/// <summary>
/// Register a data control to give it Dynamic Data behavior
/// </summary>
/// <param name="setSelectionFromUrl">When true, if a primary key is found in the route values
/// (typically on the query string), it will get be set as the selected item. This only applies
/// to list controls.</param>
public void RegisterControl(Control control, bool setSelectionFromUrl)
{
//
if (DesignMode)
{
return;
}
IDataBoundControlInterface dataBoundControl = DataControlHelper.GetDataBoundControl(control, true /*failIfNotFound*/);
// If we can't get an associated IDynamicDataSource, don't do anything
IDynamicDataSource dataSource = dataBoundControl.DataSourceObject as IDynamicDataSource;
if (dataSource == null)
{
return;
}
// If we can't get a MetaTable from the data source, don't do anything
MetaTable table = MetaTableHelper.GetTableWithFullFallback(dataSource, Context.ToWrapper());
// Save the datasource so we can process its parameters in OnLoad. The value we set is irrelevant
_dataSources[dataSource] = null;
((INamingContainer)control).SetMetaTable(table);
BaseDataBoundControl baseDataBoundControl = control as BaseDataBoundControl;
if (baseDataBoundControl != null)
{
EnablePersistedSelection(baseDataBoundControl, table);
}
RegisterControlInternal(dataBoundControl, dataSource, table, setSelectionFromUrl, Page.IsPostBack);
}
/// <summary>
/// See IWhereParametersProvider.GetWhereParameters
/// </summary>
public virtual IEnumerable <Parameter> GetWhereParameters(IDynamicDataSource dataSource)
{
var table = MetaTableHelper.GetTableWithFullFallback(dataSource, HttpContext.Current.ToWrapper());
// check makes no sense as the above call will throw
//if (table == null) {
// return new Parameter[0];
//}
return(RouteParametersHelper.GetColumnParameters(table, Name));
}
public static MetaTable GetTable(this IDynamicDataSource dataSource)
{
return(MetaTableHelper.GetTableWithFullFallback(dataSource, HttpContext.Current.ToWrapper()));
}
/// <summary>
/// See IWhereParametersProvider.GetWhereParameters
/// </summary>
public virtual IEnumerable <Parameter> GetWhereParameters(IDynamicDataSource dataSource)
{
Debug.Assert(dataSource != null);
// Find the control that the ControlParameter uses
Control control = Misc.FindControl((Control)dataSource, ControlId);
if (control == null)
{
throw new InvalidOperationException(String.Format(
CultureInfo.CurrentCulture, DynamicDataResources.DynamicControlParameter_DynamicDataSourceControlNotFound, ControlId));
}
// If the control is itself a parameter provider, delegate to it
var whereParametersProvider = control as IWhereParametersProvider;
if (whereParametersProvider != null)
{
return(whereParametersProvider.GetWhereParameters(dataSource));
}
IControlParameterTarget paramTarget = DynamicDataManager.GetControlParameterTarget(control);
if (paramTarget == null)
{
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
DynamicDataResources.DynamicControlParameter_DynamicDataSourceControlCannotBeUsedAsParent, ControlId));
}
string columnName = Name;
MetaColumn column = null;
MetaTable table = MetaTableHelper.GetTableWithFullFallback(dataSource, HttpContext.Current.ToWrapper());
if (!String.IsNullOrEmpty(columnName))
{
column = table.GetColumn(columnName);
}
else
{
// There was no Name attribute telling us what field to filter, but maybe
// the control given us data has that info
column = paramTarget.FilteredColumn;
}
if (column == null)
{
// If there is no specific column, we're setting the primary key
if (paramTarget.Table != table)
{
throw new Exception(String.Format(CultureInfo.CurrentCulture,
DynamicDataResources.DynamicControlParameter_InvalidPK,
ControlId, paramTarget.Table, table.Name));
}
return(GetPrimaryKeyControlWhereParameters(control, paramTarget));
}
else if (column is MetaForeignKeyColumn)
{
return(GetForeignKeyControlWhereParameters(control, paramTarget, (MetaForeignKeyColumn)column));
}
return(GetPropertyControlWhereParameters(control, paramTarget, column));
}
