I have a combobox (DropDownList style) that I filled with objects that have
two properites Display and Value.

The combobox is bound to a binding source
this.cbxStaff.DataBindings.Add("SelectedValue", this.intakesBindingSource,
"StaffID");

In the form load I have
ComboBox_Load<int>(cbxStaff, "Name_Zno", "StaffID", (new
Wits.dsLookUpTableAdapters.lutSpecialistsTableAdapter()).GetData(IsActiveOnly), UsePickOne, -1);
  intakesBindingSource.AddNew();
  cbxStaff.SelectedIndex = 1;

When the form displays the SeletedIndex is -1.
How can I set the SelectedIndex to 1.

      public static void ComboBox_Load<T>(ComboBox comboBox, string
displayColumnName, string valueColumnName, DataTable dataTable, string
FirstMemberToDisplay, T FirstValueToUse)
       {
           List<DisplayValueItem<T>> myList = new
List<DisplayValueItem<T>>();

           if (!string.IsNullOrEmpty(FirstMemberToDisplay))
               myList.Add(new DisplayValueItem<T>(FirstValueToUse,
FirstMemberToDisplay));

           int iRowCount = dataTable.Rows.Count;
           for (int i = 0; i < iRowCount; i++)
               myList.Add(new
DisplayValueItem<T>((T)dataTable.Rows[i][valueColumnName],
dataTable.Rows[i][displayColumnName].ToString()));

           comboBox.DisplayMember = "Display";
           comboBox.ValueMember = "Value";
           comboBox.DataSource = myList;
       }

  public struct  DisplayValueItem<T>
       {
           private T mValue;
           private string mDisplay;
           public DisplayValueItem(T ValueField, string DisplayField)
           {
               mValue = ValueField;
               mDisplay = DisplayField;
           }
           public T Value
           {
               get { return mValue; }
           }

           public string Display
           {
               get { return mDisplay; }
           }

           public override bool Equals(object obj)
           {
               if ((obj != null) && (obj.GetType() == this.GetType()))
               {
                   DisplayValueItem<T> objToCompare =
(DisplayValueItem<T>)obj ;
                   return mValue.Equals(objToCompare.mValue) &&
mDisplay.Equals(objToCompare.mDisplay);
               }
               else
                   return false;
           }

           public override int GetHashCode()
           {
               return mDisplay.GetHashCode() ^ mValue.GetHashCode();
           }    

       }