C# 在基于Ajax搜索的Webcontrol上实现分页功能
我目前正在使用带有updatemode条件的UpdatePanel构建搜索功能。此updatepanel的触发器是我的搜索短语文本框。当TextChanged触发时，我的面板将更新，并显示正确的搜索结果。 然而，我对如何实现与搜索结果一起工作的分页功能一无所知。 我希望分页链接显示在部分页面更新上，我希望分页器也更新我的搜索结果（只希望在一个页面上显示3个结果）。 如何正确设置此项 这是我的代码（ascx）C# 在基于Ajax搜索的Webcontrol上实现分页功能,c#,asp.net,ajax,paging,C#,Asp.net,Ajax,Paging,我目前正在使用带有updatemode条件的UpdatePanel构建搜索功能。此updatepanel的触发器是我的搜索短语文本框。当TextChanged触发时，我的面板将更新，并显示正确的搜索结果。 然而，我对如何实现与搜索结果一起工作的分页功能一无所知。 我希望分页链接显示在部分页面更新上，我希望分页器也更新我的搜索结果（只希望在一个页面上显示3个结果）。 如何正确设置此项 这是我的代码（ascx） 帕吉纳标志处： 函数ClientCallbackFunction（args） {
帕吉纳标志处：
函数ClientCallbackFunction（args）
{
}
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// Needed to store the searchResults
List<Item> validSearchResults = new List<Item>();
private List<string> listOneSelectedItems = new List<string>();
private List<string> listTwoSelectedItems = new List<string>();
private string currentCategoryPath = string.Empty;
private string _callbackArgs;
/// <summary>
/// Raises the <see cref="E:System.Web.UI.Control.Init"/> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs"/> object that contains the event data.</param>
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.UpdateSelectedItemLists();
this.currentCategoryPath = Sitecore.Context.Item.Paths.FullPath;
this.searchPhrase.TextChanged += new EventHandler(searchPhrase_TextChanged);
this.filterOneCbl.SelectedIndexChanged += new EventHandler(filterOneCbl_SelectedIndexChanged);
this.filterTwoCbl.SelectedIndexChanged += new EventHandler(filterTwoCbl_SelectedIndexChanged);
this.ProductRepeater.ItemDataBound += new RepeaterItemEventHandler(ProductRepeater_ItemDataBound);
}
private void UpdateScreen()
{
// update the list of selectedItems for use with the selection of new Items from the index
this.UpdateSelectedItemLists();
this.GetSearchResults();
ProductRepeater.DataSource = validSearchResults;
ProductRepeater.DataBind();
ProductenUpdate.Update();
}
void btnSearch_Click(object sender, EventArgs e)
{
// update the list of selectedItems for use with the selection of new Items from the index
this.UpdateSelectedItemLists();
this.GetSearchResults();
ProductRepeater.DataSource = validSearchResults;
ProductRepeater.DataBind();
ProductenUpdate.Update();
}
private void ProductRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
Item dataItem = (Item)e.Item.DataItem;
// if there is a dataItem
if (dataItem != null)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.Item)
{
Sitecore.Web.UI.WebControls.Text Titel = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Titel");
Sitecore.Web.UI.WebControls.Text Auteur = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Auteur");
Sitecore.Web.UI.WebControls.Text Intro = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Intro");
Sitecore.Web.UI.WebControls.Image Thumb = (Sitecore.Web.UI.WebControls.Image)e.Item.FindControl("Thumb");
if (Thumb != null)
{
Thumb.Item = dataItem;
}
if (Titel != null)
{
Titel.Item = dataItem;
}
if (Auteur != null)
{
Auteur.Item = dataItem;
}
if (Intro != null)
{
Intro.Item = dataItem;
}
}
}
}
/// <summary>
/// Handles the TextChanged event of the searchPhrase control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void searchPhrase_TextChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Handles the SelectedIndexChanged event of the filterTwoCbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void filterTwoCbl_SelectedIndexChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Handles the SelectedIndexChanged event of the filterOneCbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void filterOneCbl_SelectedIndexChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Updates the selected item lists.
/// </summary>
private void UpdateSelectedItemLists()
{
foreach (ListItem thisItem in filterOneCbl.Items)
{
if (thisItem.Selected)
{
if (!listOneSelectedItems.Contains(thisItem.Value.ToUpper()))
{
listOneSelectedItems.Add(thisItem.Value.ToUpper());
}
}
}
foreach (ListItem thisItem in filterTwoCbl.Items)
{
if (thisItem.Selected)
{
if (!listTwoSelectedItems.Contains(thisItem.Value.ToUpper()))
{
listTwoSelectedItems.Add(thisItem.Value.ToUpper());
}
}
}
}
/// <summary>
/// Gets the search results.
/// </summary>
private void GetSearchResults()
{
SearchResultRetreiver retriever = new SearchResultRetreiver("productenSearch");
IndexSearcher searcher = null;
Hits mySearchResults = retriever.GetSearchResults(searchPhrase.Text.Trim(), ref searcher);
if (mySearchResults != null)
{
for (int i = 0; i < mySearchResults.Length(); i++)
{
Item newItem = Sitecore.Data.Indexing.Index.GetItem(mySearchResults.Doc(i), Sitecore.Context.Database);
string itemTitel = SitecoreHelper.ShowItemTitel(newItem);
bool addItem = true;
if (itemTitel.StartsWith("$")) addItem = false;
if (itemTitel.StartsWith("_")) addItem = false;
if (addItem)
{
this.validSearchResults.Add(newItem);
}
}
}
}
private void FilterSearchResults()
{
}
/// <summary>
/// Handles the Load event of the Page control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
protected void Page_Load(object sender, EventArgs e)
{
Item contextItem = Sitecore.Context.Item;
Item subwebsiteItem = contextItem.Axes.GetAncestors().Where(c => c.Axes.Level == 4).FirstOrDefault<Item>();
Sitecore.Data.Fields.CheckboxField filterOneSelected = subwebsiteItem.Fields["Filter1Actief"];
Sitecore.Data.Fields.CheckboxField filterTwoSelected = subwebsiteItem.Fields["Filter2Actief"];
if (filterOneSelected.Checked)
{
TitelTwo.Item = subwebsiteItem;
}
if (filterTwoSelected.Checked)
{
TitelOne.Item = subwebsiteItem;
}
if (!Page.IsPostBack)
{
string callbackRef = Page.ClientScript.GetCallbackEventReference(this, "args", "ClientCallbackFunction", "");
string callbackScript = "function MyServerCall(args)" +
"{" + callbackRef + "}";
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "MyServerCall", callbackScript, true);
filterOnePlaceholder.Visible = false;
filterTwoPlaceholder.Visible = false;
if (subwebsiteItem != null)
{
if (filterOneSelected.Checked)
{
filterOnePlaceholder.Visible = true;
Item filterOneLocation = Sitecore.Context.Database.GetItem(subwebsiteItem.Paths.FullPath + "/Filters/Filter1");
List<Item> filterOneList = new List<Item>();
filterOneList = filterOneLocation.GetChildren().Where(c => c.TemplateName.ToLower() == "filter").ToList<Item>();
foreach (Item filterItem in filterOneList)
{
ListItem thisItem = new ListItem(filterItem["Naam"], filterItem.ID.ToGuid().ToString());
this.filterOneCbl.Items.Add(thisItem);
}
}
if (filterTwoSelected.Checked)
{
filterTwoPlaceholder.Visible = true;
Item filterTwoLocation = Sitecore.Context.Database.GetItem(subwebsiteItem.Paths.FullPath + "/Filters/Filter2");
List<Item> filterTwoList = new List<Item>();
filterTwoList = filterTwoLocation.GetChildren().Where(c => c.TemplateName.ToLower() == "filter").ToList<Item>();
foreach (Item filterItem in filterTwoList)
{
ListItem thisItem = new ListItem(filterItem["Naam"], filterItem.ID.ToGuid().ToString());
this.filterTwoCbl.Items.Add(thisItem);
}
}
}
}
}
#region ICallbackEventHandler Members
/// <summary>
/// Returns the results of a callback event that targets a control.
/// </summary>
/// <returns>The result of the callback.</returns>
public string GetCallbackResult()
{
return this._callbackArgs;
}
/// <summary>
/// Processes a callback event that targets a control.
/// </summary>
/// <param name="eventArgument">A string that represents an event argument to pass to the event handler.</param>
public void RaiseCallbackEvent(string eventArgument)
{
this._callbackArgs = eventArgument;
}
//需要存储搜索结果
List validSearchResults=新列表（）；
私有列表listOneSelectedItems=新列表（）；
私有列表listTwoSelectedItems=新列表（）；
私有字符串currentCategoryPath=string.Empty；
私有字符串_callbackArgs；
///
///引发事件。
///
///包含事件数据的对象。
受保护的覆盖无效OnInit（事件参数e）
{
碱基.奥尼特（e）；
this.UpdateSelectedItemLists（）；
this.currentCategoryPath=Sitecore.Context.Item.Paths.FullPath；
this.searchPhrase.TextChanged+=新事件处理程序（searchPhrase\u TextChanged）；
this.filterOneCbl.SelectedIndexChanged+=新事件处理程序（filterOneCbl\u SelectedIndexChanged）；
this.filterTwoCbl.SelectedIndexChanged+=新事件处理程序（filterTwoCbl\u SelectedIndexChanged）；
this.ProductRepeater.ItemDataBound+=新的RepeaterItemEventHandler（ProductRepeater\u ItemDataBound）；
}
私有void UpdateScreen（）
{
//更新selectedItems列表，以便与从索引中选择的新项一起使用
this.UpdateSelectedItemLists（）；
这是.GetSearchResults（）；
ProductRepeater.DataSource=有效搜索结果；
ProductRepeater.DataBind（）；
ProductenUpdate.Update（）；
}
无效btnSearch_单击（对象发送者，事件参数e）
{
//更新selectedItems列表，以便与从索引中选择的新项一起使用
this.UpdateSelectedItemLists（）；
这是.GetSearchResults（）；
ProductRepeater.DataSource=有效搜索结果；
ProductRepeater.DataBind（）；
ProductenUpdate.Update（）；
}
私有void ProductRepeater_ItemDataBound（对象发送方，RepeaterItemEventArgs e）
{
Item dataItem=（Item）e.Item.dataItem；
//如果有数据项
if（dataItem！=null）
{
如果（e.Item.ItemType==ListItemType.Item | | e.Item.ItemType==ListItemType.Item）
{
Sitecore.Web.UI.WebControls.Text Titel=（Sitecore.Web.UI.WebControls.Text）e.Item.FindControl（“Titel”）；
Sitecore.Web.UI.WebControls.Text Auteur=（Sitecore.Web.UI.WebControls.Text）e.Item.FindControl（“Auteur”）；
Sitecore.Web.UI.WebControls.Text Intro=（Sitecore.Web.UI.WebControls.Text）e.Item.FindControl（“Intro”）；
Sitecore.Web.UI.WebControls.Image Thumb=（Sitecore.Web.UI.WebControls.Image）e.Item.FindControl（“Thumb”）；
if（Thumb！=null）
{
Thumb.Item=dataItem；
}
如果（滴度！=null）
{
Titel.Item=数据项；
}
如果（AUTUR！=null）
{
Auteur.Item=数据项；
}
如果（简介！=null）
{
简介项=数据项；
}
}
}
}
///
///处理SearchPhase控件的TextChanged事件。
///
///事件的来源。
///包含事件数据的实例。
private void SearchPhase_TextChanged（对象发送方，事件参数e）
{
this.UpdateScreen（）；
}
///
///处理FilterWOCBL控件的SelectedIndexChanged事件。
///
///事件的来源。
///包含事件数据的实例。
私有无效筛选器WOCBL\u SelectedIndexChanged（对象发送方，事件参数e）
{
this.UpdateScreen（）；
}
///
///处理filterOneCbl控件的SelectedIndexChanged事件。
///
///事件的来源。
///包含事件数据的实例。
私有无效筛选器已选择索引已更改（对象发件人，事件参数e）
{
this.UpdateScreen（）；
}
///
///更新所选项目列表。
///
私有void UpdateSelectedItemLists（）
{
foreach（filterOneCbl.Items中的ListItem thisItem）
{
如果（已选择此项）
{
如果（！listOneSelectedItems.Contains（thisItem.Value.ToUpper（）））
{
listOneSelectedItems.Add（thisItem.Value.ToUpper（））；
}
}
}
foreach（过滤器WOCBL.Items中的ListItem thisItem）
{
如果（已选择此项）
{
如果（！listTwoSelectedItems.Contains（thisItem.Value.ToUpper（）））
{
listTwoSelectedItems.Add（thisItem.Value.ToUpper（））；
}
}
}
}
///
///获取搜索结果
// Needed to store the searchResults
List<Item> validSearchResults = new List<Item>();
private List<string> listOneSelectedItems = new List<string>();
private List<string> listTwoSelectedItems = new List<string>();
private string currentCategoryPath = string.Empty;
private string _callbackArgs;
/// <summary>
/// Raises the <see cref="E:System.Web.UI.Control.Init"/> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs"/> object that contains the event data.</param>
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.UpdateSelectedItemLists();
this.currentCategoryPath = Sitecore.Context.Item.Paths.FullPath;
this.searchPhrase.TextChanged += new EventHandler(searchPhrase_TextChanged);
this.filterOneCbl.SelectedIndexChanged += new EventHandler(filterOneCbl_SelectedIndexChanged);
this.filterTwoCbl.SelectedIndexChanged += new EventHandler(filterTwoCbl_SelectedIndexChanged);
this.ProductRepeater.ItemDataBound += new RepeaterItemEventHandler(ProductRepeater_ItemDataBound);
}
private void UpdateScreen()
{
// update the list of selectedItems for use with the selection of new Items from the index
this.UpdateSelectedItemLists();
this.GetSearchResults();
ProductRepeater.DataSource = validSearchResults;
ProductRepeater.DataBind();
ProductenUpdate.Update();
}
void btnSearch_Click(object sender, EventArgs e)
{
// update the list of selectedItems for use with the selection of new Items from the index
this.UpdateSelectedItemLists();
this.GetSearchResults();
ProductRepeater.DataSource = validSearchResults;
ProductRepeater.DataBind();
ProductenUpdate.Update();
}
private void ProductRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
Item dataItem = (Item)e.Item.DataItem;
// if there is a dataItem
if (dataItem != null)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.Item)
{
Sitecore.Web.UI.WebControls.Text Titel = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Titel");
Sitecore.Web.UI.WebControls.Text Auteur = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Auteur");
Sitecore.Web.UI.WebControls.Text Intro = (Sitecore.Web.UI.WebControls.Text)e.Item.FindControl("Intro");
Sitecore.Web.UI.WebControls.Image Thumb = (Sitecore.Web.UI.WebControls.Image)e.Item.FindControl("Thumb");
if (Thumb != null)
{
Thumb.Item = dataItem;
}
if (Titel != null)
{
Titel.Item = dataItem;
}
if (Auteur != null)
{
Auteur.Item = dataItem;
}
if (Intro != null)
{
Intro.Item = dataItem;
}
}
}
}
/// <summary>
/// Handles the TextChanged event of the searchPhrase control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void searchPhrase_TextChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Handles the SelectedIndexChanged event of the filterTwoCbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void filterTwoCbl_SelectedIndexChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Handles the SelectedIndexChanged event of the filterOneCbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void filterOneCbl_SelectedIndexChanged(object sender, EventArgs e)
{
this.UpdateScreen();
}
/// <summary>
/// Updates the selected item lists.
/// </summary>
private void UpdateSelectedItemLists()
{
foreach (ListItem thisItem in filterOneCbl.Items)
{
if (thisItem.Selected)
{
if (!listOneSelectedItems.Contains(thisItem.Value.ToUpper()))
{
listOneSelectedItems.Add(thisItem.Value.ToUpper());
}
}
}
foreach (ListItem thisItem in filterTwoCbl.Items)
{
if (thisItem.Selected)
{
if (!listTwoSelectedItems.Contains(thisItem.Value.ToUpper()))
{
listTwoSelectedItems.Add(thisItem.Value.ToUpper());
}
}
}
}
/// <summary>
/// Gets the search results.
/// </summary>
private void GetSearchResults()
{
SearchResultRetreiver retriever = new SearchResultRetreiver("productenSearch");
IndexSearcher searcher = null;
Hits mySearchResults = retriever.GetSearchResults(searchPhrase.Text.Trim(), ref searcher);
if (mySearchResults != null)
{
for (int i = 0; i < mySearchResults.Length(); i++)
{
Item newItem = Sitecore.Data.Indexing.Index.GetItem(mySearchResults.Doc(i), Sitecore.Context.Database);
string itemTitel = SitecoreHelper.ShowItemTitel(newItem);
bool addItem = true;
if (itemTitel.StartsWith("$")) addItem = false;
if (itemTitel.StartsWith("_")) addItem = false;
if (addItem)
{
this.validSearchResults.Add(newItem);
}
}
}
}
private void FilterSearchResults()
{
}
/// <summary>
/// Handles the Load event of the Page control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
protected void Page_Load(object sender, EventArgs e)
{
Item contextItem = Sitecore.Context.Item;
Item subwebsiteItem = contextItem.Axes.GetAncestors().Where(c => c.Axes.Level == 4).FirstOrDefault<Item>();
Sitecore.Data.Fields.CheckboxField filterOneSelected = subwebsiteItem.Fields["Filter1Actief"];
Sitecore.Data.Fields.CheckboxField filterTwoSelected = subwebsiteItem.Fields["Filter2Actief"];
if (filterOneSelected.Checked)
{
TitelTwo.Item = subwebsiteItem;
}
if (filterTwoSelected.Checked)
{
TitelOne.Item = subwebsiteItem;
}
if (!Page.IsPostBack)
{
string callbackRef = Page.ClientScript.GetCallbackEventReference(this, "args", "ClientCallbackFunction", "");
string callbackScript = "function MyServerCall(args)" +
"{" + callbackRef + "}";
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "MyServerCall", callbackScript, true);
filterOnePlaceholder.Visible = false;
filterTwoPlaceholder.Visible = false;
if (subwebsiteItem != null)
{
if (filterOneSelected.Checked)
{
filterOnePlaceholder.Visible = true;
Item filterOneLocation = Sitecore.Context.Database.GetItem(subwebsiteItem.Paths.FullPath + "/Filters/Filter1");
List<Item> filterOneList = new List<Item>();
filterOneList = filterOneLocation.GetChildren().Where(c => c.TemplateName.ToLower() == "filter").ToList<Item>();
foreach (Item filterItem in filterOneList)
{
ListItem thisItem = new ListItem(filterItem["Naam"], filterItem.ID.ToGuid().ToString());
this.filterOneCbl.Items.Add(thisItem);
}
}
if (filterTwoSelected.Checked)
{
filterTwoPlaceholder.Visible = true;
Item filterTwoLocation = Sitecore.Context.Database.GetItem(subwebsiteItem.Paths.FullPath + "/Filters/Filter2");
List<Item> filterTwoList = new List<Item>();
filterTwoList = filterTwoLocation.GetChildren().Where(c => c.TemplateName.ToLower() == "filter").ToList<Item>();
foreach (Item filterItem in filterTwoList)
{
ListItem thisItem = new ListItem(filterItem["Naam"], filterItem.ID.ToGuid().ToString());
this.filterTwoCbl.Items.Add(thisItem);
}
}
}
}
}
#region ICallbackEventHandler Members
/// <summary>
/// Returns the results of a callback event that targets a control.
/// </summary>
/// <returns>The result of the callback.</returns>
public string GetCallbackResult()
{
return this._callbackArgs;
}
/// <summary>
/// Processes a callback event that targets a control.
/// </summary>
/// <param name="eventArgument">A string that represents an event argument to pass to the event handler.</param>
public void RaiseCallbackEvent(string eventArgument)
{
this._callbackArgs = eventArgument;
}