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#region Copyright(c) 2007 李曦光(Bruce Lee). All Right Reserved.
/******************************************************************************
* Copyright(c) 2007 李曦光(Bruce Lee). All Right Reserved.
*
* 创建时间:2007-12-3
* 作者:Bruce Lee
* Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistribution of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistribution in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AS IS AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#endregion
using System;
using System.Xml;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.Administration;
using Microsoft.SharePoint.WebControls;
using System.Text;
namespace BruceLee.DocumentDiscussion
{
public partial class Discussion : System.Web.UI.Page
{
#region 变量
string ListID = string.Empty;
string SiteURL = string.Empty;
string strUserName = string.Empty;
const string strField = "BruceLeeDiscussion";
int ItemID;
const string strBruceLeeDocumentDiscussion = @"<?xml version=""1.0"" encoding=""utf-8"" standalone=""yes""?><BruceLeeDocumentDiscussion></BruceLeeDocumentDiscussion>";
#endregion
#region 页面加载
protected void Page_Load(object sender, EventArgs e)
{
strUserName = GetUserName();
txtbCreateTiem.Text = DateTime.Now.ToString();
txtbAuthor.Text = strUserName;
SiteURL = Request.Params["SiteURL"];
if (SiteURL.Length > 0)
if (SiteURL.IndexOf('/', 7) == -1)
SiteURL = "/";
else
SiteURL = SiteURL.Substring(SiteURL.LastIndexOf('/'));
ListID = Request.Params["ListID"];
if (ListID.Length == 38 || ListID.Length == 36)
ListID = new Guid(ListID).ToString();
ItemID = System.Convert.ToInt32(Request.Params["ItemID"]);
labList.Text = ListID.ToString();
labItem.Text = ItemID.ToString();
labSiteUrl.Text = SiteURL.ToString();
if (!IsPostBack)
{
SPList spList = GetList(SiteURL, ListID);
SPListItem spListItem = GetListItem(spList, ItemID);
if (!IsHaveField(spList, strField))
{
CreateField(spList, spListItem, strField, ItemID);
}
gvDataBind(spList, strField, ItemID);
}
}
#endregion
#region 得到列表
/// <summary>
/// 得到列表
/// </summary>
/// <param name="SiteURL">站点URL</param>
/// <param name="ListName">列表名称</param>
/// <returns></returns>
protected SPList GetList(string SiteURL, string ListName)
{
SPList spList;
using (SPWeb spWeb = SPContext.Current.Site.OpenWeb(SiteURL))
{
spWeb.Site.AllowUnsafeUpdates = true;
spWeb.AllowUnsafeUpdates = true;
if ((ListName.Trim().Length == 36) && (new Guid(ListName).ToString() == ListName))
{
spList = spWeb.Lists[new Guid(ListName)];
}
else
{
spList = spWeb.Lists[ListName];
}
return spList;
}
}
#endregion
#region 得到列表项
/// <summary>
/// 得到列表项
/// </summary>
/// <param name="spList">列表</param>
/// <param name="strItemId">列表ID</param>
/// <returns></returns>
protected SPListItem GetListItem(SPList spList, int strItemId)
{
SPListItem spListItem = null;
try
{
spListItem = spList.GetItemById(strItemId);
}
catch (Exception ex)
{
throw ex;
}
return spListItem;
}
#endregion
#region 判断列表的某个字段是否存在
/// <summary>
/// 判断列表的某个字段是否存在
/// </summary>
/// <param name="spList">列表</param>
/// <param name="strField">字段名</param>
/// <returns></returns>
protected bool IsHaveField(SPList spList, string strField)
{
bool boolReturn = false;
try
{
boolReturn = spList.Fields.ContainsField(strField);
}
catch (Exception ex)
{
throw ex;
}
return boolReturn;
}
#endregion
#region 创建字段
/// <summary>
/// 创建字段
/// </summary>
/// <param name="spList">列表名称</param>
/// <param name="strField">字段名称</param>
/// <returns></returns>
protected bool CreateField(SPList spList, SPListItem splistItem, string strField, int strItemId)
{
bool boolReturn = false;
try
{
spList.ParentWeb.AllowUnsafeUpdates = true;
spList.Fields.Add (strField,SPFieldType.Note,false);
SPFieldMultiLineText textField = new SPFieldMultiLineText (spList.Fields,strField);
textField.UnlimitedLengthInDocumentLibrary = true;
textField.DefaultValue = strBruceLeeDocumentDiscussion;
textField.Hidden = true;
textField.ReadOnlyField = true;
textField.ShowInDisplayForm = false;
textField.ShowInEditForm = false;
textField.ShowInListSettings = false;
textField.ShowInNewForm = false;
textField.ShowInVersionHistory = false;
textField.ShowInViewForms = false;
textField.Update();
spList.ForceCheckout = true;
spList.Update();
//UpdateListItemValue(spListItem, strField, strBruceLeeDocumentDiscussion);
boolReturn = true;
}
catch (Exception ex)
{
throw ex;
}
return boolReturn;
}
#endregion
#region 更新列表字段值
protected bool UpdateListItemValue(SPListItem spListItem, string strField, string strFieldValue)
{
bool returnValue = false;
try
{
string strCheckOutStatus = string.Empty;
spListItem.ParentList.ParentWeb.AllowUnsafeUpdates = true;
spListItem[strField] = strFieldValue;
strCheckOutStatus = spListItem.File.CheckOutStatus.ToString ().ToUpper();
if (strCheckOutStatus == "NONE" || strCheckOutStatus == "LONGTERMOFFLINE")
{
spListItem.File.CheckOut();
strCheckOutStatus = "LONGTERM";
spListItem.Update();
}
if (strCheckOutStatus != "NONE")
spListItem.File.CheckIn(strUserName + "添加了评论");
returnValue = true;
}
catch (Exception ex)
{
throw ex;
}
return returnValue;
}
#endregion
#region 评论提交
protected void btnSubmit_Click(object sender, EventArgs e)
{
string txtId,txtAuthor, txtCreateTime, txtContent, strTemp;
string strContent = string.Empty;
string strInsert = string.Empty;
try
{
txtId = Guid.NewGuid().ToString();
strTemp = "</BruceLeeDocumentDiscussion>";
txtAuthor = txtbAuthor.Text.ToString();
txtCreateTime = txtbCreateTiem.Text.ToString();
txtContent = txtbContent.Text.ToString();
SPList spList = GetList(SiteURL, ListID);
SPListItem spListItem = GetListItem(spList, ItemID); ;
spList.ParentWeb.AllowUnsafeUpdates = true;
strContent = spListItem[strField].ToString();
strContent = strContent.Replace(strTemp, "");
strInsert = @"<Discussion Id=""" + txtId + @"""><Author>" + txtAuthor + "</Author><Content>" + txtContent + "</Content><CreateTiem>" + txtCreateTime + "</CreateTiem></Discussion>";
strContent += strInsert + strTemp;
UpdateListItemValue(spListItem, strField, strContent);
gvDataBind(spList, strField, ItemID);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region 数据绑定
/// <summary>
/// 数据绑定
/// </summary>
/// <param name="spList">列表</param>
/// <param name="strField">字段名称</param>
/// <param name="strItemId">列表项ID</param>
protected void gvDataBind(SPList spList, string strField, int strItemId)
{
string strContent = string.Empty;
SPListItem spListItem = null;
try
{
spListItem = GetListItem(spList, strItemId);
if (spListItem[strField] != null)
{
strContent = spListItem[strField].ToString();
}
else
{
strContent = strBruceLeeDocumentDiscussion;
UpdateListItemValue(spListItem, strField, strBruceLeeDocumentDiscussion);
}
XmlDocument xmlContent = new System.Xml.XmlDocument();
xmlContent.LoadXml(strContent);
xmldsDiscussion.Data = xmlContent.InnerXml;
xmldsDiscussion.XPath = "/BruceLeeDocumentDiscussion/Discussion";
gvDiscussion.DataSource = xmldsDiscussion;
gvDiscussion.DataKeyNames = new string[] { "Id" };
gvDiscussion.DataBind();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region 获取用户名
protected string GetUserName()
{
SPWeb spWeb = SPControl.GetContextWeb(Context);
String strUserName = spWeb.CurrentUser.Name;
String strCurrentUser = strUserName.Substring(strUserName.LastIndexOf(@"\") + 1);
return strCurrentUser;
}
#endregion
#region 删除评论
protected void gvDiscussion_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
string strContent = string.Empty;
string strId = string.Empty;
if (strUserName == "系统帐户")
{
SPList spList = GetList(SiteURL, ListID);
SPListItem spListItem = GetListItem(spList, ItemID);
strContent = spListItem[strField].ToString();
XmlDocument xmlContent = new System.Xml.XmlDocument(); ;
xmlContent.LoadXml(strContent);
strId = gvDiscussion.DataKeys[e.RowIndex].Value.ToString();
string strXpathNode = String.Format("/BruceLeeDocumentDiscussion/Discussion[@Id='{0}']", strId);
xmlContent.SelectSingleNode("/BruceLeeDocumentDiscussion").RemoveChild(xmlContent.SelectSingleNode(strXpathNode));
UpdateListItemValue(spListItem, strField, xmlContent.InnerXml.ToString());
Response.Write("<script language='javascript'>alert('记录已被删除'); </script> ");
gvDataBind(spList, strField, ItemID);
}
else
{
Response.Write("<script language='javascript'>alert('你不是管理员,不能删除评论'); </script >");
}
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
}
}