如何通过valuemember c＃从列表框中获取DisplayMemeber值？

Question

I have a listBox, something like this:

ID ClientName

1. Michael
2. Steve
3. Smith

Now, I know the ID of the client , how do i get the DisplayMember of it ?

Answer 1

转换为DataRowView并转换为按索引选择客户端名称列，即1。

String ClientName = (((DataRowView) listBox1.SelectedItem).Row[1]).ToString();

Answer 2

You could try this code. the example is written if the DataSource of the Listbox is DataTable , but if it is something else, try to see of what type is the object in Items property of the ListBox .

(Note that I don't like using break statement but this was the quickest way)

string str = string.Empty;
foreach (DataRowView drv in listBox1.Items)
{
       int lvID = int.Parse(drv.Row[listBox1.ValueMember].ToString());
       if (lvID == 5)
       {
             str = drv.Row[listBox1.DisplayMember].ToString();
             break;
       }
}

Answer 3

var t = from list in USStates where te.ShortName == textBox1.Text select te.LongName.ToString();     

foreach(String st in t)
 {
   MessageBox.Show(st);   
}

where USStates is Generic List and TextBox1.text contains the value of the id.Considering your listbox uses Generic list as DataSource.

Answer 4

There is a much easier solution. Especially if you are building the DataSource, populating it, then releasing the source. Use the Items list to create a DataRowView of the item currently selected. Then just pull the right index. 0 will give you the "value member" and 1 will give you the "display member".

DataRowView thisLine = cbTrackerFormList.Items[cbTrackerFormList.SelectedIndex] as DataRowView;