Menu
How to SELECT a drop down list item by value programatically in C#.NET?
708
A dropdown is represented by <select> tag and the options are represented by <option> tag. To select an option with its value we have to use the selectByValue method and pass the value attribute of the option that we want to select as a parameter to that method.
You can set the SelectedValue to the value you want to select. If you already have selected item then you should clear the selection otherwise you would get "Cannot have multiple items selected in a DropDownList" error. dropdownlist. ClearSelection(); dropdownlist.
Select Multiple Items From Drop Down List. Instead of limiting the drop down list to a single selection, you can use a bit of programming, combined with the data validation list, and allow multiple selections.
The DropDownList control is a web server element that creates the drop-down menu and lets users select a single item from various options. You can add any number of items to the DropDownList. Almost all web pages contain a drop-down list, but it is mostly present in registration forms or sign-in pages.
If you know that the dropdownlist contains the value you're looking to select, use:
ddl.SelectedValue = "2"; If you're not sure if the value exists, use (or you'll get a null reference exception):
ListItem selectedListItem = ddl.Items.FindByValue("2"); if (selectedListItem != null) { selectedListItem.Selected = true; } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
