SdaiBuyWebUI PageControl.cs
using System;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace SdaiBuyWebUI
{
[
DefaultProperty("PageIndex"),
ToolboxData("<{0}:PageControl runat=server></{0}:PageControl>")
]
public class PageControl : WebControl
{
[
Bindable(true),
Category("数据"),
DefaultValue("5"),
Localizable(true),
Description("每页条数")
]
public int PageSize
{
get
{
if (ViewState["PageSize"] == null)
{
return 5;
}
else
{
return (int)ViewState["PageSize"];
}
}
set
{
if (value > 0)
{
ViewState["PageSize"] = value;
}
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("1"),
Localizable(true),
Description("当前页码")
]
public int PageIndex
{
get
{
if (ViewState["PageIndex"] == null)
{
return 1;
}
else
{
return (int)ViewState["PageIndex"];
}
}
set
{
if (PageCount == 0 || (value >= 1 && value <= PageCount))
{
ViewState["PageIndex"] = value;
}
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("1"),
Localizable(true),
Description("总页数,设为0则由系统自动计算")
]
public int PageCount
{
get
{
if (ViewState["PageCount"] == null)
{
return 1;
}
else
{
return (int)ViewState["PageCount"];
}
}
set
{
if (value >= 0)
{
ViewState["PageCount"] = value;
}
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("1"),
Localizable(true),
Description("数据总条数")
]
public int Count
{
get
{
if (ViewState["Count"] == null)
{
return 1;
}
else
{
return (int)ViewState["Count"];
}
}
set
{
if (value >= 0)
{
ViewState["Count"] = value;
}
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("page"),
Localizable(true),
Description("页码参数")
]
public string PageIndexParameter
{
get
{
if (ViewState["PageIndexParameter"] == null)
{
return "page";
}
else
{
return (string)ViewState["PageIndexParameter"];
}
}
set
{
if (value.Trim() != string.Empty)
{
ViewState["PageIndexParameter"] = value;
}
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("当前页Url"),
Localizable(true),
Description("页Url")
]
public string PageUrl
{
get
{
if (ViewState["PageUrl"] == null)
{
return string.Empty;
}
else
{
return (string)ViewState["PageUrl"];
}
}
set
{
ViewState["PageUrl"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示基本信息")
]
public bool ShowBasicInfo
{
get
{
if (ViewState["ShowBasicInfo"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowBasicInfo"];
}
}
set
{
ViewState["ShowBasicInfo"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示首页")
]
public bool ShowFirstPageUrl
{
get
{
if (ViewState["ShowFirstPageUrl"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowFirstPageUrl"];
}
}
set
{
ViewState["ShowFirstPageUrl"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示上一页")
]
public bool ShowPreviousPageUrl
{
get
{
if (ViewState["ShowPreviousPageUrl"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowPreviousPageUrl"];
}
}
set
{
ViewState["ShowPreviousPageUrl"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示下一页")
]
public bool ShowNextPageUrl
{
get
{
if (ViewState["ShowNextPageUrl"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowNextPageUrl"];
}
}
set
{
ViewState["ShowNextPageUrl"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示最后一页")
]
public bool ShowLastPageUrl
{
get
{
if (ViewState["ShowLastPageUrl"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowLastPageUrl"];
}
}
set
{
ViewState["ShowLastPageUrl"] = value;
}
}
[
Bindable(true),
Category("数据"),
DefaultValue("0"),
Localizable(true),
Description("显示相邻几页,0为全部显示")
]
public int NearPageCount
{
get
{
if (ViewState["NearPageCount"] == null)
{
return 5;
}
else
{
int i = (int)ViewState["NearPageCount"];
if (i >= 0)
{
return i;
}
else
{
return 0;
}
}
}
set
{
if (value >= 0)
{
ViewState["NearPageCount"] = value;
}
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("第{0}页/共{1}页,共{2}条记录"),
Localizable(true),
Description("基本信息显示方式"),
]
public string BasicInfoFormat
{
get
{
if (ViewState["BasicInfoFormat"] == null)
{
return "第{0}页/共{1}页,共{2}条记录";
}
else
{
return (string)ViewState["BasicInfoFormat"];
}
}
set
{
ViewState["BasicInfoFormat"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("{0}"),
Localizable(true),
Description("数字页显示方式"),
]
public string PageInfoFormat
{
get
{
if (ViewState["PageInfoFormat"] == null)
{
return "{0}";
}
else
{
return (string)ViewState["PageInfoFormat"];
}
}
set
{
ViewState["PageInfoFormat"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("未找到任何记录！"),
Localizable(true),
Description("无记录时显示的文字"),
]
public string NoCountString
{
get
{
if (ViewState["NoCountString"] == null)
{
return "未找到任何记录！";
}
else
{
return (string)ViewState["NoCountString"];
}
}
set
{
ViewState["NoCountString"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示下拉框"),
]
public bool ShowDropDownList
{
get
{
if (ViewState["ShowDropDownList"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowDropDownList"];
}
}
set
{
ViewState["ShowDropDownList"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("是否显示文本框"),
]
public bool ShowTextBox
{
get
{
if (ViewState["ShowTextBox"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowTextBox"];
}
}
set
{
ViewState["ShowTextBox"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("转到"),
Localizable(true),
Description("转到第几页的按钮上的文本"),
]
public string ButtonText
{
get
{
if (ViewState["ButtonText"] == null)
{
return "转到";
}
else
{
return (string)ViewState["ButtonText"];
}
}
set
{
ViewState["ButtonText"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("true"),
Localizable(true),
Description("未填入数字时，是否提示"),
]
public bool ShowPrompt
{
get
{
if (ViewState["ShowPrompt"] == null)
{
return true;
}
else
{
return (bool)ViewState["ShowPrompt"];
}
}
set
{
ViewState["ShowPrompt"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("请输入正确的页码！"),
Localizable(true),
Description("填写错误时提示的内容"),
]
public string PromptText
{
get
{
if (ViewState["PromptText"] == null)
{
return "请输入正确的页码！";
}
else
{
return (string)ViewState["PromptText"];
}
}
set
{
ViewState["PromptText"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("首页"),
Localizable(true),
Description("第一页显示的文本"),
]
public string FirstPageText
{
get
{
if (ViewState["FirstPageText"] == null)
{
return "首页";
}
else
{
return (string)ViewState["FirstPageText"];
}
}
set
{
ViewState["FirstPageText"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("上一页"),
Localizable(true),
Description("上一页显示的文本"),
]
public string PreviousPageText
{
get
{
if (ViewState["PreviousPageText"] == null)
{
return "上一页";
}
else
{
return (string)ViewState["PreviousPageText"];
}
}
set
{
ViewState["PreviousPageText"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("下一页"),
Localizable(true),
Description("下一页显示的文本"),
]
public string NextPageText
{
get
{
if (ViewState["NextPageText"] == null)
{
return "下一页";
}
else
{
return (string)ViewState["NextPageText"];
}
}
set
{
ViewState["NextPageText"] = value;
}
}
[
Bindable(true),
Category("外观"),
DefaultValue("末页"),
Localizable(true),
Description("末页显示的文本"),
]
public string LastPageText
{
get
{
if (ViewState["LastPageText"] == null)
{
return "末页";
}
else
{
return (string)ViewState["LastPageText"];
}
}
set
{
ViewState["LastPageText"] = value;
}
}
protected override void RenderContents(HtmlTextWriter output)
{
if (Count > 0)
{
if (PageCount == 0)
{
PageCount = (Count - 1) / PageSize + 1;
}
if (ShowBasicInfo)
{
output.Write(string.Format(BasicInfoFormat, PageIndex, PageCount, Count));
output.Write(" ");
}
#region 链接选页
if (ShowFirstPageUrl)
{
WritePageUrl(output, 1, FirstPageText);
output.Write(" ");
}
if (ShowPreviousPageUrl)
{
WritePageUrl(output, PageIndex - 1, PreviousPageText);
output.Write(" ");
}
if (NearPageCount == 0)
{
for (int i = 1; i <= PageCount; i++)
{
if (i != PageIndex)
{
WritePageUrl(output, i, string.Format(PageInfoFormat, i));
}
else
{
output.Write(i.ToString());
}
output.Write(" ");
}
}
else
{
for (int i = PageIndex - NearPageCount; i <= PageIndex + NearPageCount; i++)
{
if (i >= 1 && i <= PageCount)
{
if (i != PageIndex)
{
WritePageUrl(output, i, string.Format(PageInfoFormat, i));
}
else
{
output.Write(i.ToString());
}
output.Write(" ");
}
}
}
if (ShowNextPageUrl)
{
WritePageUrl(output, PageIndex + 1, NextPageText);
output.Write(" ");
}
if (ShowLastPageUrl)
{
WritePageUrl(output, PageCount, LastPageText);
output.Write(" ");
}
#endregion
#region 下拉框选页
if (ShowDropDownList)
{
output.AddAttribute(HtmlTextWriterAttribute.Onchange, "javascript:location.href=this.value;");
output.RenderBeginTag(HtmlTextWriterTag.Select);
for (int i = 1; i <= PageCount; i++)
{
output.AddAttribute(HtmlTextWriterAttribute.Value, ReplaceParamentFromUrl(PageUrl, PageIndexParameter) + PageIndexParameter + "=" + i.ToString());
if (i == PageIndex)
{
output.AddAttribute(HtmlTextWriterAttribute.Selected, "selected");
}
output.RenderBeginTag(HtmlTextWriterTag.Option);
output.Write(string.Format(PageInfoFormat, i));
output.RenderEndTag();
}
output.RenderEndTag();
output.Write(" ");
}
#endregion
#region 文本框选页
if (ShowTextBox)
{
output.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "txtPageIndex");
output.AddAttribute(HtmlTextWriterAttribute.Type, "text");
output.AddAttribute(HtmlTextWriterAttribute.Value, PageIndex.ToString());
output.AddAttribute("onkeypress", UniqueID + "IsNumber()");
output.AddStyleAttribute(HtmlTextWriterStyle.Width, "30px");
output.RenderBeginTag(HtmlTextWriterTag.Input);
output.RenderEndTag();
output.AddAttribute(HtmlTextWriterAttribute.Type, "button");
output.AddAttribute(HtmlTextWriterAttribute.Value, ButtonText);
output.AddAttribute(HtmlTextWriterAttribute.Onclick, UniqueID + "GoPage()");
output.RenderBeginTag(HtmlTextWriterTag.Input);
output.RenderEndTag();
}
#endregion
}
else
{
output.Write(NoCountString);
}
}
/// <summary>
/// 输出一个页的链接
/// </summary>
private void WritePageUrl(HtmlTextWriter writer, int pageIndex, string Descn)
{
if (pageIndex < 1)
{
pageIndex = 1;
}
if (pageIndex > PageCount)
{
pageIndex = PageCount;
}
writer.AddAttribute(HtmlTextWriterAttribute.Href, ReplaceParamentFromUrl(PageUrl, PageIndexParameter) + PageIndexParameter + "=" + pageIndex.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(Descn);
writer.RenderEndTag();
}
protected override void Render(HtmlTextWriter writer)
{
base.Render(writer);
if (ShowTextBox)
{
writer.WriteLine(GetScript());
}
}
protected string GetScript()
{
StringBuilder script = new StringBuilder();
script.AppendLine("<script type=/"text/javascript/">");
script.AppendLine(string.Format("function {0}IsNumber()", UniqueID));
script.AppendLine("{");
script.AppendLine(" if((event.keyCode>57||event.keyCode<48)&&event.keyCode!=46&&event.keyCode!=13)");
script.AppendLine(" event.keyCode=0;");
script.AppendLine(" if(event.keyCode==13)");
script.AppendLine(string.Format(" {0}GoPage();", UniqueID));
script.AppendLine("}");
script.AppendLine(string.Format("function {0}GoPage()", UniqueID));
script.AppendLine("{");
script.AppendLine(string.Format(" var pageIndex=document.getElementById(/"{0}txtPageIndex/").value;", UniqueID));
if (ShowPrompt)
{
script.AppendLine(string.Format(" if(pageIndex==/"/" || pageIndex<1 || pageIndex>{0})", PageCount));
script.AppendLine(string.Format(" alert(/"{0}/");", PromptText));
script.AppendLine(" else");
}
script.AppendLine(string.Format(" location=/"{0}{1}=/"+pageIndex;", ReplaceParamentFromUrl(PageUrl, PageIndexParameter), PageIndexParameter));
script.AppendLine("}");
script.AppendLine("</script>");
return script.ToString();
}
/// <summary>
/// 数据绑定
/// </summary>
/// <param name="pageIndex">当前第几页</param>
/// <param name="pageSize">每页条数</param>
/// <param name="count">数据条数</param>
/// <param name="pageCount">页数</param>
/// <param name="pageUrl">页Url,为Null表示当前页</param>
/// <param name="pageIndexParameter">页Page参数</param>
public void Bind(int pageIndex, int pageSize, int count, int pageCount, string pageUrl, string pageIndexParameter)
{
Count = count;
PageSize = pageSize;
PageCount = pageCount;
PageIndex = pageIndex;
if (!string.IsNullOrEmpty(pageUrl))
{
PageUrl = pageUrl;
}
else
{
PageUrl = this.Page.Request.Url.ToString();
}
PageIndexParameter = pageIndexParameter;
}
/// <summary>
/// 数据绑定
/// </summary>
/// <param name="pageIndex">当前第几页</param>
/// <param name="pageSize">每页条数</param>
/// <param name="count">数据条数</param>
/// <param name="pageUrl">页Url,为Null表示当前页</param>
/// <param name="pageIndexParameter">页Page参数</param>
public void Bind(int pageIndex, int pageSize, int count, string pageUrl, string pageIndexParameter)
{
Bind(pageIndex, pageSize, count, 0, pageUrl, pageIndexParameter);
}
/// <summary>
/// 将标识第几页的参数提出来后，返回新的Url
/// </summary>
private string ReplaceParamentFromUrl(string url, string throwParameter)
{
string newUrl = url;
if (url.IndexOf('?') > 0)
{
newUrl = url.Remove(url.IndexOf('?'));
newUrl += "?";
url = url.Substring(url.IndexOf('?') + 1);
foreach (string parameter in url.Split(new Char[] { '&' }, StringSplitOptions.RemoveEmptyEntries))
{
if (parameter.Remove(parameter.IndexOf('=')).ToLower() != throwParameter.ToLower())
newUrl += parameter + "&";
}
}
else
newUrl += "?";
return newUrl;
}
}
}