How to bind combobox in WPF in C#.Net?

Abhilash J A

10y1.1k

Hello everyone,

I have arraylist users.

How can I add combobox Zeroth position defult text?

<ComboBox ItemsSource="{Binding UserName}" Name="cmbUserName" Height="30"
VerticalAlignment="Top" Margin="10,64,614,0"/>

var logList = service.GetLogDetails();
var UserName = (from A in logList orderby A.FirstName select new UserName { Users = A.FirstName + " " + A.SurName, ID = Convert.ToInt32(A.Id) }).Distinct();
cmbUserName.Text = "Username"; /* How can I add combobox Zeroth position text? */
cmbUserName.ItemsSource = UserName;

I want to add these usernames in Combobox and set ID. Then, pass ID where combobox on change. How can I do this?

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Gupta10y ago
Accepted answer
Pass the collection to bind the combobox then fetch the id when it got selected.

//assuming usernames is a collection that contains username and id

Combobox.ItemsSource = usernames;
Combobox.DisplayMemberPath =UserName;

Thats all you have to do.
Fetching the id when it get selected
Var col = combobox.SelectedItem as Usernames;
Var id = col.id;

Further reference
http://stackoverflow.com/questions/1460612/wpf-combobox-displaymemberpath

Do let me know if it solves your problem.
Praveen Gopal9y ago
_TheList.Add("Accepted");
_TheList.Add("Not Accepted");

public List _TheList = new List();
public List TheList
{
get
{
return this._TheList;
}
set
{
this._TheList = value;
OnPropertyChanged("TheList");
}
}

XAML:
ItemSource ="{Binding TheList}" SelctedValue="{Binding SelectedItem,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
View:

public void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public event PropertyChangedEventHandler PropertyChanged;
public string selectedItem;

public string SelectedItem
{
get
{
return selectedItem;
}
set
{
this.selectedItem = value;

OnPropertyChanged("SelectedItem");
}
}

May be this helps
Amit Gupta10y ago
You have to use DisplayMemberPath
Combobox.DisplayMemberPath =UserName; //UserName = variable name

Read my previous answer carefully, it should work.

Do let me know if it solves or share your code snippet to show what are you doing.
Abhilash J A10y ago
Hello Amit Gupta,
I have tried but not showing User Name with ID, showing like this. How can I ?