private IFilterExpressionProvider FindControl(Control control)
{
var result = Misc.FindControl(control, ControlID) as IFilterExpressionProvider;
if (result == null)
{
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture, "The control '{0}' could not be found.", ControlID));
}
return(result);
}
private Control FindTargetControl()
{
Control control = Misc.FindControl(Owner, ControlID);
if (control == null)
{
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
DynamicDataResources.ControlFilterExpression_CouldNotFindControlID,
Owner.ID,
ControlID));
}
return(control);
}
private void OnPageInit(object sender, EventArgs e)
{
foreach (DataControlReference controlReference in DataControls)
{
Control targetControl = Misc.FindControl(this, controlReference.ControlID);
if (targetControl == null)
{
throw new InvalidOperationException(
String.Format(CultureInfo.CurrentCulture,
DynamicDataResources.DynamicDataManager_ControlNotFound,
controlReference.ControlID));
}
RegisterControl(targetControl);
}
}
/// <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));
}
