CODEWITHSUNDEEP
c#.netwpfcombobox
TheManofSpiel
TheManofSpiel

Reputation: 33

C# ComboBox items from an array

I've searched for answers to this for a while, but none seem to match my problem exactly.

I have a window in which I've created a ComboBox. Then in my code, I've created an array:

public string[] myList = new[] { "Item 1", "Item 2" };

Now I want to make those items the options in the ComboBox dropdown. Most of what I found suggests using DataSource and DataBind, but only DataContext is actually available.

I'm sure there's some previous step I'm missing, but I'm still pretty new to this so I'm not sure what it is.

Upvotes: 1

Views: 3389

Answers (2)

Akash Kool
Akash Kool

Reputation: 60

try putting ID's with mapped to each member of the string list. It will work.

Upvotes: 0

Racil Hilan
Racil Hilan

Reputation: 25341

Those answers that you found are for Winforms and you seem to be using WPF. They both have a ComboBox control, but they are actually a completely different controls with different properties. Try this (let's say you call it ComboBox1):

ComboBox1.ItemsSource = myList;

However, you usually need IDs for your items so you can use them when the user selects an item. To do that, you need to bind the ComboBox to a Dictionary instead of a List, like this:

var data = new Dictionary<int, string>{
           {100, "Eggplant"},
           {102, "Onion"},
           {300, "Potato"},
           {105, "Tomato"},
           {200, "Zuccini"}
};
ComboBox1.ItemsSource = data;
ComboBox1.DisplayMemberPath = "Value";
ComboBox1.SelectedValuePath = "Key";

Now when a user selects "Onion" for example, you will get 102 by using:

int selected = (int)ComboBox1.SelectedValue;

Note: Your ComboBox1 in XAML must have no items, otherwise you will get an error.

If you prefer to keep the items in XAML instead of code-behind, there is no equivalent to the SelectedValuePath property, but you can simulate it using the Tag property like this:

<ComboBox x:Name="ComboBox1" SelectedValuePath="Tag">
    <ComboBoxItem Content="Eggplant" Tag="100" />
    <ComboBoxItem Content="Onion" Tag="102" />
    <ComboBoxItem Content="Potato" Tag="300" />
    <ComboBoxItem Content="Tomato" Tag="105" />
    <ComboBoxItem Content="Zuccini" Tag="200" />
</ComboBox>

Upvotes: 4

Related Questions