how to fetch wpf combobox selected value (key)

Question

I want to find selected value of wpf combobox here is my code:

DataTable dt = new DataTable();
dt.Columns.Add("id", typeof(string));
dt.Columns.Add("name", typeof(string));
dt.Rows.Add("ks34dsd45g6g74g", "Amisha");
dt.Rows.Add("2ks34dsd45g6g74g", "Rhitik");
dt.Rows.Add("ks34dsd45g6g74g3", "Aishwarya");
dt.Rows.Add("4ks34ds545g6g74g", "Sonam");
dt.Rows.Add("ks55dsd45g6g74g5", "Aamana");

ddl_BusinessIDNames.DataContext = dt;
ddl_BusinessIDNames.DisplayMemberPath = dt.Columns[1].ToString();
ddl_BusinessIDNames.SelectedValuePath = dt.Columns[0].ToString();

that means at run time combo box show the readable text to user ie Amisha,Rhitik,Aishwarya etc but my question is if user select "sonam" how to fetch the key of "sonam" ie "4ks34ds545g6g74g" because Convert.ToString(ddl_BusinessIDNames.SelectedValue) this code fetch the display text of combo box but what if i want to fetch the key of value "sonam"

Please suggest...

Answer 1

使用SelectedValue属性 ？

Answer 2

private void ComboBox_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
{
    label1.Content = dt.Rows[Combobox1.SelectedIndex][0];
}

Combobox1.SelectedIndex - represents selected row index of your datatable

0 - column index in datatable with id, U want to get.