模仿文档库样式的webpart

/// <summary>
 /// 添加ViewToolBar
 /// </summary>
 private void addViewToolbar()
 {
 _toolbar = new ViewToolBar();
 SPContext context = SPContext.GetContext(this.Context, _spview.ID, SPContext.Current.List.ID, SPContext.Current.Web);
 toolbar.RenderContext = context;
 Controls.Add(toolbar);
 }

/// <summary>
 /// 添加ListViewWebPart
 /// </summary>
 private void addListViewWebPart()
 {
 _lvwp = new ListViewWebPart();
 lvwp.ListName = SPContext.Current.List.ID.ToString("B").ToUpper();
 lvwp.ViewGuid = _spview.ID.ToString("B").ToUpper();
 lvwp.ViewType = ViewType.Html;
 Controls.Add(lvwp);
 }

using System;
using System.Runtime.InteropServices;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Serialization;
using System.Xml;

using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Microsoft.SharePoint.WebPartPages;

using CodeArt.SharePoint.CamlQuery;

namespace MainPage
{
 [Guid("03580f1e-5fa4-467b-b7e9-3a4caa0563a1")]
 public class VirusSmartQueryWebPart :BaseSPWebPart
 {
 private ICamlProvider _CamlProvider;
 private string _LayoutControlPath = "";

 private ViewToolBar _toolbar = null;
 private ListViewWebPart _lvwp = null;
 private SPView _spview = null;

 public VirusSmartQueryWebPart()
 {
 _spview = SPContext.Current.List.DefaultView;
 }
 private void ChangeSchemaXmlQuery(XmlDocument doc, string query)
 {
 if (!string.IsNullOrEmpty(query))
 {
 string innerQuery = this.GetInnerQuery(query);
 if (innerQuery != "")
 {
 XmlNode node = doc.DocumentElement.SelectSingleNode("Query");
 XmlNode oldChild = node.SelectSingleNode("Where");
 if (oldChild != null)
 {
 node.RemoveChild(oldChild);
 }
 XmlNode newChild = doc.CreateElement("Where");
 newChild.InnerXml = innerQuery;
 node.AppendChild(newChild);
 doc.DocumentElement.SelectSingleNode("ViewEmpty").InnerXml = "<HTML><![CDATA[AA Say:未找到符合查询条件的记录]]></HTML>";
 }
 }
 }
 protected override void CreateChildControls()
 {
 base.CreateChildControls();
 if (_toolbar == null)
 {
 addViewToolbar();
 }
 if (_lvwp == null)
 {
 addListViewWebPart();
 }
 QueryField title = new QueryField("Title");

 this.SetCurrentListViewSchemaQuery(CamlBuilder.Where(title.Contains("1")));

 try
 {
 if (!string.IsNullOrEmpty(this._LayoutControlPath))
 {
 Control child = this.Page.LoadControl(this._LayoutControlPath);
 this._CamlProvider = child as ICamlProvider;
 this.Controls.Add(child);
 }
 else
 {
 base.RegisterShowToolPanelControl("请打开工具窗格", "设置“布局控件路径（LayoutControlPath）”", "如“~/_CONTROLTEMPLATES/CodeArt_ExampleQueryLayout.ascx");
 }
 }
 catch (Exception exception)
 {
 base.RegisterError(exception);
 }
 // TODO: add custom rendering code here.
 // Label label = new Label();
 // label.Text = "Hello World";
 // this.Controls.Add(label);
 }
 private string GetInnerQuery(string q)
 {
 XmlDocument document = new XmlDocument();
 document.LoadXml(q);
 return document.DocumentElement.InnerXml;
 }

 protected override void OnInit(EventArgs e)
 {
 base.OnInit(e);
 this.EnableViewState = true;
 this.EnsureChildControls();
 }

 protected override void OnLoad(EventArgs e)
 {
 base.OnLoad(e);
 if (this.Page.IsPostBack)
 {
 //CamlExpression expr = null;
 //try
 //{
 // expr = this.QueryExpression;
 //}
 //catch (Exception exception)
 //{
 // base.RegisterError(exception);
 // return;
 //}
 //if (expr != null)
 //{
 // string qxml = CamlBuilder.Where(this.List, expr);
 // this.SetCurrentListViewSchemaQuery(qxml);
 //}
 QueryField targetTo = new QueryField("TargetTo");
 QueryField title = new QueryField("Title");

 this.SetCurrentListViewSchemaQuery(CamlBuilder.Where(title.Contains("1")));

 }
 }
 /// <summary>
 /// 添加ViewToolBar
 /// </summary>
 private void addViewToolbar()
 {
 _toolbar = new ViewToolBar();
 SPContext context = SPContext.GetContext(this.Context, _spview.ID, SPContext.Current.List.ID, SPContext.Current.Web);
 toolbar.RenderContext = context;
 Controls.Add(toolbar);
 }
 /// <summary>
 /// 添加ListViewWebPart
 /// </summary>
 private void addListViewWebPart()
 {
 _lvwp = new ListViewWebPart();
 lvwp.ListName = SPContext.Current.List.ID.ToString("B").ToUpper();
 lvwp.ViewGuid = _spview.ID.ToString("B").ToUpper();
 lvwp.ViewType = ViewType.Html;
 Controls.Add(lvwp);
 }
 private void SetCurrentListViewSchemaQuery(string qxml)
 {
 if (!string.IsNullOrEmpty(qxml))
 {
 string strB = "{" + this.List.ID.ToString() + "}";
 foreach (System.Web.UI.WebControls.WebParts.WebPart part in base.Zone.WebParts)
 {
 if (part is ListViewWebPart)
 {
 ListViewWebPart part2 = (ListViewWebPart)part;
 if (string.Compare(part2.ListName, strB, true) != 0)
 {
 continue;
 }
 if (string.IsNullOrEmpty(qxml))
 {
 part2.ListViewXml = this.List.Views[new Guid(part2.ViewGuid)].HtmlSchemaXml;
 }
 else
 {
 XmlDocument doc = new XmlDocument();
 doc.LoadXml(part2.ListViewXml);
 this.ChangeSchemaXmlQuery(doc, qxml);
 part2.ListViewXml = doc.InnerXml;
 }
 return;
 }
 }
 }
 }

 [Personalizable(PersonalizationScope.Shared), WebBrowsable]
 public string LayoutControlPath
 {
 get
 {
 return this._LayoutControlPath;
 }
 set
 {
 this._LayoutControlPath = value;
 }
 }

 private SPList List
 {
 get
 {
 return SPContext.Current.List;
 }
 }

 public CamlExpression QueryExpression
 {
 get
 {
 this.EnsureChildControls();
 if (this._CamlProvider != null)
 {
 return this._CamlProvider.QueryExpression;
 }
 return null;
 }
 }
 }
}

下面是上面用到的BaseSPWebPart和ICamlProvider的源代码，是我反编译了园子中jianyi0115的SmartQuery之后的代码，谢谢了
关于CamlQuery和SmartQuery的详细信息可以访问，这两个是作者写的caml辅助工具和列表查询（目前是单列表，希望作者可以升级为兼容多个列表的查询）辅助工具.
http://www.cnblogs.com/jianyi0115/archive/2008/02/15/1070158.html

Code

using System;
using System.Runtime.InteropServices;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Serialization;
using System.Xml;
using System.Collections.Generic;

using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Microsoft.SharePoint.WebPartPages;

using CodeArt.SharePoint.CamlQuery;

namespace MainPage
{
 [Guid("03580f1e-5fa4-467b-b7e9-3a4caa0563a1")]
 public class VirusSmartQueryWebPart : System.Web.UI.WebControls.WebParts.WebPart
 {
 private QueryField _bulletinTitle;
 private QueryField _bulletinContent;
 private QueryField _bulletinReleaseBeginDT;
 private QueryField _bulletinReleaseEndDT;
 private QueryField _bulletinExpireBeginDT;
 private QueryField _bulletinExpireEndDT;
 private QueryField _bulletinTargetTo;

 private Table table = null;
 private TextBox bulletinTitle = null;
 private TextBox bulletinContent = null;
 private DateTimeControl bulletinReleaseDTBegin = null;
 private DateTimeControl bulletinExpireDTBegin = null;
 private Button btnQuery = null;
 private DateTimeControl bulletinReleaseDTEnd = null;
 private DateTimeControl bulletinExpireDTEnd = null;

 private ICamlProvider _CamlProvider;
 private string _LayoutControlPath = "";
 /// <summary>
 /// 过滤条件表达式
 /// </summary>
 private CamlExpression _camlExpression;

 private ViewToolBar _toolbar = null;
 private ListViewWebPart _lvwp = null;
 private SPView _spview = null;

 /// <summary>
 /// 当前用户所在的SharePoint用户组
 /// </summary>
 private List<string> currUserGroups = null;
 /// <summary>
 /// 当前用户是否公告管理员
 /// </summary>
 private bool IsBulletinAdmin = false;

 public VirusSmartQueryWebPart()
 {
 _spview = SPContext.Current.List.DefaultView;
 addCurrentUserGroup();
 isBulletinAdmin();

 }
 /// <summary>
 /// 将当前用户所在的用户组添加到currUserGroup集合
 /// </summary>
 private void addCurrentUserGroup()
 {
 currUserGroups = new List<string>();
 currUserGroups.Clear();
 SPGroupCollection groups = SPContext.Current.Web.CurrentUser.Groups;
 foreach (SPGroup g in groups)
 {
 currUserGroups.Add(g.Name);
 }

 }
 /// <summary>
 /// 判断当前用户是否公告管理员
 /// </summary>
 /// <returns></returns>
 private void isBulletinAdmin()
 {
 if (currUserGroups.Count > 0)
 {
 foreach (string s in currUserGroups)
 {
 if (s.Equals("公告管理员"))
 {
 IsBulletinAdmin = true;
 break;
 }
 }
 }

 }
 private void ChangeSchemaXmlQuery(XmlDocument doc, string query)
 {
 if (!string.IsNullOrEmpty(query))
 {
 string innerQuery = this.GetInnerQuery(query);
 if (innerQuery != "")
 {
 XmlNode node = doc.DocumentElement.SelectSingleNode("Query");
 XmlNode oldChild = node.SelectSingleNode("Where");
 if (oldChild != null)
 {
 node.RemoveChild(oldChild);
 }
 XmlNode newChild = doc.CreateElement("Where");
 newChild.InnerXml = innerQuery;
 node.AppendChild(newChild);
 doc.DocumentElement.SelectSingleNode("ViewEmpty").InnerXml = "<HTML><![CDATA[AA Say:未找到符合查询条件的记录]]></HTML>";
 }
 }
 }
 protected override void CreateChildControls()
 {
 base.CreateChildControls();
 _bulletinTargetTo = new QueryField(SPContext.Current.List.Fields["目标访问群体"].InternalName);
 if (!IsBulletinAdmin)
 {
 _camlExpression = _bulletinTargetTo.Contains(SPContext.Current.Web.CurrentUser.Groups[0].Name);
 }
 if (_camlExpression != null)
 {
 this.SetCurrentListViewSchemaQuery(CamlBuilder.Where(_camlExpression));
 }

 if (table != null)
 {
 this.Controls.Add(table);
 }
 else
 {
 createTable();
 this.Controls.Add(table);
 }
 }
 private string GetInnerQuery(string q)
 {
 XmlDocument document = new XmlDocument();
 document.LoadXml(q);
 return document.DocumentElement.InnerXml;
 }

 protected override void OnInit(EventArgs e)
 {
 base.OnInit(e);
 this.EnableViewState = true;
 this.EnsureChildControls();
 }
 /// <summary>
 /// 创建查询界面布局
 /// </summary>
 private void createTable()
 {
 table = new Table();
 TableRow tr1 = new TableRow();

 TableCell cell11 = new TableCell();
 cell11.Text = "公告标题";
 tr1.Cells.Add(cell11);

 TableCell cell12 = new TableCell();
 bulletinTitle = new TextBox();
 bulletinTitle.ID = "bulletinTitle";
 bulletinTitle.Text = "";
 cell12.Controls.Add(bulletinTitle);
 tr1.Cells.Add(cell12);

 TableCell cell13 = new TableCell();
 cell13.Text = "公告发布时间";
 tr1.Cells.Add(cell13);

 TableCell cell14 = new TableCell();
 bulletinReleaseDTBegin = new DateTimeControl();
 bulletinReleaseDTBegin.ID = "bulletinReleaseDT";
 bulletinReleaseDTBegin.DateOnly = true;
 cell14.Controls.Add(bulletinReleaseDTBegin);
 tr1.Cells.Add(cell14);

 TableCell cell15 = new TableCell();
 cell15.Text = "公告过期时间";
 tr1.Cells.Add(cell15);

 TableCell cell16 = new TableCell();
 bulletinExpireDTBegin = new DateTimeControl();
 bulletinExpireDTBegin.DateOnly = true;
 bulletinExpireDTBegin.ID = "bulletinExpireDTBegin";
 cell16.Controls.Add(bulletinExpireDTBegin);
 tr1.Cells.Add(cell16);

 TableCell cell17 = new TableCell();
 btnQuery = new Button();

 btnQuery.ID = "btnQuery";
 btnQuery.Text = "查询";
 btnQuery.Click += new EventHandler(btnQuery_Click);
 cell17.Controls.Add(btnQuery);
 tr1.Cells.Add(cell17);

 table.Rows.Add(tr1);

 TableRow tr2 = new TableRow();

 TableCell cell21 = new TableCell();
 cell21.Text = "公告内容";
 tr2.Cells.Add(cell21);

 TableCell cell22 = new TableCell();
 bulletinContent = new TextBox();
 bulletinContent.ID = "bulletinContent";
 bulletinContent.Text = "";
 cell22.Controls.Add(bulletinContent);
 tr2.Cells.Add(cell22);

 TableCell cell23 = new TableCell();
 cell23.Text = "到";
 tr2.Cells.Add(cell23);

 TableCell cell24 = new TableCell();
 bulletinReleaseDTEnd = new DateTimeControl();
 bulletinReleaseDTEnd.ID = "bulletinReleaseDTEnd";
 bulletinReleaseDTEnd.DateOnly = true;
 cell24.Controls.Add(bulletinReleaseDTEnd);
 tr2.Cells.Add(cell24);

 TableCell cell25 = new TableCell();
 cell25.Text = "到";
 tr2.Cells.Add(cell25);

 TableCell cell26 = new TableCell();
 bulletinExpireDTEnd = new DateTimeControl();
 bulletinExpireDTEnd.DateOnly = true;
 bulletinExpireDTEnd.ID = "bulletinExpireDTEnd";
 cell26.Controls.Add(bulletinExpireDTEnd);
 tr2.Cells.Add(cell26);

 TableCell cell27 = new TableCell();
 cell27.Text = "";
 tr2.Cells.Add(cell27);

 table.Rows.Add(tr2);

 }
 /// <summary>
 /// 单击查询按钮
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 void btnQuery_Click(object sender, EventArgs e)
 {
 _bulletinTitle = new QueryField("Title");
 _bulletinContent = new QueryField(List.Fields["公告内容"].InternalName);
 _bulletinReleaseBeginDT = new QueryField(List.Fields["公告发布时间"].InternalName);
 _bulletinReleaseEndDT = new QueryField(List.Fields["公告发布时间"].InternalName);
 _bulletinExpireBeginDT = new QueryField(List.Fields["公告过期时间"].InternalName);
 _bulletinExpireEndDT = new QueryField(List.Fields["公告过期时间"].InternalName);

 //throw new NotImplementedException();
 if (!string.IsNullOrEmpty(bulletinTitle.Text))
 {
 if (_camlExpression == null)
 {
 _camlExpression = _bulletinTitle.Contains(bulletinTitle.Text.Trim());
 }
 else
 {
 _camlExpression = _camlExpression && _bulletinTitle.Contains(bulletinTitle.Text.Trim());
 }
 }
 if (!string.IsNullOrEmpty(bulletinContent.Text))
 {
 if (_camlExpression == null)
 {
 _camlExpression = _bulletinContent.Contains(bulletinContent.Text.Trim());
 }
 else
 {
 _camlExpression = _camlExpression && _bulletinContent.Contains(bulletinContent.Text.Trim());
 }
 }
 if (!bulletinReleaseDTBegin.IsDateEmpty && !bulletinReleaseDTEnd.IsDateEmpty)
 {
 if (_camlExpression == null)
 {
 _camlExpression = _bulletinReleaseBeginDT.MoreEqual(bulletinReleaseDTBegin.SelectedDate) && _bulletinReleaseEndDT.LessEqual(bulletinReleaseDTEnd.SelectedDate);

 }
 else
 {
 _camlExpression = _camlExpression && _bulletinReleaseBeginDT.MoreEqual(bulletinReleaseDTBegin.SelectedDate) && _bulletinReleaseEndDT.LessEqual(bulletinReleaseDTEnd.SelectedDate);

 }
 }
 if (!bulletinExpireDTBegin.IsDateEmpty && !bulletinExpireDTEnd.IsDateEmpty)
 {
 if (_camlExpression == null)
 {
 _camlExpression = _bulletinExpireBeginDT.MoreEqual(bulletinExpireDTBegin.SelectedDate) && _bulletinExpireEndDT.LessEqual(bulletinExpireDTEnd.SelectedDate);

 }
 else
 {
 _camlExpression = _camlExpression && _bulletinExpireBeginDT.MoreEqual(bulletinExpireDTBegin.SelectedDate) && _bulletinExpireEndDT.LessEqual(bulletinExpireDTEnd.SelectedDate);

 }
 }
 if (QueryExpression != null)
 {
 this.SetCurrentListViewSchemaQuery(CamlBuilder.Where(QueryExpression));
 }
 }
 protected override void OnLoad(EventArgs e)
 {
 base.OnLoad(e);

 }
 /// <summary>
 /// 添加ViewToolBar
 /// </summary>
 private void addViewToolbar()
 {
 _toolbar = new ViewToolBar();
 SPContext context = SPContext.GetContext(this.Context, _spview.ID, SPContext.Current.List.ID, SPContext.Current.Web);
 _toolbar.RenderContext = context;
 Controls.Add(_toolbar);
 }
 /// <summary>
 /// 添加ListViewWebPart
 /// </summary>
 private void addListViewWebPart()
 {
 _lvwp = new ListViewWebPart();
 _lvwp.ListName = SPContext.Current.List.ID.ToString("B").ToUpper();
 _lvwp.ViewGuid = _spview.ID.ToString("B").ToUpper();
 _lvwp.ViewType = ViewType.Html;
 Controls.Add(_lvwp);
 }
 private void SetCurrentListViewSchemaQuery(string qxml)
 {
 if (!string.IsNullOrEmpty(qxml))
 {
 string strB = "{" + this.List.ID.ToString() + "}";
 foreach (System.Web.UI.WebControls.WebParts.WebPart part in base.Zone.WebParts)
 {
 if (part is ListViewWebPart)
 {
 ListViewWebPart part2 = (ListViewWebPart)part;
 if (string.Compare(part2.ListName, strB, true) != 0)
 {
 continue;
 }
 if (string.IsNullOrEmpty(qxml))
 {
 part2.ListViewXml = this.List.Views[new Guid(part2.ViewGuid)].HtmlSchemaXml;
 }
 else
 {
 XmlDocument doc = new XmlDocument();
 doc.LoadXml(part2.ListViewXml);
 this.ChangeSchemaXmlQuery(doc, qxml);
 part2.ListViewXml = doc.InnerXml;
 }
 return;
 }
 }
 }
 }

 [Personalizable(PersonalizationScope.Shared), WebBrowsable]
 public string LayoutControlPath
 {
 get
 {
 return this._LayoutControlPath;
 }
 set
 {
 this._LayoutControlPath = value;
 }
 }

 private SPList List
 {
 get
 {
 return SPContext.Current.List;
 }
 }

 public CamlExpression QueryExpression
 {
 get
 {
 this.EnsureChildControls();
 if (this._camlExpression != null)
 {
 return this._camlExpression;
 }
 return null;
 }
 }
 }
}

我相信上帝的存在(I'm Gil)

公告