call usercontrol from main window in wpf

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I am new to WPF .... I have created Five buttons present in Main Window in WPF , created five usercontrol , want to call each usercontrol for each respective button.. plz help .. already tried below code .. bt not displaying the usercontrol.. tho the WPF main form execute without any error.

C#

IssueTripSheet i = new IssueTripSheet();
//new IssueTripSheet().Loaded(i);
Grid2.Children.Clear();//Clearing Child Elements in Grid Panel
Grid2.Children.Add(i);

Posted 28-Feb-14 3:22am

Saiprasad007

Updated 28-Feb-14 5:48am

Maciej Los

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Sergey Alexandrovich Kryukov 28-Feb-14 9:58am

There is no such concept, "call a control". What exactly is your problem?
—SA

Saiprasad007 28-Feb-14 23:16pm

call usercontrol ... i mean button click on main window .... which will place usercontrol on the grid panel of main window.

Sergey Alexandrovich Kryukov 28-Feb-14 23:59pm

It all depends on the IssueTripSheet type. If this is just some arbitrary type, you won't see anything good in the grid. You can implement appropriate properties, IPropertyChanged, add binding to the grid view data template... did you care about all that? If not, what would you expect?
—SA

Saiprasad007 1-Mar-14 3:06am

without any binding, cant i directly place Usercontrol1 created by me onto Grid panel of main window with a single button click from main window... ??

Sergey Alexandrovich Kryukov 1-Mar-14 13:26pm

Not sure. You need somehow to tell each cell where to get data from. How are you going to specify that? The intended property for doing so is the data template with binding to some data. Even if such approach existed, it still would be some kind of binding, but crafted by you. Can you see the point?
—SA

Saiprasad007 1-Mar-14 23:17pm

ok.. thnk u very much for ur soln... it is realy helpful ..... just one more doubt i have..... Using button click from main window (consist of two grid 1 and 2)... can i place usercontrol1 created by me onto grid2 using button click1.

similar like this in normal way :

usercontrl i = new usercontrl();
Grid2.Children.Add(i);

which is not happening in WPF .

Sergey Alexandrovich Kryukov 1-Mar-14 23:39pm

The idea is to use exactly the same way as with any different control used in a column template. Say, you put a check box in it. The column will show check boxes. To populate it, you mention any of the properties in binding. For a check box, it is usually bool? IsChecked. But it could be anything, such as background color. Same thing with your own control. You need to bind any property of it with data; your trip data class should provide some property calculating data for the user control property...
—SA

Saiprasad007 2-Mar-14 23:48pm

I got it ... thnx... bt hw to dispose the object of usercontol from window .. since it will consume more memory ....

for eg.

usercontrl a = new usercontrl(); // this code is writen on main form button1
grid1.children.clear(); // its wrking code
grid1.children.add(a); // bt object 'a' is not getting disposed??

can u plz tell me hw to dispose the object created by me in WPF ??

Sergey Alexandrovich Kryukov 3-Mar-14 0:08am

You don't need to dispose anything. If any object needs disposal, its type implements IDisposable; there are some other, pretty rare cases when there is some disposal you need to call. In all other cases, CG does the job. Please see:
http://en.wikipedia.org/wiki/Garbage_collection_%28computer_science%29.

And you don't even need to clear all those collections. If a collection object becomes unreachable, CG will later do it.

—SA

Saiprasad007 3-Mar-14 2:05am

u mean to say dat when i click on button1 second time ... it will dispose the 1st object created by the same button1 and will create another automatically... no need to call dispose method??

Sergey Alexandrovich Kryukov 3-Mar-14 9:18am

It's not "dispose". Read the article I referenced above and you will understand. GC work by reachability.
—SA

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Sergey Alexandrovich Kryukov · Accepted Answer · 2014-03-01T07:38:00

Please see my comment to the question. No matter what you do, it still would be some kind of binding. You can either bind the control directly to your class representing your items (IssueTripSheet), and then you would need to implement this class properly, to make in "bindable". This approach is explained in my recent asnwer:
Binding arbitary class to a wpf datagrid[^].

Alternatively, you can virtualize the binding, and then you can write mapping code between a control and your data the way you want, using some binding code. This approach, in application to a grid view, is explained in this article: WPF: Data Virtualization[^].

I would suggest that you first learn the intended ways of using WPF controls, understand them well, and then try to think what else you can do with them. I understand: you probably want to find an "easy" way, which does not need learning the concepts WPF designer try to push on you. This is quite explainable. But, in many cases, moving against the main stream, the "easy way" can turn the longest one. And the main stream is binding prescribed in XAML. :-)

Good luck,

—SA