//AspNetPager分页控件源代码：
//版权所有：陕西省延安市吴起县博杨计算机有限公司 杨涛（Webdiyer）
//此源代码仅供学习参考，不得用于任何商业用途；
//您可以修改并重新编译该控件，但源代码中的版权信息必须原样保留！
//有关控件升级及新控件发布信息，请留意 www.webdiyer.com 。
using System;
using System.Collections.Specialized;
using System.IO;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text.RegularExpressions;
namespace Wuqi.Webdiyer
{
public partial class AspNetPager
{
#region Private Helper Functions
static void addMoreListItem(HtmlTextWriter writer, int pageIndex)
{
writer.Write("<option value=\"");
writer.Write(pageIndex);
writer.Write("\">......</option>");
}
void listPageIndices(HtmlTextWriter writer, int startIndex, int endIndex)
{
for (int i = startIndex; i <= endIndex; i++)
{
writer.Write("<option value=\"");
writer.Write(i);
writer.Write("\"");
if (i == CurrentPageIndex)
writer.Write(" selected=\"true\"");
writer.Write(">");
writer.Write(i);
writer.Write("</option>");
}
}
private void RenderCustomInfoSection(HtmlTextWriter writer)
{
if (Height != Unit.Empty)
writer.AddStyleAttribute(HtmlTextWriterStyle.Height, Height.ToString());
string customUnit = CustomInfoSectionWidth.ToString();
if (CustomInfoClass != null && CustomInfoClass.Trim().Length > 0)
writer.AddAttribute(HtmlTextWriterAttribute.Class, CustomInfoClass);
if (CustomInfoStyle != null && CustomInfoStyle.Trim().Length > 0)
writer.AddAttribute(HtmlTextWriterAttribute.Style, CustomInfoStyle);
writer.AddStyleAttribute(HtmlTextWriterStyle.Width, customUnit);
if (CustomInfoTextAlign != HorizontalAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, CustomInfoTextAlign.ToString().ToLower());
if (LayoutType == LayoutType.Table)
{
writer.AddAttribute(HtmlTextWriterAttribute.Valign, "bottom");
writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "true");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
}
else
{
writer.AddStyleAttribute("float", "left");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
}
writer.Write(GetCustomInfoHtml(CustomInfoHTML));
writer.RenderEndTag();
}
private void RenderNavigationSection(HtmlTextWriter writer)
{
if (CustomInfoSectionWidth.Type == UnitType.Percentage)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.Width,
(Unit.Percentage(100 - CustomInfoSectionWidth.Value)).ToString());
}
if (HorizontalAlign != HorizontalAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, HorizontalAlign.ToString().ToLower());
if (!string.IsNullOrEmpty(CssClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClass);
if (LayoutType == LayoutType.Table)
{
writer.AddAttribute(HtmlTextWriterAttribute.Valign, "bottom");
writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "true");
writer.RenderBeginTag(HtmlTextWriterTag.Td); //<td>
}
else
{
writer.AddStyleAttribute("float", "left");
writer.RenderBeginTag(HtmlTextWriterTag.Div); //<div>
}
RenderPagingElements(writer);
writer.RenderEndTag(); //</div> or </td>
}
private void RenderPagingElements(HtmlTextWriter writer)
{
int startIndex = ((CurrentPageIndex - 1) / NumericButtonCount) * NumericButtonCount;
//this is an important trick, it's not the same as CurrentPageIndex-1
if (PageCount > NumericButtonCount && CurrentPageButtonPosition != PagingButtonPosition.Fixed)
{
switch (CurrentPageButtonPosition)
{
case PagingButtonPosition.End:
if (CurrentPageIndex > NumericButtonCount)
startIndex = CurrentPageIndex - NumericButtonCount;
break;
case PagingButtonPosition.Center:
int startOffset = CurrentPageIndex - (int)(Math.Ceiling((double)NumericButtonCount / 2));
if (startOffset > 0)
{
startIndex = startOffset;
if (startIndex > (PageCount - NumericButtonCount))
startIndex = PageCount - NumericButtonCount;
}
break;
case PagingButtonPosition.Beginning:
startIndex = CurrentPageIndex - 1;
if (startIndex + NumericButtonCount > PageCount)
startIndex = PageCount - NumericButtonCount;
break;
}
}
int endIndex = ((startIndex + NumericButtonCount) > PageCount)
? PageCount
: (startIndex + NumericButtonCount);
if (NavigationButtonsPosition == NavigationButtonPosition.Left ||
NavigationButtonsPosition == NavigationButtonPosition.BothSides)
{
CreateNavigationButton(writer, NavigationButton.First);
CreateNavigationButton(writer, NavigationButton.Prev);
if (NavigationButtonsPosition == NavigationButtonPosition.Left)
{
CreateNavigationButton(writer, NavigationButton.Next);
CreateNavigationButton(writer, NavigationButton.Last);
}
}
if (AlwaysShowFirstLastPageNumber && startIndex > 0)
CreateNumericButton(writer, 1);
if (ShowMoreButtons && ((!AlwaysShowFirstLastPageNumber && startIndex > 0) || (AlwaysShowFirstLastPageNumber && startIndex > 1)))
CreateMoreButton(writer, startIndex);
if (ShowPageIndex)
{
for (int i = startIndex + 1; i <= endIndex; i++)
{
CreateNumericButton(writer, i);
}
}
if (ShowMoreButtons && PageCount > NumericButtonCount && ((!AlwaysShowFirstLastPageNumber && endIndex < PageCount) || (AlwaysShowFirstLastPageNumber && PageCount > endIndex + 1)))
CreateMoreButton(writer, endIndex + 1);
if (AlwaysShowFirstLastPageNumber && endIndex < PageCount)
CreateNumericButton(writer, PageCount);
if (NavigationButtonsPosition == NavigationButtonPosition.Right ||
NavigationButtonsPosition == NavigationButtonPosition.BothSides)
{
if (NavigationButtonsPosition == NavigationButtonPosition.Right)
{
CreateNavigationButton(writer, NavigationButton.First);
CreateNavigationButton(writer, NavigationButton.Prev);
}
CreateNavigationButton(writer, NavigationButton.Next);
CreateNavigationButton(writer, NavigationButton.Last);
}
if ((ShowPageIndexBox == ShowPageIndexBox.Always) ||
(ShowPageIndexBox == ShowPageIndexBox.Auto && PageCount >= ShowBoxThreshold))
{
string boxClientId = UniqueID + "_input";
writer.Write(" ");
if (!string.IsNullOrEmpty(TextBeforePageIndexBox))
writer.Write(TextBeforePageIndexBox);
if (PageIndexBoxType == PageIndexBoxType.TextBox) //TextBox
{
writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "30px");
writer.AddAttribute(HtmlTextWriterAttribute.Value, CurrentPageIndex.ToString());
if (!string.IsNullOrEmpty(PageIndexBoxStyle))
writer.AddAttribute(HtmlTextWriterAttribute.Style, PageIndexBoxStyle);
if (!string.IsNullOrEmpty(PageIndexBoxClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, PageIndexBoxClass);
if (!Enabled || (PageCount <= 1 && AlwaysShow))
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
writer.AddAttribute(HtmlTextWriterAttribute.Name, boxClientId);
writer.AddAttribute(HtmlTextWriterAttribute.Id, boxClientId);
string chkInputScript = "ANP_checkInput(\'" + boxClientId + "\'," + PageCount + ",\'" + PageIndexOutOfRangeErrorMessage + "\',\'" + InvalidPageIndexErrorMessage + "\')";
string keydownScript = "ANP_keydown(event,\'" + UniqueID + "_btn\');";
string keyupScript = "ANP_keyup(\'" + UniqueID + "_input\');";
string fp = GetHrefString(1);
string clickScript = "if(" + chkInputScript + "){ANP_goToPage(\'" + boxClientId + "\',\'" + UrlPageIndexName + "\',\'" +fp+ "\',\'"+ GetHrefString(-1) + "\',\'" + UrlPagingTarget + "\'," + PageCount + "," + (ReverseUrlPageIndex ? "true" : "false") + ");};return false;";
writer.AddAttribute("onkeydown", keydownScript, false);
writer.AddAttribute("onkeyup", keyupScript, false);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
//Text after page index box
if (!string.IsNullOrEmpty(TextAfterPageIndexBox))
writer.Write(TextAfterPageIndexBox);
//button
if (!string.IsNullOrEmpty(SubmitButtonImageUrl))
{
writer.AddAttribute(HtmlTextWriterAttribute.Type, "image");
writer.AddAttribute(HtmlTextWriterAttribute.Src, SubmitButtonImageUrl);
}
else
{
writer.AddAttribute(HtmlTextWriterAttribute.Type, UrlPaging ? "button" : "submit");
writer.AddAttribute(HtmlTextWriterAttribute.Value, SubmitButtonText);
}
writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID);
writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_btn");
if (!string.IsNullOrEmpty(SubmitButtonClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, SubmitButtonClass);
if (!string.IsNullOrEmpty(SubmitButtonStyle))
writer.AddAttribute(HtmlTextWriterAttribute.Style, SubmitButtonStyle);
if (!Enabled || (PageCount <= 1 && AlwaysShow))
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
writer.AddAttribute(HtmlTextWriterAttribute.Onclick,
(UrlPaging)
? clickScript
: "if(" + chkInputScript + "){" +
Page.ClientScript.GetPostBackEventReference(this, null) +
"} else{return false}", false);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
}
else //Dropdownlist
{
writer.AddAttribute(HtmlTextWriterAttribute.Name, boxClientId);
writer.AddAttribute(HtmlTextWriterAttribute.Id, boxClientId);
writer.AddAttribute(HtmlTextWriterAttribute.Onchange,
UrlPaging
? "ANP_goToPage(\'" + boxClientId + "\',\'" + UrlPageIndexName + "\',\'" +GetHrefString(1)+ "\',\'"+ GetHrefString(-1) + "\',\'" + UrlPagingTarget + "\'," + PageCount + "," + (ReverseUrlPageIndex ? "true" : "false") + ")"
: Page.ClientScript.GetPostBackEventReference(this, null), false);
if (!string.IsNullOrEmpty(PageIndexBoxStyle))
writer.AddAttribute(HtmlTextWriterAttribute.Style, PageIndexBoxStyle);
if (!string.IsNullOrEmpty(PageIndexBoxClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, PageIndexBoxClass);
writer.RenderBeginTag(HtmlTextWriterTag.Select);
if (PageCount > 80) //list only part of page indices
{
if (CurrentPageIndex <= 15)
{
listPageIndices(writer, 1, 15);
addMoreListItem(writer, 16);
listPageIndices(writer, PageCount - 4, PageCount);
}
else if (CurrentPageIndex >= PageCount - 14)
{
listPageIndices(writer, 1, 5);
addMoreListItem(writer, PageCount - 15);
listPageIndices(writer, PageCount - 14, PageCount);
}
else
{
listPageIndices(writer, 1, 5);
addMoreListItem(writer, CurrentPageIndex - 6);
listPageIndices(writer, CurrentPageIndex - 5, CurrentPageIndex + 5);
addMoreListItem(writer, CurrentPageIndex + 6);
listPageIndices(writer, PageCount - 4, PageCount);
}
}
else //list all page indices
listPageIndices(writer, 1, PageCount);
writer.RenderEndTag();
if (!string.IsNullOrEmpty(TextAfterPageIndexBox))
writer.Write(TextAfterPageIndexBox);
}
}
}
/// <summary>
/// Get the navigation url for the paging button.
/// </summary>
/// <param name="pageIndex">the page index correspond to the button.</param>
/// <returns>href string for the paging navigation button.</returns>
private string GetHrefString(int pageIndex)
{
if (UrlPaging)
{
int urlPageIndex = pageIndex;
var plcHolder = "{" + UrlPageIndexName + "}";
if (ReverseUrlPageIndex)
{
urlPageIndex = pageIndex == -1 ? -1 : PageCount - pageIndex + 1;
}
if (EnableUrlRewriting)
{
string pattern = (pageIndex == 1&&!string.IsNullOrEmpty(FirstPageUrlRewritePattern)) ? FirstPageUrlRewritePattern : UrlRewritePattern;
Regex reg = new Regex("(?<p>%(?<m>[^%]+)%)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
MatchCollection mts = reg.Matches(pattern);
string prmValue;
NameValueCollection urlParams = ConvertQueryStringToCollection(queryString);
string url = pattern;
foreach (Match m in mts)
{
prmValue = urlParams[m.Groups["m"].Value];
//if (!string.IsNullOrEmpty(prmValue))
url = url.Replace(m.Groups["p"].Value, prmValue);
}
return ResolveUrl(string.Format(url, (urlPageIndex == -1) ? plcHolder : urlPageIndex.ToString()));
}
return BuildUrlString((urlPageIndex == -1) ? plcHolder : ((urlPageIndex == 1 && !ReverseUrlPageIndex)|| (ReverseUrlPageIndex && urlPageIndex == PageCount) ? null : urlPageIndex.ToString())); //changed on 2013-7-20
}
return Page.ClientScript.GetPostBackClientHyperlink(this, pageIndex.ToString());
}
/// <summary>
/// Replace the property placeholders in the CustomInfoHTML with the property values repectively
/// </summary>
/// <param name="origText">original CustomInfoHTML</param>
/// <returns></returns>
private string GetCustomInfoHtml(string origText)
{
if (!string.IsNullOrEmpty(origText) && origText.IndexOf('%') >= 0)
{
string[] props = new string[] { "recordcount", "pagecount", "currentpageindex", "startrecordindex", "endrecordindex", "pagesize", "pagesremain", "recordsremain" };
StringBuilder sb = new StringBuilder(origText);
Regex reg = new Regex("(?<ph>%(?<pname>\\w{8,})%)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
MatchCollection mts = reg.Matches(origText);
foreach (Match m in mts)
{
string p = m.Groups["pname"].Value.ToLower();
if (Array.IndexOf(props, p) >= 0)
{
string repValue = null;
switch (p)
{
case "recordcount":
repValue = RecordCount.ToString(); break;
case "pagecount":
repValue = PageCount.ToString(); break;
case "currentpageindex":
repValue = CurrentPageIndex.ToString(); break;
case "startrecordindex":
repValue = StartRecordIndex.ToString(); break;
case "endrecordindex":
repValue = EndRecordIndex.ToString(); break;
case "pagesize":
repValue = PageSize.ToString(); break;
case "pagesremain":
repValue = PagesRemain.ToString(); break;
case "recordsremain":
repValue = RecordsRemain.ToString(); break;
}
if (repValue != null)
sb.Replace(m.Groups["ph"].Value, repValue);
}
}
return sb.ToString();
}
return origText;
}
/// <summary>
/// Convert raw query string to NameValueCollection
/// </summary>
/// <param name="s">raw query string</param>
private static NameValueCollection ConvertQueryStringToCollection(string s)
{
NameValueCollection prms = new NameValueCollection();
int num = (s != null) ? s.Length : 0;
for (int i = 0; i < num; i++)
{
int startIndex = i;
int num4 = -1;
while (i < num)
{
char ch = s[i];
if (ch == '=')
{
if (num4 < 0)
{
num4 = i;
}
}
else if (ch == '&')
{
break;
}
i++;
}
string skey = null;
string svalue;
if (num4 >= 0)
{
skey = s.Substring(startIndex, num4 - startIndex);
svalue = s.Substring(num4 + 1, (i - num4) - 1);
}
else
{
svalue = s.Substring(startIndex, i - startIndex);
}
prms.Add(skey, svalue);
if ((i == (num - 1)) && (s[i] == '&'))
{
prms.Add(null, string.Empty);
}
}
return prms;
}
/// <summary>
/// add paging parameter and value to the current url or change parameter value if it already exists when using url paging mode
/// </summary>
/// <param name="pageIndex">page index parameter to be added</param>
/// <returns>href string for the navigattion button</returns>
private string BuildUrlString(string pageIndex)
{
StringBuilder ubuilder = new StringBuilder(80);
bool keyFound = false;
string amp = "";
if (!string.IsNullOrEmpty(queryString))
{
string[] prms = queryString.Split('&');
foreach (string pm in prms)
{
string[] nvArr = pm.Split('=');
string pName = nvArr[0];
if (!string.IsNullOrEmpty(pName))
{
if (pName.Equals(UrlPageIndexName, StringComparison.InvariantCultureIgnoreCase))
{
keyFound = true;
if (!string.IsNullOrEmpty(pageIndex))
{
ubuilder.Append(amp).Append(pName).Append("=").Append(pageIndex);
amp = "&";
}
}
else
{
ubuilder.Append(amp).Append(pName);
if (nvArr.Length > 1)
ubuilder.Append("=").Append(nvArr[1]);
amp = "&";
}
}
}
}
if (!keyFound && !string.IsNullOrEmpty(pageIndex))
{
ubuilder.Append(amp).Append(UrlPageIndexName).Append("=").Append(pageIndex);
//amp = "&";
}
if (ubuilder.Length > 0)
ubuilder.Insert(0, "?");
ubuilder.Insert(0, Path.GetFileName(currentUrl));
return ubuilder.ToString();
}
/// <summary>
/// Create first, prev, next or last button.
/// </summary>
/// <param name="writer">A <see cref="System.Web.UI.HtmlTextWriter"/> that represents the output stream to render HTML content on the client.</param>
/// <param name="btn">the navigation button</param>
private void CreateNavigationButton(HtmlTextWriter writer, NavigationButton btn)
{
if (!ShowFirstLast && (btn == NavigationButton.First || btn == NavigationButton.Last))
return;
if (!ShowPrevNext && (btn == NavigationButton.Prev || btn == NavigationButton.Next))
return;
if (PagingButtonLayoutType != PagingButtonLayoutType.None) //add css class and style attribute to pager item directly
{
if (btn == NavigationButton.First || btn == NavigationButton.Last) //first page or last page button
AddClassAndStyle(FirstLastButtonsClass, FirstLastButtonsStyle, writer);
else
AddClassAndStyle(PrevNextButtonsClass, PrevNextButtonsStyle, writer);//next page or prevous page button
}
string linktext;
bool disabled;
int pageIndex;
string btnname = btn.ToString().ToLower();
bool isImgBtn = (//PagingButtonType == PagingButtonType.Image &&
NavigationButtonType == PagingButtonType.Image);
if (btn == NavigationButton.First || btn == NavigationButton.Prev)
{
disabled = (CurrentPageIndex <= 1) | !Enabled;
if (!ShowDisabledButtons && disabled)
return;
AddPagingButtonLayoutTag(writer); //<li> or <span>
pageIndex = (btn == NavigationButton.First) ? 1 : (CurrentPageIndex - 1);
writeSpacingStyle(writer);
if (PagingButtonLayoutType == PagingButtonLayoutType.None) //add css class and style attribute to pager item directly
{
if (btn == NavigationButton.First || btn == NavigationButton.Last) //first page or last page button
AddClassAndStyle(FirstLastButtonsClass, FirstLastButtonsStyle, writer);
else
AddClassAndStyle(PrevNextButtonsClass, PrevNextButtonsStyle, writer);//next page or prevous page button
}
if (isImgBtn)
{
if (!disabled)
{
writer.AddAttribute("href", GetHrefString(pageIndex), false);
AddToolTip(writer, pageIndex);
AddHyperlinkTarget(writer);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.AddAttribute(HtmlTextWriterAttribute.Src,
String.Concat(ImagePath, btnname, ButtonImageNameExtension,
ButtonImageExtension));
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
else
{
writer.AddAttribute(HtmlTextWriterAttribute.Src,
String.Concat(ImagePath, btnname, DisabledButtonImageNameExtension,
ButtonImageExtension));
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
}
}
else
{
linktext = (btn == NavigationButton.Prev) ? PrevPageText : FirstPageText;
if (disabled)
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
else
{
//WriteCssClass(writer);
AddToolTip(writer, pageIndex);
AddHyperlinkTarget(writer);
writer.AddAttribute("href", GetHrefString(pageIndex), false);
}
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(linktext);
writer.RenderEndTag();
}
}
else
{
disabled = (CurrentPageIndex >= PageCount) | !Enabled;
if (!ShowDisabledButtons && disabled)
return;
AddPagingButtonLayoutTag(writer); //<li> or <span>
pageIndex = (btn == NavigationButton.Last) ? PageCount : (CurrentPageIndex + 1);
writeSpacingStyle(writer);
if (PagingButtonLayoutType == PagingButtonLayoutType.None) //add css class and style attribute to pager item directly
{
if (btn == NavigationButton.First || btn == NavigationButton.Last) //first page or last page button
AddClassAndStyle(FirstLastButtonsClass, FirstLastButtonsStyle, writer);
else
AddClassAndStyle(PrevNextButtonsClass, PrevNextButtonsStyle, writer);//next page or prevous page button
}
if (isImgBtn)
{
if (!disabled)
{
writer.AddAttribute("href", GetHrefString(pageIndex), false);
AddToolTip(writer, pageIndex);
AddHyperlinkTarget(writer);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.AddAttribute(HtmlTextWriterAttribute.Src,
String.Concat(ImagePath, btnname, ButtonImageNameExtension,
ButtonImageExtension));
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
else
{
writer.AddAttribute(HtmlTextWriterAttribute.Src,
String.Concat(ImagePath, btnname, DisabledButtonImageNameExtension,
ButtonImageExtension));
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
}
}
else
{
linktext = (btn == NavigationButton.Next) ? NextPageText : LastPageText;
if (disabled)
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
else
{
//WriteCssClass(writer);
AddToolTip(writer, pageIndex);
writer.AddAttribute("href", GetHrefString(pageIndex), false);
AddHyperlinkTarget(writer);
}
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(linktext);
writer.RenderEndTag();
}
}
if (PagingButtonLayoutType != PagingButtonLayoutType.None)
writer.RenderEndTag(); //</li> or </span>
}
/// <summary>
/// Write css class name.
/// </summary>
/// <param name="writer">A <see cref="System.Web.UI.HtmlTextWriter"/> that represents the output stream to render HTML content on the client. </param>
//private void WriteCssClass(HtmlTextWriter writer)
//{
// if (cssClassName != null && cssClassName.Trim().Length > 0)
// writer.AddAttribute(HtmlTextWriterAttribute.Class, cssClassName);
//}
/// <summary>
/// Add tool tip text to navigation button.
/// </summary>
private void AddToolTip(HtmlTextWriter writer, int pageIndex)
{
if (ShowNavigationToolTip)
{
writer.AddAttribute(HtmlTextWriterAttribute.Title, String.Format(NavigationToolTipTextFormatString, pageIndex));
}
}
/// <summary>
/// add paging button layout tag
/// </summary>
private void AddPagingButtonLayoutTag(HtmlTextWriter writer)
{
if (PagingButtonLayoutType == PagingButtonLayoutType.UnorderedList)
writer.RenderBeginTag(HtmlTextWriterTag.Li); //<li>
else if (PagingButtonLayoutType == PagingButtonLayoutType.Span)
writer.RenderBeginTag(HtmlTextWriterTag.Span); //<span>
}
/// <summary>
/// Create numeric paging button.
/// </summary>
/// <param name="writer">A <see cref="System.Web.UI.HtmlTextWriter"/> that represents the output stream to render HTML content on the client.</param>
/// <param name="index">the page index correspond to the paging button</param>
private void CreateNumericButton(HtmlTextWriter writer, int index)
{
bool isCurrent = (index == CurrentPageIndex);
if ((!isCurrent && PagingButtonLayoutType != PagingButtonLayoutType.None) || (isCurrent && PagingButtonLayoutType == PagingButtonLayoutType.UnorderedList)) //current page button already wrapped in span
{
if (!isCurrent) //exclude current page index button
AddClassAndStyle(PagingButtonsClass, PagingButtonsStyle, writer);
AddPagingButtonLayoutTag(writer); //<li>
}
if (/*PagingButtonType == PagingButtonType.Image && */NumericButtonType == PagingButtonType.Image)
{
writeSpacingStyle(writer);
if (!isCurrent)
{
if (Enabled)
writer.AddAttribute("href", GetHrefString(index), false);
//if (PagingButtonLayoutType == PagingButtonLayoutType.None) //add css class and style attribute to hyper link directly
AddClassAndStyle(PagingButtonsClass, PagingButtonsStyle, writer);
AddToolTip(writer, index);
AddHyperlinkTarget(writer);
writer.RenderBeginTag(HtmlTextWriterTag.A);
CreateNumericImages(writer, index, false);
writer.RenderEndTag();
}
else
{
if (!string.IsNullOrEmpty(CurrentPageButtonClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, CurrentPageButtonClass);
if (!string.IsNullOrEmpty(CurrentPageButtonStyle))
writer.AddAttribute(HtmlTextWriterAttribute.Style, CurrentPageButtonStyle);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
CreateNumericImages(writer, index, true);
writer.RenderEndTag();
}
}
else
{
writeSpacingStyle(writer);
if (isCurrent)
{
if (string.IsNullOrEmpty(CurrentPageButtonClass) && string.IsNullOrEmpty(CurrentPageButtonStyle))
{
writer.AddStyleAttribute(HtmlTextWriterStyle.FontWeight, "Bold");
writer.AddStyleAttribute(HtmlTextWriterStyle.Color, "red");
}
else
{
if (!string.IsNullOrEmpty(CurrentPageButtonClass))
writer.AddAttribute(HtmlTextWriterAttribute.Class, CurrentPageButtonClass);
if (!string.IsNullOrEmpty(CurrentPageButtonStyle))
writer.AddAttribute(HtmlTextWriterAttribute.Style, CurrentPageButtonStyle);
}
writer.RenderBeginTag(HtmlTextWriterTag.Span);
if (!string.IsNullOrEmpty(CurrentPageButtonTextFormatString))
writer.Write(String.Format(CurrentPageButtonTextFormatString, index));
else
writer.Write(index);
writer.RenderEndTag();
}
else
{
if (Enabled)
{
writer.AddAttribute("href", GetHrefString(index), false);
AddClassAndStyle(PagingButtonsClass, PagingButtonsStyle, writer); //add css class and style
}
//WriteCssClass(writer);
AddToolTip(writer, index);
AddHyperlinkTarget(writer);
writer.RenderBeginTag(HtmlTextWriterTag.A);
if (!string.IsNullOrEmpty(NumericButtonTextFormatString))
writer.Write(String.Format(NumericButtonTextFormatString, index));
else
writer.Write(index);
writer.RenderEndTag();
}
}
if ((!isCurrent && PagingButtonLayoutType != PagingButtonLayoutType.None) || (isCurrent && PagingButtonLayoutType == PagingButtonLayoutType.UnorderedList))
writer.RenderEndTag(); //</li>
}
/// <summary>
/// Create numeric image button.
/// </summary>
/// <param name="writer">A <see cref="System.Web.UI.HtmlTextWriter"/> that represents the output stream to render HTML content on the client.</param>
/// <param name="index">the page index correspond to the button.</param>
/// <param name="isCurrent">if the page index correspond to the button is the current page index</param>
private void CreateNumericImages(HtmlTextWriter writer, int index, bool isCurrent)
{
AddPagingButtonLayoutTag(writer); //<li> or <span>
string indexStr = index.ToString();
for (int i = 0; i < indexStr.Length; i++)
{
writer.AddAttribute(HtmlTextWriterAttribute.Src, String.Concat(ImagePath, indexStr[i], (isCurrent) ? CpiButtonImageNameExtension : ButtonImageNameExtension, ButtonImageExtension));
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
}
if (PagingButtonLayoutType != PagingButtonLayoutType.None)
writer.RenderEndTag(); //</li> or </span>
}
/// <summary>
/// create more (...) button.
/// </summary>
private void CreateMoreButton(HtmlTextWriter writer, int pageIndex)
{
AddClassAndStyle(MoreButtonsClass, MoreButtonsStyle, writer);
AddPagingButtonLayoutTag(writer); //<li> or <span>
writeSpacingStyle(writer);
if (Enabled)
{
writer.AddAttribute("href", GetHrefString(pageIndex), false);
AddToolTip(writer, pageIndex);
AddHyperlinkTarget(writer);
}
writer.RenderBeginTag(HtmlTextWriterTag.A); //<a>
if ( /*PagingButtonType == PagingButtonType.Image && */MoreButtonType == PagingButtonType.Image)
{
writer.AddAttribute(HtmlTextWriterAttribute.Src,
String.Concat(ImagePath, "more", ButtonImageNameExtension, ButtonImageExtension));
writer.AddAttribute(HtmlTextWriterAttribute.Border, "0");
if (ButtonImageAlign != ImageAlign.NotSet)
writer.AddAttribute(HtmlTextWriterAttribute.Align, ButtonImageAlign.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img); //<img>
writer.RenderEndTag(); //</img>
}
else
writer.Write("...");
writer.RenderEndTag(); //</a>
if (PagingButtonLayoutType != PagingButtonLayoutType.None)
writer.RenderEndTag(); //</li> or </span>
}
/// <summary>
/// Add paging button spacing styles to HtmlTextWriter
/// </summary>
private void writeSpacingStyle(HtmlTextWriter writer)
{
if (PagingButtonSpacing.Value != 0)
writer.AddStyleAttribute(HtmlTextWriterStyle.MarginRight, PagingButtonSpacing.ToString());
}
/// <summary>
/// add target attribute to paging hyperlink
/// </summary>
private void AddHyperlinkTarget(HtmlTextWriter writer)
{
if (!string.IsNullOrEmpty(UrlPagingTarget))
writer.AddAttribute(HtmlTextWriterAttribute.Target, UrlPagingTarget);
}
/// <summary>
/// add css class and style attribute to HtmlTextWriter
/// </summary>
private void AddClassAndStyle(string clsname, string style, HtmlTextWriter writer)
{
if (!string.IsNullOrEmpty(clsname))
writer.AddAttribute(HtmlTextWriterAttribute.Class, clsname);
if (!string.IsNullOrEmpty(style))
writer.AddAttribute(HtmlTextWriterAttribute.Style, style);
}
#endregion
}
}
