categorybrowse.ascx.cs

来自「classfinalcs.rar .net 压缩包解压时不能有密码。」· CS 代码 · 共 65 行

using System;
using System.Data;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

using AspNet.StarterKits.Classifieds.Web;

public partial class CategoryBrowse_ascx : System.Web.UI.UserControl
{
	public event CategorySelectionChangedEventHandler CategorySelectionChanged;

	// see AutoNavigate property
	private bool _autoNavigate = false;

	// when AutoNavigate is true, the control automatically redirects to Search.aspx 
	// to display ads in the selected category;
	// if false, CategorySelectionChanged will be raised
	public bool AutoNavigate
	{
		get
		{
			return _autoNavigate;
		}
		set
		{
			_autoNavigate = value;
		}
	}

	protected void TopCategoryList_ItemDataBound(object sender, DataListItemEventArgs e)
	{
		ObjectDataSource nestedDS = e.Item.FindControl("NestedCategoryDS") as ObjectDataSource;
		CachedCategory parentCategory = e.Item.DataItem as CachedCategory;
		nestedDS.SelectParameters[0].DefaultValue = parentCategory.IdString;
	}
	protected void NestedSubCategoryRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
	{
		if (e.Item.ItemType == ListItemType.Item | e.Item.ItemType == ListItemType.AlternatingItem)
		{
			ObjectDataSource nestedDS = e.Item.FindControl("NestedCategoryDS2") as ObjectDataSource;
			CachedCategory parentCategory = e.Item.DataItem as CachedCategory;
			nestedDS.SelectParameters[0].DefaultValue = parentCategory.IdString;
		}
	}
	protected void TopCategoryList_ItemCommand(object source, DataListCommandEventArgs e)
	{
		int categoryId = Convert.ToInt32(e.CommandArgument);
		OnCategorySelectionChanged(new CategorySelectionChangedEventArgs(categoryId));
	}
	protected void NestedSubCategoryRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
	{
		int categoryId = Convert.ToInt32(e.CommandArgument);
		OnCategorySelectionChanged(new CategorySelectionChangedEventArgs(categoryId));
	}

	protected void OnCategorySelectionChanged(CategorySelectionChangedEventArgs e)
	{
		if (_autoNavigate)
			Response.Redirect("~/Search.aspx?c=" + e.CategoryId.ToString(), true);
		else if (CategorySelectionChanged != null)
			CategorySelectionChanged(this, e);
	}

}