/// <summary>
/// 构造函数。
/// </summary>
protected DataSourceViewEx(IDataSourceEx owner,string viewName)
{
if (owner == null)
throw new ArgumentNullException("owner");
//if (string.IsNullOrEmpty(viewName))
// throw new ArgumentNullException("viewName");
this.name = viewName;
owner.DataSourceChanged += new EventHandler(delegate(object sender, EventArgs e)
{
this.OnDataSourceViewChanged(e);
});
}
DataSourceViewEx ConnectToDataSourceView()
{
if (!this.currentViewValid || base.DesignMode)
{
if (this.currentView != null)
this.currentView.DataSourceViewChanged -= new EventHandler(this.OnDataSourceViewChanged);
this.currentDataSource = this.GetDataSource();
string dataMember = this.DataMember;
if (this.currentDataSource == null)
{
//this.OnBuildDataSource(EventArgs.Empty);
this.currentDataSource = new ReadOnlyDataSourceEx(this.DataSource, dataMember);
}
this.currentDataSourceValid = true;
DataSourceViewEx view = this.currentDataSource.GetView(dataMember);
if (view == null)
throw new InvalidOperationException("DataControl_ViewNotFound");
else
{
this.currentView = view;
this.currentView.DataSourceViewChanged += new EventHandler(this.OnDataSourceViewChanged);
this.currentViewValid = true;
}
}
return this.currentView;
}
