public void AddBinding(Control control, string propertyName, INotifyPropertyChanged dataSource, string dataMember, DataSourceUpdateMode dataSourceUpdateMode = DataSourceUpdateMode.OnPropertyChanged)
{
Binding binding = new Binding(propertyName, dataSource, dataMember);
binding.ControlUpdateMode = ControlUpdateMode.OnPropertyChanged;
binding.DataSourceUpdateMode = dataSourceUpdateMode;
control.DataBindings.Add(binding);
// 对同一个DataSource，仅需要注册一次事件Handler
if (!m_RegisteredDataSource.Contains(dataSource))
{
dataSource.PropertyChanged += new PropertyChangedEventHandler(dataSource_PropertyChanged);
m_RegisteredDataSource.Add(dataSource);
}
// build mapping from datasource + datamember -> control + propertyname
string key = GetKey(dataSource, dataMember);
List <DataBindingCtrlInfo> bindingCtrlInfos;
DataBindingCtrlInfo bindingCtrlInfo = new DataBindingCtrlInfo(control, propertyName, dataSource);
if (m_DTDataSource2ControlProperty.ContainsKey(key))
{
bindingCtrlInfos = m_DTDataSource2ControlProperty[key];
bindingCtrlInfos.Add(bindingCtrlInfo);
}
else
{
bindingCtrlInfos = new List <DataBindingCtrlInfo>();
bindingCtrlInfos.Add(bindingCtrlInfo);
m_DTDataSource2ControlProperty.Add(key, bindingCtrlInfos);
}
// MyLog4Net.Container.Instance.Log.DebugFormat("Add Binding key {0}, control: {1}, type {2}", key, control.GetHashCode(), control.Name);
}
private void HandleDataSourceChange(object sender, PropertyChangedEventArgs e, DataBindingCtrlInfo bindingCtrlInfo)
{
if (bindingCtrlInfo != null)
{
object val = sender.GetType().GetProperty(e.PropertyName).GetValue(sender, null);
if (string.Compare(bindingCtrlInfo.PropertyName, "Visible", true) == 0)
{
// 修改Visible 属性不生效， 这里改为调用 Show， Hide 方法
Control ctrl = bindingCtrlInfo.Ctrl;
bool show;
if (Boolean.TryParse(val.ToString(), out show))
{
if (show)
{
ctrl.Show();
}
else
{
ctrl.Hide();
}
}
}
else
{
if (string.Compare(bindingCtrlInfo.PropertyName, "Text", true) == 0 && val != null)
{
bindingCtrlInfo.Ctrl.GetType().GetProperty(bindingCtrlInfo.PropertyName).SetValue(
bindingCtrlInfo.Ctrl, val.ToString(), null);
}
else
{
bindingCtrlInfo.Ctrl.GetType().GetProperty(bindingCtrlInfo.PropertyName).SetValue(
bindingCtrlInfo.Ctrl, val, null);
}
}
}
}
