why in god name does this not work. I have reach the point of madness. Two way databing to a combo. This should work, and it has worked. The SelectedItem will never display the related value. If both the SelectedValue and the SelectedItem are setup as shown, the windows form will not validate and it stuck?. If only the SelectedValue is databound then it work and update fine but the current value of the related collection is never shown in the combo.

verision .730   and IPropertChangedNotify is enable in the code generation  

Code:

// 
            // manuIDComboBox
            // 
            this.manuIDComboBox.DataBindings.Add(new System.Windows.Forms.Binding("SelectedValue", this.itemBindingSource, "ManuID", true));
            this.manuIDComboBox.DataBindings.Add(new System.Windows.Forms.Binding("SelectedItem", this.itemBindingSource, "ManuID", true));
            this.manuIDComboBox.DataSource = this.manuCollectionBindingSource;
            this.manuIDComboBox.DisplayMember = "Manufacturor";
            this.manuIDComboBox.FormattingEnabled = true;
            this.manuIDComboBox.Location = new System.Drawing.Point(82, 68);
            this.manuIDComboBox.Name = "manuIDComboBox";
            this.manuIDComboBox.Size = new System.Drawing.Size(155, 21);
            this.manuIDComboBox.TabIndex = 39;
            this.manuIDComboBox.ValueMember = "ManuID";

Code:

this.txtFirstName.DataBindings.Add(new Binding("Text", _Entity, EmployeesMetadata.PropertyNames.FirstName, true, 
    DataSourceUpdateMode.OnPropertyChanged));

Code:

EmployeesCollection collection = new EmployeesCollection();

collection.Query.Select(
    collection.Query.EmployeeID,
    collection.Query.LastName,
    collection.Query.FirstName,
    collection.Query.ReportsTo);
collection.Query.OrderBy(collection.Query.EmployeeID.Ascending);
collection.Query.Load();

EmployeesCollection lookupSupv = new EmployeesCollection();

lookupSupv.Query.Select(
    lookupSupv.Query.EmployeeID,
    lookupSupv.Query.LastName,
    lookupSupv.Query.FirstName,
    " <[LastName] + ', ' + [FirstName] AS 'FullName'>");
lookupSupv.Query.OrderBy(
    lookupSupv.Query.LastName.Ascending,
    lookupSupv.Query.FirstName.Ascending);
lookupSupv.Query.Load();

this.cbReportsTo.DisplayMember = "FullName";
this.cbReportsTo.ValueMember =
  EmployeesMetadata.PropertyNames.EmployeeID;
this.cbReportsTo.DataSource = lookupSupv;

this.tbFirstName.DataBindings.Add(new Binding("Text",
  collection, EmployeesMetadata.PropertyNames.FirstName,
  true, DataSourceUpdateMode.OnPropertyChanged));
this.tbLastName.DataBindings.Add(new Binding("Text",
  collection, EmployeesMetadata.PropertyNames.LastName,
  true, DataSourceUpdateMode.OnPropertyChanged));
this.cbReportsTo.DataBindings.Add(new Binding("SelectedValue",
  collection, EmployeesMetadata.PropertyNames.ReportsTo,
  true, DataSourceUpdateMode.OnPropertyChanged));