/// <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);
}
internal static IDynamicDataSource FindDataSourceControl(Control current)
{
for (; ; current = current.NamingContainer)
{
// Don't look further than the Page, or if the control is not added to a page hierarchy
if (current == null || current is Page)
{
return(null);
}
IDataBoundControlInterface dataBoundControl = GetDataBoundControl(current, false /*failIfNotFound*/);
// Not a data control: continue searching
if (dataBoundControl == null)
{
continue;
}
// Return its DynamicDataSource
return(dataBoundControl.DataSourceObject as IDynamicDataSource);
}
}
internal static IDataBoundControlInterface GetDataBoundControl(Control control, bool failIfNotFound)
{
if (control is IDataBoundControlInterface)
{
return((IDataBoundControlInterface)control);
}
IDataBoundControlInterface dataBoundControl = null;
if (control is Repeater)
{
dataBoundControl = GetControlAdapter(control);
}
if (dataBoundControl == null && failIfNotFound)
{
throw new Exception(String.Format(
CultureInfo.CurrentCulture,
DynamicDataResources.DynamicDataManager_UnsupportedControl,
control.GetType()));
}
return(dataBoundControl);
}
internal void RegisterControlInternal(IDataBoundControlInterface dataBoundControl, IDynamicDataSource dataSource, IMetaTable table, bool setSelectionFromUrl, bool isPostBack) {
// Set the auto field generator (for controls that support it - GridView and DetailsView)
IFieldControl fieldControl = dataBoundControl as IFieldControl;
if (fieldControl != null) {
fieldControl.FieldsGenerator = new DefaultAutoFieldGenerator(table);
}
var linqDataSource = dataSource as LinqDataSource;
var entityDataSource = dataSource as EntityDataSource;
// If the context type is not set, we need to set it
if (dataSource.ContextType == null) {
dataSource.ContextType = table.DataContextType;
// If it's a LinqDataSurce, register for ContextCreating so the context gets created using the correct ctor
// Ideally, this would work with other datasource, but we just don't have the right abstraction
if (linqDataSource != null) {
linqDataSource.ContextCreating += delegate(object sender, LinqDataSourceContextEventArgs e) {
e.ObjectInstance = table.CreateContext();
};
}
if (entityDataSource != null) {
entityDataSource.ContextCreating += delegate(object sender, EntityDataSourceContextCreatingEventArgs e) {
e.Context = (ObjectContext)table.CreateContext();
};
}
}
// If the datasource doesn't have an EntitySetName (aka TableName), set it from the meta table
if (String.IsNullOrEmpty(dataSource.EntitySetName)) {
dataSource.EntitySetName = table.DataContextPropertyName;
}
// If there is no Where clause, turn on auto generate
if (String.IsNullOrEmpty(dataSource.Where)) {
dataSource.AutoGenerateWhereClause = true;
}
// If it's a LinqDataSource and the flag is set, pre load the foreign keys
if (AutoLoadForeignKeys && linqDataSource != null) {
linqDataSource.LoadWithForeignKeys(table.EntityType);
}
if (!isPostBack) {
if (table.HasPrimaryKey) {
dataBoundControl.DataKeyNames = table.PrimaryKeyNames;
// Set the virtual selection from the URL if needed
var dataKeySelector = dataBoundControl as IPersistedSelector;
if (dataKeySelector != null && setSelectionFromUrl) {
DataKey dataKey = table.GetDataKeyFromRoute();
if (dataKey != null) {
dataKeySelector.DataKey = dataKey;
}
}
}
}
}
internal void RegisterControlInternal(IDataBoundControlInterface dataBoundControl, IDynamicDataSource dataSource, IMetaTable table, bool setSelectionFromUrl, bool isPostBack)
{
// Set the auto field generator (for controls that support it - GridView and DetailsView)
IFieldControl fieldControl = dataBoundControl as IFieldControl;
if (fieldControl != null)
{
fieldControl.FieldsGenerator = new DefaultAutoFieldGenerator(table);
}
var linqDataSource = dataSource as LinqDataSource;
var entityDataSource = dataSource as EntityDataSource;
// If the context type is not set, we need to set it
if (dataSource.ContextType == null)
{
dataSource.ContextType = table.DataContextType;
// If it's a LinqDataSurce, register for ContextCreating so the context gets created using the correct ctor
// Ideally, this would work with other datasource, but we just don't have the right abstraction
if (linqDataSource != null)
{
linqDataSource.ContextCreating += delegate(object sender, LinqDataSourceContextEventArgs e) {
e.ObjectInstance = table.CreateContext();
};
}
if (entityDataSource != null)
{
entityDataSource.ContextCreating += delegate(object sender, EntityDataSourceContextCreatingEventArgs e) {
e.Context = (ObjectContext)table.CreateContext();
};
}
}
// If the datasource doesn't have an EntitySetName (aka TableName), set it from the meta table
if (String.IsNullOrEmpty(dataSource.EntitySetName))
{
dataSource.EntitySetName = table.DataContextPropertyName;
}
// If there is no Where clause, turn on auto generate
if (String.IsNullOrEmpty(dataSource.Where))
{
dataSource.AutoGenerateWhereClause = true;
}
// If it's a LinqDataSource and the flag is set, pre load the foreign keys
if (AutoLoadForeignKeys && linqDataSource != null)
{
linqDataSource.LoadWithForeignKeys(table.EntityType);
}
if (!isPostBack)
{
if (table.HasPrimaryKey)
{
dataBoundControl.DataKeyNames = table.PrimaryKeyNames;
// Set the virtual selection from the URL if needed
var dataKeySelector = dataBoundControl as IPersistedSelector;
if (dataKeySelector != null && setSelectionFromUrl)
{
DataKey dataKey = table.GetDataKeyFromRoute();
if (dataKey != null)
{
dataKeySelector.DataKey = dataKey;
}
}
}
}
}
