MOSS层级结构Excel导入SPList

等等

using System;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Microsoft.Office.Interop.Excel;
using System.Web;
using System.Data;
using System.Collections;

namespace NuctechProject.Layouts.Settings
{
    public partial class Introducte : LayoutsPageBase
    {
        private static readonly string _rootUrl = HttpContext.Current.Request.Url.Scheme + "://" +
                                                  HttpContext.Current.Request.Url.Host;

        private static readonly string weburl = _rootUrl + "/";
        private readonly string StrUrl = weburl + "newTemplate/"; //公告站点地址
        string excelPath = @"C:\Users\Administrator\Desktop\s\strTemplateFileName.xlsx";
        public static int cengMax = 1;
        public static System.Data.DataTable dt;
        protected void Page_Load(object sender, EventArgs e)
        {
            SPSecurity.RunWithElevatedPrivileges(delegate
            {
                using (var site = new SPSite(StrUrl))
                {
                    using (SPWeb web = site.OpenWeb())
                    {
                        web.AllowUnsafeUpdates = true;
                        dt = GetDataFromExcel(excelPath, true, 1, "dd", 1);
                        GridView1.DataSource = dt;
                        GridView1.DataBind();
                        cengMax = GetCengMax(dt, "级任务");
                        SPList spList = web.Lists["TastTemp"];
                        for (int i = spList.ItemCount - 1; i >= 0; i--)
                        {
                            spList.Items[i].Delete();
                        }
                        AddChildsToSpList(-1, 0, 0.0, spList, web);
                    }
                }
            });
        }
        /// <summary>
        /// Excel导入DataTable
        /// </summary>
        /// <param name="strFileName">文件名称</param>
        /// <param name="isHead">是否包含表头</param>
        /// <param name="iSheet">Sheet</param>
        /// <param name="strErrorMessage">错误信息</param>
        /// <param name="iRowsIndex">导入的Excel的开始行</param>
        /// <returns></returns>
        public static System.Data.DataTable GetDataFromExcel(string strFileName, bool isHead, int iSheet,
           string strErrorMessage, int iRowsIndex)
        {
            if (!strFileName.ToUpper().EndsWith(".XLSX"))
            {
                strErrorMessage = "文件类型与系统设定不一致，请核对！";
                return null;
            }

            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            Microsoft.Office.Interop.Excel.Workbook workbookData;
            Microsoft.Office.Interop.Excel.Worksheet worksheetData;

            workbookData = xlApp.Workbooks.Open(strFileName, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
                     System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value);

            worksheetData = (Microsoft.Office.Interop.Excel.Worksheet)workbookData.Sheets[iSheet];


            Microsoft.Office.Interop.Excel.Range xlRang = null;
            int iRowCount = worksheetData.UsedRange.Cells.Rows.Count;
            int iParstedRow = 0, iCurrSize = 0;
            int iEachSize = 1000;   // each time you 
            int iColumnAccount = worksheetData.UsedRange.Cells.Columns.Count;
            int iHead = iRowsIndex;

            if (isHead)
                iHead = iRowsIndex + 1;

            System.Data.DataTable dt = new System.Data.DataTable();
            for (int i = 1; i <= iColumnAccount; i++)
            {
                if (isHead)
                    dt.Columns.Add(xlApp.Cells[iRowsIndex, i].FormulaLocal);
                else
                    dt.Columns.Add("Columns" + i.ToString());
            }


            object[,] objVal = new object[iEachSize, iColumnAccount];
            try
            {
                iCurrSize = iEachSize;
                while (iParstedRow < iRowCount)
                {
                    if ((iRowCount - iParstedRow) < iEachSize)
                        iCurrSize = iRowCount - iParstedRow;

                    xlRang = worksheetData.get_Range("A" + ((int)(iParstedRow + iHead)).ToString(), ((char)('A' + iColumnAccount - 1)).ToString()
                        + (((int)(iParstedRow + iCurrSize + 1)).ToString()));

                    objVal = (object[,])xlRang.Value2;

                    int iLength = objVal.Length / iColumnAccount;

                    for (int i = 1; i < iLength; i++)
                    {
                        DataRow dr = dt.NewRow();
                        for (int j = 1; j <= iColumnAccount; j++)
                        {
                            if (objVal[i, j] != null)
                            {
                                dr[j - 1] = objVal[i, j].ToString();
                            }

                        }

                        dt.Rows.Add(dr);
                    }

                    iParstedRow = iParstedRow + iCurrSize;

                }
                System.Runtime.InteropServices.Marshal.ReleaseComObject(xlRang);
                xlRang = null;

            }
            catch (Exception ex)
            {
                xlApp.Quit();
                strErrorMessage = ex.Message;
                return null;
            }

            xlApp.Quit();

            return dt;

        }

        /// <summary>
        /// 获取是否有下一级
        /// </summary>
        /// <param name="rowNum">当前行</param>
        /// <param name="columnNum">当前列</param>
        /// <param name="cengMax">最大层级数</param>
        /// <param name="dt">datatable</param>
        /// <returns>YesOrNo</returns>
        public static bool HasFollowSon(int rowNum, int columnNum, int cengMax, System.Data.DataTable dt)
        {
            if (columnNum < cengMax - 1)
            {
                if (rowNum >= dt.Rows.Count - 1)//当最后一行时不去判断下一行，否则出错
                {
                    return false;
                }
                if (dt.Rows[rowNum + 1][columnNum + 1].ToString() != "")
                {
                    return true;

                }
                else
                {
                    return false;
                }
            }
            else
            {
                return false;
            }
            return true;
        }

        /// <summary>
        /// 判断是否有紧跟的同级
        /// </summary>
        /// <param name="rowNum">当前行</param>
        /// <param name="columnNum">当前列</param>
        /// <param name="dt">DataTable</param>
        /// <returns>YesOrNo</returns>
        public static bool HasFollowBrother(int rowNum, int columnNum, System.Data.DataTable dt)
        {
            if (rowNum >= dt.Rows.Count - 1)//当最后一行时不去判断下一行，否则出错
            {
                return false;
            }
            if (dt.Rows[rowNum + 1][columnNum].ToString() == "")
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        /// <summary>
        /// 获取总体层级
        /// </summary>
        /// <param name="dt">DataTable</param>
        /// <param name="keyWords">关键字，如？"级任务"</param>
        /// <returns></returns>
        public static int GetCengMax(System.Data.DataTable dt, string keyWords)
        {
            int columnCount = dt.Columns.Count;
            for (int i = 2; i < columnCount; i++)//最小为两极
            {
                if (!dt.Columns[i].ColumnName.ToString().Contains(keyWords))
                {
                    return i;
                }
            }
            //TODU：如何报错
            return 5;
        }

        /// <summary>
        /// 获取DataTable中子任务的集合
        /// 当行为0时输出根节点
        /// </summary>
        /// <param name="rowNum"></param>
        /// <param name="columnNum"></param>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static DataRowCollection GetChildCollection(int rowNum, int columnNum, System.Data.DataTable dt)
        {
            System.Data.DataTable dtClone = dt.Clone();
            if (rowNum == -1)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    if (dt.Rows[i][0].ToString() != "")
                    {
                        dtClone.ImportRow(dt.Rows[i]);
                    }
                }
            }
            else
            {
                if (HasFollowSon(rowNum, columnNum, cengMax, dt))
                {
                    rowNum++;
                    columnNum++;
                    do
                    {
                        dtClone.ImportRow(dt.Rows[rowNum]);
                        rowNum++;
                        while (HasFarBrother(rowNum - 1, columnNum, dt))
                        {
                            dtClone.ImportRow(GetFarBrother(rowNum - 1, columnNum, dt));
                            rowNum = GetFarBrotherRowIndex(rowNum - 1, columnNum, dt) + 1;
                        }
                    } while (HasFollowBrother(rowNum - 1, columnNum, dt));
                }
            }
            return dtClone.Rows;
        }

        /// <summary>
        /// 获取一行数据中的任务名
        /// 读取方法为读取第一个值
        /// </summary>
        /// <param name="dr"></param>
        /// <returns></returns>
        public static string GetTaskName(DataRow dr)
        {
            for (int i = 0; i < dr.Table.Columns.Count; i++)
            {
                if (dr[i].ToString() != "")
                {
                    return dr[i].ToString();
                }
            }
            return "任务名读取错误";
        }

        public static int GetCeng(DataRow dr)
        {
            for (int i = 0; i < dr.Table.Columns.Count; i++)
            {
                if (dr[i].ToString() != "")
                {
                    return i;
                }
            }
            return 1;//不知如何报错
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="rowNum"></param>
        /// <param name="columnNum"></param>
        /// <param name="taskId">用于PID</param>
        /// <param name="spList"></param>
        /// <param name="spWeb"></param>
        public static void AddChildsToSpList(int rowNum, int columnNum, double taskId, SPList spList, SPWeb spWeb)
        {
            DataRowCollection drC = GetChildCollection(rowNum, columnNum, dt);

            double ID;
            for (int i = 0; i < drC.Count; i++)
            {
                if (rowNum == -1)
                {
                    SPListItem spi = spList.AddItem();
                    spi["TaskName"] = GetTaskName(drC[i]);
                    spi["PID"] = 0;
                    //可以同上一并判断，但鉴于需求中不清楚相同时如何修改。。。。。。
                    if (!SpListHasThisItem(spList, GetTaskName(drC[i]), 0))
                    {
                        spi.Update();
                        ID = spi.ID;
                    }
                    else
                    {
                        ID = GetTaskID(spList, GetTaskName(drC[i]));//做相应的处理
                    }
                    if (HasFollowSon(GetRowNumRoot(dt, GetTaskName(drC[i])), GetColumnNumFC(drC[i]), cengMax, dt))
                    {
                        AddChildsToSpList(GetRowNumRoot(dt, GetTaskName(drC[i])), GetColumnNumFC(drC[i]), ID, spList, spWeb);//获取根目录的行
                    }
                }
                else
                {
                    SPListItem spi = spList.AddItem();
                    spi["TaskName"] = GetTaskName(drC[i]);
                    spi["PID"] = taskId;
                    if (SpListHasThisItem(spList, GetTaskName(drC[i]), taskId))
                    {
                        ID = GetTaskID(spList, GetTaskName(drC[i]));//做相应的处理
                    }
                    else
                    {
                        spi.Update();
                        ID = spi.ID;
                    }
                    if (HasFollowSon(GetRowNumFC(drC[i], dt), GetColumnNumFC(drC[i]), cengMax, dt))
                    {
                        AddChildsToSpList(GetRowNumFC(drC[i], dt), GetColumnNumFC(drC[i]), ID, spList, spWeb);//获取根目录的行
                    }
                }
            }
        }
        
        /// <summary>
        /// 判断某一任务的子任务中是否有某一名称的任务
        /// </summary>
        /// <param name="splist"></param>
        /// <param name="taskName"></param>
        /// <param name="PID">父任务Id</param>
        /// <returns></returns>
        public static bool SpListHasThisItem(SPList splist, string taskName, double PID)
        {
            SPQuery query = new SPQuery();
            query.Query = @"<Where>
                          <Eq>
                             <FieldRef Name='TaskName' />
                             <Value Type='Text'>" + taskName + @"</Value>
                          </Eq>
                       </Where>";
            SPListItemCollection items = splist.GetItems(query);
            foreach (SPListItem item in items)
            {
                if (item["PID"].Equals(PID))
                {
                    return true;
                }
            }
            return false;
        }

        /// <summary>
        /// 获取根目录的行数
        /// </summary>
        /// <param name="dt"></param>
        /// <param name="taskName"></param>
        /// <returns></returns>
        public static int GetRowNumRoot(System.Data.DataTable dt, string taskName)
        {
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                if (dt.Rows[i][0].ToString() == taskName)
                {
                    return i;
                }
            }
            return 1;//如何报错。。。
        }

        /// <summary>
        /// 根据任务名找到Id
        /// </summary>
        /// <param name="splist"></param>
        /// <param name="taskName"></param>
        /// <returns></returns>
        public static int GetTaskID(SPList splist, string taskName)
        {
            for (int i = 0; i < splist.Items.Count; i++)
            {
                if (splist.Items[i]["TaskName"].ToString() == taskName)
                {
                    return splist.Items[i].ID;
                }
            }
            return 2;
        }


        public static int GetColumnNumFC(DataRow dr)
        {
            for (int i = 0; i < dr.Table.Columns.Count; i++)
            {
                if (dr[i].ToString().Length >= 1)
                {
                    return i;
                }
            }
            return 3;
        }

        public static int GetRowNumFC(DataRow dr, System.Data.DataTable dt)
        {
            int columnNum = GetColumnNumFC(dr);
            string taskName = GetTaskName(dr);
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                if (dt.Rows[i][columnNum].ToString() == taskName)
                {
                    return i;
                }
            }
            return 2;
        }

        public static bool HasFarBrother(int rowNum, int columnNum, System.Data.DataTable dt)
        {
            int rowCount = dt.Rows.Count;
            for (int i = rowNum + 2; i < rowCount; i++)//加2是因为暂时要把有相邻弟兄和不相邻弟兄分开
            {
                if (dt.Rows[i][columnNum].ToString() != "")
                {
                    if (dt.Rows[i - 1][columnNum-1].ToString() != "")
                    {
                        return false;
                    }
                    else
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        public static int GetFarBrotherRowIndex(int rowNum, int columnNum, System.Data.DataTable dt)
        {
            int rowCount = dt.Rows.Count;
            for (int i = rowNum + 2; i < rowCount; i++)
            {
                if (dt.Rows[i][columnNum].ToString() != "")
                {
                    if (dt.Rows[i - 1][columnNum].ToString() != "")
                    {
                        return i;
                    }
                    else
                    {
                        return i;
                    }
                }
            }
            return 77;
        }
        public static DataRow GetFarBrother(int rowNum, int columnNum, System.Data.DataTable dt)
        {
            int rowCount = dt.Rows.Count;
            for (int i = rowNum + 2; i < rowCount; i++)
            {
                if (dt.Rows[i][columnNum].ToString() != "")
                {
                    if (dt.Rows[i - 1][columnNum].ToString() != "")
                    {
                        return dt.Rows[i];
                    }
                    else
                    {
                        return dt.Rows[i];
                    }
                }
            }
            //报错
            return dt.Rows[1];
        }
    }
}