to be dynamic. It could be scripted and changed on the fly.
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This is what I have used with one of my programs.
1: Have a page on the Internet with the latest version number.
2: When your application loads, read the Internet file version and if it is grater than your application then....
3. You can give the user the option to upgrade now or upgrade now without prompting the user.
4: Download and run a temp upgrade.exe program. Then quit your main application.
5: The upgrade.exe will download the new version (Using the same file names and locations as the old version)
6: Run the (new) main application.
7: End the upgrade.exe program.
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Hi everyone.
Long story short I am working on a replacment shell in VB.net, and while i hav most of it sorted i am struggeling with one section.
The system tray. does anyone know how to (or can point me at a site that can help), make a system tray in VB.net (any of the .net languages is fine)
Thanks
Daniel
Edit
I forgot to mention that I know that the class that handels this in explorer.exe is System_trywnd
Hope that helps
modified on Tuesday, June 7, 2011 9:30 AM
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no. I am trying to write a replacment windows shell and I have got to the stage where I need to replicate the system tray. The point where notify icons are placed. Sorry my orrigional post obviously wasnt verry clear on that.
Tanks anyway
daniel
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Yeah, so write an implementation of NotifyIcon for your shell as I think the previous poster intended  Basically, the interface for NotifyIcon tells you exactly which functionality is needed and how it is implemented. Basically you can use the same interface and supply a new implementation for it specific to your shell.
Edit:
On the implementation, basically what you need is a toolbar which can display icons, has customized menu's for each icon, has tooltips, and perhaps one or two more features. Here too, the NotifyIcon class gives great amounts of information how to implement each feature.
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I am trying to implement a simply task that appears to be amazingly hard to accomplish in .Net: Sorting a column in a datasource bound control (e.g. DataGridView), not based on the underlying values (i.e. simple string comparison on the values) but on some custom rule that I want to define.
I have a DataGridView that is bound to a Bindingsource which in turn is (via Dataview, .Net internal stuff...) bound to a Datatable. This is plain vanilla stuff, out of the box. If I was happy with the default sort behavior, i.e. sorting columns by the values in DataTable, everything would be easy, even automatic.
However, some of the contents in the Datatable is not in a user-friendly format, so it must be formatted for display in the datagridview (e.g. by overriding the CellFormatting event). If I now sort the control by that column, the rows will be sorted by the underlying values, and not by the displayed text, which is bad.
I cannot use the Sort() function nor the IComparer overwrite of the DataGridView since I am working in databound mode. How in the world then can I intercept the sorting mechanism and tell the DataGridView how to sort this column properly?
It strikes me as odd that the standard data source - binding source - control model in .Net appears to have no provision at all for custom sorting! What is even odder is that a primary reason for the whole concept of a BindingSource is just sorting and filtering!
There must be an easier way than writing 1000s of lines of code to create my own DataView or IBindingList derived class that will allow this kind of customization, as recommended in various articles. This seems such a common scenario that I can't believe there is a more elegant way...
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AFAIK you must apply your (custom) sort on the underlying data structure, not the DGV itself. So set the DGV to programmatic sorting, handle the cell click event (checking for row<0 and getting the column index), and sort your DataTable or whatever is underneath the DGV.
Luc Pattyn [My Articles] Nil Volentibus Arduum
The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Please use <PRE> tags for code snippets, they improve readability. CP Vanity has been updated to V2.3
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I'm not sure I understand the difference between these two events (Form.Deactivate and Form.Leave). Could someone enlighten me please?
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Occurs when the form loses focus and is no longer the active form. (When the title-bar of the form changes from blue to gray)
Occurs when the input focus leaves the control. (When the cursor focusses another control/window)
Bastard Programmer from Hell 
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Alright thanks, but isn't that pretty much the same thing? I'm talking specifically about a form, not just any control. So "when the cursor focusses another form", isn't that precisely when the form's title-bar changes from blue to grey?
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Yup. The active form is usually the one with input-focus (fails sometime when apps modify the z-order). Hence, if the input-focus moves to a different form, the new form will should be activated. Even if the validation would fail and the focus retained - the active form would be the one with focus.
Bastard Programmer from Hell
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OK, thanks. So, am I correct that, as regards Forms, there is no difference between Form.Deactivate and Form.Leave?
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Well, there is, otherwise one of both would be redundant. Imagine you open a form, has focus. Now I click once on a tray-icon. Just tried it, and the form raises the Deactivate event, not the Leave event; the form still has the input-focus (for your app, and will continue there when it's activated again).
Bastard Programmer from Hell
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No, it's not. It's entirely possible to have a form deactived, but the focus never really leaves the confines of the form. I know, it's rare, but it happens...
It's also possible to have the focus leave the form, but never deactivate the form by clicking on someone outside of it.
What you do with those events is up to you.
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Hay Guys,
I'm working on one live project which is web based application. And We Are Using Business Logic Using Multiple Class & Fatch The Record In Front End From Back-End DB2. Now I Need To display Multiple Records.
In One Gridview, I Need To To Display One More Gridview Control By MasterGrid Reff. Through Identification By Unique Key. Using Business Logic(Classes)
Thank You For Consideration.
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Did the answer in the thread below not help, or did I misinterpret your question?
Bastard Programmer from Hell
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No It Was Help-Full But It Was Related Using By DataSourse, & I Need Answer Related With Using Business Logic (a multiple classes). & Database Was DB2.
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