一步一步webpart-创新显示指定文档库最新的文件列表的WebPart(5)

一.说明:

•创建一个显示指定文档库最新的文件列表的WebPart
•在WebPart定义可在浏览时让用户自行调整的属性
•在WebPart中访问SharePoint Object Model
二.开始创建
2.1新建项目"WebPartLibrary2"
2.2新建WebPart2.cs代码如下:






using System;


using System.ComponentModel;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Xml.Serialization;


using Microsoft.SharePoint;


using Microsoft.SharePoint.Utilities;


using Microsoft.SharePoint.WebPartPages;


using Microsoft.SharePoint.WebControls;//自己导入


namespace WebPartLibrary2






{




/**//// <summary>


/// Description for WebPart2.


/// </summary>


[DefaultProperty("Text"),


ToolboxData("<{0}:WebPart2 runat=server></{0}:WebPart2>"),


XmlRoot(Namespace="WebPartLibrary2")]


public class WebPart2 : Microsoft.SharePoint.WebPartPages.WebPart






{




自动生成#region 自动生成


private const string defaultText = "";




private string text = defaultText;




[Browsable(true),


Category("Miscellaneous"),


DefaultValue(defaultText),


WebPartStorage(Storage.Personal),


FriendlyName("Text"),


Description("Text Property")]


public string Text






{


get






{


return text;


}




set






{


text = value;


}


}







/**//// <summary>


/// This method gets the custom tool parts for this Web Part by overriding the


/// GetToolParts method of the WebPart base class. You must implement


/// custom tool parts in a separate class that derives from


/// Microsoft.SharePoint.WebPartPages.ToolPart.


/// </summary>


///<returns>An array of references to ToolPart objects.</returns>


// public override ToolPart[] GetToolParts()


// {


// ToolPart[] toolparts = new ToolPart[2];


// WebPartToolPart wptp = new WebPartToolPart();


// CustomPropertyToolPart custom = new CustomPropertyToolPart();


// toolparts[0] = wptp;


// toolparts[1] = custom;


// return toolparts;


// }


#endregion


//一.创建属性 “ListName”


private String _sListName = "共享文档";




[Browsable(true),//此属性是否在（页面中的）属性Panel中显示出来


Category("设置"),//属性的类别


DefaultValue(""),//属性的（此WebPart的所有页面实例的）默认值


WebPartStorage(Storage.Personal),//枚举，Storage.Shared表示所有用户共享一个值，Storage.Personal为每个用户保存单独的值，Storage.None不保存


FriendlyName("文档库名称"),//显示在属性Panel中的名称


Description("要显示的文档库的名称")]//显示在属性Panel中的提示


public string ListName






{




get

{ return _sListName; }




set

{ _sListName = value; }


}


//二.创建属性 “DisplayCount”


private UInt32 _iDisplayCount = 10;




[Browsable(true),


Category("设置"),


DefaultValue(10),


WebPartStorage(Storage.Personal),


FriendlyName("显示文件数量"),


Description("可显示的文件的最大数量")]


public UInt32 DisplayCount






{




get

{ return _iDisplayCount; }




set

{ _iDisplayCount = value; }


}




/**//// <summary>


///三. 访问指定文档库中文件的Method


/// </summary>


/// <returns></returns>


private String GetListFiles()






{


String result = "";


if ((this.ListName != null) && (this.ListName.Length > 0))






{


SPQuery query = new SPQuery();


query.Query = "<OrderBy><FieldRef Name=/"修改时间/" Ascending=/"FALSE/" /></OrderBy>";


query.RowLimit = this.DisplayCount;


SPList list = SPControl.GetContextWeb(this.Context).Lists[this.ListName];


foreach(SPListItem item in list.GetItems(query))






{


if (item.File != null)






{


result += "<li><a href='" + item.File.Url + "'>" + item.File.Name + "(" + item.File.Author.Name + ")" + "</a><br>";


}


}


}


return result;


}




/**//// <summary>


/// 四.调用GetListFiles()所返回的String来输出内容


/// </summary>


/// <param name="output"> The HTML writer to write out to </param>


protected override void RenderWebPart(HtmlTextWriter output)






{


output.Write(this.GetListFiles());


}




}


}



2.3新建并配置WebPart2.dwp,修改WebPart2.dwp文件代码如下:






<?xml version="1.0" encoding="utf-8"?>


<WebPart xmlns="http://schemas.microsoft.com/WebPart/v2" >


<Title>李燕平的webpart2</Title>


<Description>第二个webpart</Description>


<Assembly>WebPartLibrary2</Assembly>


<TypeName>WebPartLibrary2.WebPart2</TypeName>


<!-- Specify initial values for any additional base class or custom properties here. -->


</WebPart>





2.4修改SPS虚拟站点的web.confi文件
增加<SafeControl Assembly="WebPartLibrary2" Namespace="WebPartLibrary2" TypeName="*" Safe="True" />
修改 <trust level="WSS_Minimal" originUrl="" />为<trust level="WSS_Medium" originUrl="" />

2.5将WebPartLibrary2.dll拷贝到 SPS虚拟站点根目录的“bin”目录中
2.6导入webpart ( 参见一步一步webpart-如何利用.net***第一个webpart?(3) )
2.7将导入的webpart显示到页面(参见一步一步webpart-如何利用已导入的webpart?(4) )
....显示出现错误,修改中......