我创建了一个自定义事件文档,它扩展了普通事件文档的字段。我添加了一个字段,可以在管道分隔列表中保留 0 到多个类别 ID。类别存储在自定义表中。
这是我的过滤器代码:
public partial class CMSGlobalFiles_EventCategoryFilter : CMSAbstractDataFilterControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected override void OnInit(EventArgs e)
{
SetupControl();
base.OnInit(e);
}
protected override void OnPreRender(EventArgs e)
{
if (RequestHelper.IsPostBack())
{
setFilter();
}
base.OnPreRender(e);
}
private void SetupControl()
{
if (this.StopProcessing)
{
this.Visible = false;
}
else if (!RequestHelper.IsPostBack())
{
InitializeCategory();
}
}
private void InitializeCategory()
{
CustomTableItemProvider customTableProvider = ne CustomTableItemProvider(CMSContext.CurrentUser);
string where = "";
string tableName = "customtable.EventCategory";
DataClassInfo customTable = DataClassInfoProvider.GetDataClass(tableName);
if (customTable != null)
{
DataSet dataSet = customTableProvider.GetItems(tableName, where, null);
if (!DataHelper.DataSourceIsEmpty(dataSet))
{
this.drpCategory.DataSource = dataSet;
this.drpCategory.DataTextField = "CategoryName";
this.drpCategory.DataValueField = "ItemGUID";
this.drpCategory.DataBind();
this.drpCategory.Items.Insert(0, new ListItem("(all)", "##ALL##"));
}
}
}
private void setFilter()
{
string where = null;
if (this.drpCategory.SelectedValue != null)
{
Guid itemGUID = ValidationHelper.GetGuid(this.drpCategory.SelectedValue, Guid.Empty );
if (itemGUID != Guid.Empty)
{
where = "EventCategory LIKE \'%" + itemGUID.ToString() + "%\'";
}
}
if (where != null)
{
this.WhereCondition = where;
}
this.RaiseOnFilterChanged();
}
}
这个过滤器在使用基本的转发器和文档数据源时效果很好。当我使用事件日历时,它没有。我正在使用 Kentico 版本 6.0.30