I am making an user interface from windows forms (c#).In my form there are many buttons named enable (for enable each textbox).What i need to do here is when the button relevant to textbox is clicked enable the textbox.(they are not in a groupBox). Without manually coding in each button click's method how can i do this in a programmatic way
Assuming you are trying to bind a textBox's enable property to a button, I would recommend you yo build a simple custom userConrol. Inside that control you will be able to bind the logic of the button to the TextBox. You can then add any number of that specific UserControl to your application and it will automaticly bind your button's logic to the textBox.
Related
I have the next situation:
there is a client app with a Form
the Form contains a few TabControl's
there are different controls on TabPage's of TabControl's
when the user clicks on any control, I need to activate the TabPage that is a parent of a control. For that I use a TabPage Enter event
when the TabPage gets activated, I need to make request to the server app, and I put focus to a hidden TextBox to disable UI
The problem is, when I click on a Button on another TabPage, in TabPage.Enter event handler I take focus to my hidden TextBox, and it seems like Button click event doesn't have enough time to be processed. When I put timer and handle TabPage.Enter event after 100 ms, the Button click event seems to be fired well. Same thing happens to all the controls: CheckBox doesn't get checked, RadioButton too. I wouldn't like to use timer, as that is not a stable solution.
Any ideas how could I make TabPage to process all mouse events before I take focus to hidden TextBox? I tried to use Application.DoEvents(), but that didn't help.
You are using a wrong event for a wrong control for what you are trying to do.
Enter event for TabPage is going to be fired when that page becomes an active control of the current form which might not happen under certain conditions. Instead, you need to use Selecting or Selected event of TabControl, depending on whether you want to cancel switching to a different tab or not (see TabControlCancelEventArgs parameter of Selecting event). In your case, Selecting event would be more appropriate since it won't allow switching to a selected tab until event is complete (unless you're doing an asynchronous request to the server). Additionally, you may no longer need to use the hidden TextBox.
UPDATE
Regarding comments to OP, when you have 2 (or more) TabControls on a form and you want to get notified when you press a button in any tab of a different TabControl, you can use Enter event for TabControl. Use a global variable to store which TabControl was activated in the Enter event and then send server request for a currently active tab of that activate TabControl.
If this doesn't work for your scenario, then you need to carefully examine your workflow and see if it can be improved in relation to what you want to accomplish.
I have a user control that consists of some textboxes and checkboxes. Once the user is finished filling the first one, they should be able to add one more form by clicking an "add another record" link button.
How can I repeat this usercontrol as the user clicks?
I am supposed to use C# only.
So, we are talking of UserControl where your fields are located (I mean, that this is a one class inherited from UserControl or Control. )
There are a lot of ways to do it. But, I think, to be mode 'code concise' is to use FlowLayoutPanel
a) Create this panel. (through visual designer i.e.)
b) When user clicks, create your control
c) add your control to layout panel.
var myControl = new MyControlWithForm();
flowLayoutPanel1.Controls.Add(myControl);
One could use flowLayoutPanel1.Controls array to process all filled forms afterwards.
I have a TabControl with two tabs. One tab has a list of stores and the other has a list of employees. On the store tab I have a button that displays all employees of the store; to do that, I want to switch to the other tab and invoke a showEmployeesFromStore(store_id store) method from that tab's User Control. How would I do that?
You've got the wrong mental model. Just because the user control isn't visible on the TabControl doesn't mean that the code is invisible as well. Just call the control's method in your code, it needs to be public of course. Then change the tab control's SelectedIndex property to switch the active tab page.
The button should not be part of the 1st user control. Actually it is better not to use a button but to just trigger an event when the user selects another store.
I would expose an event on the store user control for SelectedStoreChanged or something to that effect. Pass back the newly selected store_id in the event delegate.
Subscribe to that event with your form. When the event fires, it is the form's job to decide with to do with that information. In this case, have it pull out the store_id from the store UserControl's SelectedStoreChanged event and pass it in to EmployeeUserControl.showEmployeesFromStore(store_id store)
Keep your controls ignorant of each other. Let the owner of the controls decide how to react to whatever events are raised by the controls. You'll sleep better with dreams of increased usability, better separation of subject areas, and more fewer working weekends due to untangling odd control flow... ;o)
Just realized I missed a detail. The button you're talking about should be on the form itself and not any of the user controls, assuming you don't want it to just update in real time using eventing described above. On button click, the form should go check StoreUserControl.SelectedStoreID() and pass the result to EmployeeUserControl.showEmployeesFromStore()
Hello I am developing an application in C#, my application has 1 tabcontrol (5tabpages), what I want to do is disable the next tabPage , and all of them and the button next and before until all the current tabPage is filled in all fields. Very apreciated the answers
Bye
Is this a Windows Forms app? If so, try attaching a handler to the TextChanged event of each TextBox on the tab control. When one changes, examine them all, and if they all have data to your satisfaction, enable the next tab and the Next button.
In ASP.NET, you can do something similar with JavaScript using the OnChange client-side event.
Is there any simple way to make a method that gets called whenever the user clicks out (or changes focus in some other way) from a text box in C#? I'm not really familiar with the way events are handled in C# - I rely on double-clicking a control to automatically generate the btn_Button_Click method.
Thanks!
Try Control.OnLostFocus, which occurs whenever the control loses focus.
You can get a list of events in the properties window for the control. If its not already visible, display the properties window from the view menu. Then select the control you want to add an event to, click the lightning bolt in the properties window (shows events) and add the event you need.