Technically, there are no combo boxes in HTML, because the <SELECT> can’t be typed into. See the Wikipedia article on Combo Box (emphasis mine): A combo box is a commonly-used graphical user interface widget. It is a combination of a drop-down list or list box and a single-line textbox, allowing the user to either type … Read more
For anyone who having this problem on Visual Studio 2015, try to add (if it’s not already added) System.Xaml reference to your project. Visual Studio simply fails to show reference error.
Try to use .Owner = Window.GetWindow(this)
As a side note, it is also worth noting that you will get these binding errors if you copy and paste between objects and forget to change the second typeof(Object) statement. I couldn’t figure out for a good hour why I was getting this error as everything appeared to be defined and correct. I’d moved … Read more
All Component classes implement a Disposed event. You can add an event handler for that event and clean up things in there. For example, in your UserControl you could add following method: private void OnDispose(object sender, EventArgs e) { // do stuff on dispose } And in constructor (or in Load event handler) add the … Read more
Does this work? <%= Page.User.Identity.IsAuthenticated %>
You need to get the template and locate the control by name on the templated control, something like: var template = MyList.Template; var myControl = (MyControl)template.FindName(“MyControlName”, MyList); Templates are just that: Abstract descriptions of what is to be created, the controls in templates only exist in the context of something that is being templated. Note … Read more
The following code <local:UserControl1> <Button>Click me</Button> </local:UserControl1> Means that you set UserControl1‘s Content property to be that button. This button simply replaces that UserControls1‘s markup. So all the things that you have in UserControl1.xaml are not there any more. EDIT If you want your UserControl to host some markup that will be set somewhere outside … Read more
To calculate the sum of a column in a DataTable use the DataTable.Compute method. Example of usage from the linked MSDN article: DataTable table = dataSet.Tables[“YourTableName”]; // Declare an object variable. object sumObject; sumObject = table.Compute(“Sum(Amount)”, string.Empty); Display the result in your Total Amount Label like so: lblTotalAmount.Text = sumObject.ToString();
To create a custom User Control in an easy way, you need to: Open Customization of your project (System – Customization – Customization Project) On the left side, you can see your screens in your customization. Find screen that needs or add needed screen. Go to the necessary view. Select add controls and add your … Read more