using System;using System.Collections.Generic;using System.Web;using System.Web.UI.WebControls;using System.IO;using System.Data;using System.Data.OleDb;using System.Collections;using System.Web.UI;namespace Mujinsoft.CM.Core.Helpers{    public static class ExcelHelper    {        /// <summary>        /// 获取Excel数据表列表        /// </summary>        /// <param name="ExcelFileName"></param>        /// <returns></returns>        public static ArrayList GetExcelTables(string ExcelFileName)        {            //将Excel架构存入数据里            DataTable dt = new DataTable();            ArrayList TablesList = new ArrayList();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    try                    {                        conn.Open();                        dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });                    }                    catch (Exception exp)                    {                        throw exp;                    }                    //获取数据表个数                    int tablecount = dt.Rows.Count;                    for (int i = 0; i < tablecount; i++)                    {                        string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd(‘$‘);                        if (TablesList.IndexOf(tablename) < 0)                        {                            TablesList.Add(tablename);                        }                    }                }            }            return TablesList;        }        /// <summary>        /// 获取指定Excel文件数据表的数据列列表        /// </summary>        /// <param name="ExcelFileName">Excel文件名</param>        /// <param name="TableName">数据表名</param>        /// <returns></returns>        public static ArrayList GetExcelTableColumns(string ExcelFileName, string TableName)        {            //将Excel架构存入数据里            DataTable dt = new DataTable();            ArrayList ColsList = new ArrayList();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    conn.Open();                    dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, TableName, null });                    //获取列个数                    int colcount = dt.Rows.Count;                    for (int i = 0; i < colcount; i++)                    {                        string colname = dt.Rows[i]["Column_Name"].ToString().Trim();                        ColsList.Add(colname);                    }                }            }            return ColsList;        }        /// <summary>        /// 获取指定Excel文件数据表的数据列列表        /// </summary>        /// <param name="ExcelFileName">Excel文件名</param>        /// <param name="TableName">数据表名</param>        /// <returns></returns>        public static DataTable GetExcelTable(string ExcelFileName, string TableName)        {            //将Excel架构存入数据里            DataTable dt = new DataTable();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    conn.Open();                    dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, TableName, null });                }            }            return dt;        }        /// <summary>        /// 将数据导出至Excel        /// </summary>        /// <param name="Table">DataTable对象</param>        /// <param name="ExcelFilePath">Excel文件路径</param>        /// <returns></returns>        public static bool OutputToExcel(DataTable Table, string ExcelFilePath)        {            if (File.Exists(ExcelFilePath))            {                throw new Exception("该文件已经存在！");            }            if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))            {                Table.TableName = "Sheet1";            }            //数据表的列数            int ColCount = Table.Columns.Count;            //用于记数，实例化参数时的序号            int i = 0;            //创建参数            OleDbParameter[] para = new OleDbParameter[ColCount];            //创建表结构的SQL语句            string TableStructStr = @"Create Table " + Table.TableName + "(";            //连接字符串            string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";            OleDbConnection objConn = new OleDbConnection(connString);            //创建表结构            OleDbCommand objCmd = new OleDbCommand();            //数据类型集合            ArrayList DataTypeList = new ArrayList();            DataTypeList.Add("System.Decimal");            DataTypeList.Add("System.Double");            DataTypeList.Add("System.Int16");            DataTypeList.Add("System.Int32");            DataTypeList.Add("System.Int64");            DataTypeList.Add("System.Single");            //遍历数据表的所有列，用于创建表结构            foreach (DataColumn col in Table.Columns)            {                //如果列属于数字列，则设置该列的数据类型为double                if (DataTypeList.IndexOf(col.DataType.ToString()) >= 0)                {                    para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.Double);                    objCmd.Parameters.Add(para[i]);                    //如果是最后一列                    if (i + 1 == ColCount)                    {                        TableStructStr += col.ColumnName + " double)";                    }                    else                    {                        TableStructStr += col.ColumnName + " double,";                    }                }                else                {                    para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.VarChar);                    objCmd.Parameters.Add(para[i]);                    //如果是最后一列                    if (i + 1 == ColCount)                    {                        TableStructStr += col.ColumnName + " varchar)";                    }                    else                    {                        TableStructStr += col.ColumnName + " varchar,";                    }                }                i++;            }            //创建Excel文件及文件结构            try            {                objCmd.Connection = objConn;                objCmd.CommandText = TableStructStr;                if (objConn.State == ConnectionState.Closed)                {                    objConn.Open();                }                objCmd.ExecuteNonQuery();            }            catch (Exception exp)            {                throw exp;            }            //插入记录的SQL语句            string InsertSql_1 = "Insert into " + Table.TableName + " (";            string InsertSql_2 = " Values (";            string InsertSql = "";            //遍历所有列，用于插入记录，在此创建插入记录的SQL语句            for (int colID = 0; colID < ColCount; colID++)            {                if (colID + 1 == ColCount)  //最后一列                {                    InsertSql_1 += Table.Columns[colID].ColumnName + ")";                    InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ")";                }                else                {                    InsertSql_1 += Table.Columns[colID].ColumnName + ",";                    InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ",";                }            }            InsertSql = InsertSql_1 + InsertSql_2;            //遍历数据表的所有数据行            for (int rowID = 0; rowID < Table.Rows.Count; rowID++)            {                for (int colID = 0; colID < ColCount; colID++)                {                    if (para[colID].DbType == DbType.Double && Table.Rows[rowID][colID].ToString().Trim() == "")                    {                        para[colID].Value = 0;                    }                    else                    {                        para[colID].Value = Table.Rows[rowID][colID].ToString().Trim();                    }                }                try                {                    objCmd.CommandText = InsertSql;                    objCmd.ExecuteNonQuery();                }                catch (Exception exp)                {                    string str = exp.Message;                }            }            try            {                if (objConn.State == ConnectionState.Open)                {                    objConn.Close();                }            }            catch (Exception exp)            {                throw exp;            }            return true;        }        /// <summary>        /// 将数据导出至Excel        /// </summary>        /// <param name="Table">DataTable对象</param>        /// <param name="Columns">要导出的数据列集合</param>        /// <param name="ExcelFilePath">Excel文件路径</param>        /// <returns></returns>        public static bool OutputToExcel(DataTable Table, ArrayList Columns, string ExcelFilePath)        {            if (File.Exists(ExcelFilePath))            {                throw new Exception("该文件已经存在！");            }            //如果数据列数大于表的列数，取数据表的所有列            if (Columns.Count > Table.Columns.Count)            {                for (int s = Table.Columns.Count + 1; s <= Columns.Count; s++)                {                    Columns.RemoveAt(s);    //移除数据表列数后的所有列                }            }            //遍历所有的数据列，如果有数据列的数据类型不是 DataColumn，则将它移除            DataColumn column = new DataColumn();            for (int j = 0; j < Columns.Count; j++)            {                try                {                    column = (DataColumn)Columns[j];                }                catch (Exception)                {                    Columns.RemoveAt(j);                }            }            if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))            {                Table.TableName = "Sheet1";            }            //数据表的列数            int ColCount = Columns.Count;            //用于记数，实例化参数时的序号            //int i = 0;            //创建参数            OleDbParameter[] para = new OleDbParameter[ColCount];            //创建表结构的SQL语句            string TableStructStr = @"Create Table " + Table.TableName + "(";            //连接字符串            string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";            OleDbConnection objConn = new OleDbConnection(connString);            //创建表结构            OleDbCommand objCmd = new OleDbCommand();            //数据类型集合            ArrayList DataTypeList = new ArrayList();            DataTypeList.Add("System.Decimal");            DataTypeList.Add("System.Double");            DataTypeList.Add("System.Int16");            DataTypeList.Add("System.Int32");            DataTypeList.Add("System.Int64");            DataTypeList.Add("System.Single");            DataColumn col = new DataColumn();            //遍历数据表的所有列，用于创建表结构            for (int k = 0; k < ColCount; k++)            {                col = (DataColumn)Columns[k];                //列的数据类型是数字型                if (DataTypeList.IndexOf(col.DataType.ToString().Trim()) >= 0)                {                    para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.Double);                    objCmd.Parameters.Add(para[k]);                    //如果是最后一列                    if (k + 1 == ColCount)                    {                        TableStructStr += col.Caption.Trim() + " Double)";                    }                    else                    {                        TableStructStr += col.Caption.Trim() + " Double,";                    }                }                else                {                    para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.VarChar);                    objCmd.Parameters.Add(para[k]);                    //如果是最后一列                    if (k + 1 == ColCount)                    {                        TableStructStr += col.Caption.Trim() + " VarChar)";                    }                    else                    {                        TableStructStr += col.Caption.Trim() + " VarChar,";                    }                }            }            //创建Excel文件及文件结构            try            {                objCmd.Connection = objConn;                objCmd.CommandText = TableStructStr;                if (objConn.State == ConnectionState.Closed)                {                    objConn.Open();                }                objCmd.ExecuteNonQuery();            }            catch (Exception exp)            {                throw exp;            }            //插入记录的SQL语句            string InsertSql_1 = "Insert into " + Table.TableName + " (";            string InsertSql_2 = " Values (";            string InsertSql = "";            //遍历所有列，用于插入记录，在此创建插入记录的SQL语句            for (int colID = 0; colID < ColCount; colID++)            {                if (colID + 1 == ColCount)  //最后一列                {                    InsertSql_1 += Columns[colID].ToString().Trim() + ")";                    InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ")";                }                else                {                    InsertSql_1 += Columns[colID].ToString().Trim() + ",";                    InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ",";                }            }            InsertSql = InsertSql_1 + InsertSql_2;            //遍历数据表的所有数据行            DataColumn DataCol = new DataColumn();            for (int rowID = 0; rowID < Table.Rows.Count; rowID++)            {                for (int colID = 0; colID < ColCount; colID++)                {                    //因为列不连续，所以在取得单元格时不能用行列编号，列需得用列的名称                    DataCol = (DataColumn)Columns[colID];                    if (para[colID].DbType == DbType.Double && Table.Rows[rowID][DataCol.Caption].ToString().Trim() == "")                    {                        para[colID].Value = 0;                    }                    else                    {                        para[colID].Value = Table.Rows[rowID][DataCol.Caption].ToString().Trim();                    }                }                try                {                    objCmd.CommandText = InsertSql;                    objCmd.ExecuteNonQuery();                }                catch (Exception exp)                {                    string str = exp.Message;                }            }            try            {                if (objConn.State == ConnectionState.Open)                {                    objConn.Close();                }            }            catch (Exception exp)            {                throw exp;            }            return true;        }        /// <summary>        /// 导入Excel数据表至DataTable（第一行作为表头）        /// </summary>        /// <param name="ExcelFilePath">Excel文件路径</param>        /// <param name="TableName">数据表名，如果数据表名错误，默认为第一个数据表名</param>        /// <returns></returns>        public static DataTable InputFromExcel(string ExcelFilePath, string TableName)        {            if (!File.Exists(ExcelFilePath))            {                throw new Exception("Excel文件不存在！");            }            //如果数据表名不存在，数据表名为Excel文件的第一个数据表            ArrayList TableList = new ArrayList();            TableList = ExcelHelper.GetExcelTables(ExcelFilePath);            if (TableName.IndexOf(TableName) < 0)            {                TableName = TableList[0].ToString().Trim();            }            DataTable table = new DataTable();            OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0");            OleDbCommand cmd = new OleDbCommand("select * from [" + TableName + "$]", dbcon);            OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);            try            {                if (dbcon.State == ConnectionState.Closed)                {                    dbcon.Open();                }                adapter.Fill(table);            }            catch (Exception exp)            {                throw exp;            }            finally            {                if (dbcon.State == ConnectionState.Open)                {                    dbcon.Close();                }            }            return table;        }        #region  调用前注意事项        //必须将页面的EnableEventValidation属性设为false        //必须履盖页面的VerifyRenderingInServerForm方法        #endregion        #region  GridView导出到Excel静态方法        public static void ToExcelGridView(GridView gdView, string FileName)        {            HttpContext.Current.Response.Clear();            HttpContext.Current.Response.Buffer = true;            HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文            HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。             gdView.EnableViewState = false;            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);            gdView.RenderControl(oHtmlTextWriter);            HttpContext.Current.Response.Write(oStringWriter.ToString());            HttpContext.Current.Response.End();        }        #endregion        #region FormView导出到Excel静态方法        public static void ToExcelFormView(FormView formView)        {            HttpContext.Current.Response.Clear();            HttpContext.Current.Response.Buffer = true;            HttpContext.Current.Response.Charset = "GB2312";            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-7");//设置输出流为简体中文            HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。             formView.EnableViewState = false;            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);            formView.RenderControl(oHtmlTextWriter);            HttpContext.Current.Response.Write(oStringWriter.ToString());            HttpContext.Current.Response.End();        }        #endregion        public static void ToExcelDataSet(DataSet ds, string FileName)        {            GridView gdView = new GridView();            gdView.DataSource = ds.Tables[0].DefaultView;            gdView.DataBind();            ToExcelGridView(gdView, FileName);        }        public static void ToExcelList<T>(List<T> list, string FileName)        {            GridView gdView = new GridView();            gdView.DataSource = DataHelper.ToDataTable<T>(list);            gdView.DataBind();            ToExcelGridView(gdView, FileName);        }        public static void ToExcelDataSet<T>(IList<T> ds, string FileName)        {            GridView gdView = new GridView();            gdView.DataSource = ds;            gdView.DataBind();            ToExcelGridView(gdView, FileName);        }        #region  GridView导出到Excel静态方法        public static void ToExcelRepeater(Repeater gdView, string FileName)        {            HttpContext.Current.Response.Clear();            HttpContext.Current.Response.Buffer = true;            HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文            HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。             gdView.EnableViewState = false;            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);            gdView.RenderControl(oHtmlTextWriter);            HttpContext.Current.Response.Write(oStringWriter.ToString());            HttpContext.Current.Response.End();        }        #endregion                #region 将数据导入Excel        /// <summary>        /// 获取Excel文件数据表列表        /// </summary>        public static ArrayList FromExcel(string ExcelFileName)        {            DataTable dt = new DataTable();            ArrayList TablesList = new ArrayList();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    try                    {                        conn.Open();                        dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });                    }                    catch (Exception exp)                    {                        throw exp;                    }                    //获取数据表个数                    int tablecount = dt.Rows.Count;                    for (int i = 0; i < tablecount; i++)                    {                        string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd(‘$‘);                        if (TablesList.IndexOf(tablename) < 0)                        {                            TablesList.Add(tablename);                        }                    }                }            }            return TablesList;        }        /// <summary>        /// 将Excel文件导出至DataTable(第一行作为表头)        /// </summary>        /// <param name="ExcelFilePath">Excel文件路径</param>        /// <param name="TableName">数据表名，如果数据表名错误，默认为第一个数据表名</param>        public static DataTable FromExcel(string ExcelFilePath, string TableName)        {            if (!File.Exists(ExcelFilePath))            {                throw new Exception("Excel文件不存在！");            }            //如果数据表名不存在，则数据表名为Excel文件的第一个数据表            ArrayList TableList = new ArrayList();            TableList = FromExcel(ExcelFilePath);            if (TableName.IndexOf(TableName) < 0)            {                TableName = TableList[0].ToString().Trim();            }            DataTable table = new DataTable();            OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0");            OleDbCommand cmd = new OleDbCommand("select * from [" + TableName + "$]", dbcon);            OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);            try            {                if (dbcon.State == ConnectionState.Closed)                {                    dbcon.Open();                }                adapter.Fill(table);            }            catch (Exception exp)            {                throw exp;            }            finally            {                if (dbcon.State == ConnectionState.Open)                {                    dbcon.Close();                }            }            return table;        }        #endregion        public static DataTable GetExcelToDataTableBySheet(string FileFullPath, string SheetName)        {            string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + FileFullPath + ";Extended Properties=‘Excel 8.0; HDR=NO; IMEX=1‘"; //此连接只能操作Excel2007之前(.xls)文件            //string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" + "data source=" + FileFullPath + ";Extended Properties=‘Excel 12.0; HDR=NO; IMEX=1‘"; //此连接可以操作.xls与.xlsx文件            OleDbConnection conn = new OleDbConnection(strConn);            conn.Open();            DataSet ds = new DataSet();            OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("SELECT * FROM [{0}$]", SheetName), conn);                    //("select * from [Sheet1$]", conn);            odda.Fill(ds, SheetName);            conn.Close();            return ds.Tables[0];        }        #region 导出Excel文件，自动返回可下载的文件流        /// 导出Excel文件，自动返回可下载的文件流         public static void DataTableExcel(System.Data.DataTable dtData, string FileName)        {            HttpContext.Current.Response.Clear();            GridView dgExport = null;            HttpContext curContext = HttpContext.Current;            StringWriter strWriter = null;            HtmlTextWriter htmlWriter = null;            if (dtData != null)            {                HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);                curContext.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=utf-8>");                curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");                curContext.Response.ContentType = "application nd.ms-excel";                curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;                curContext.Response.Charset = "utf-8";                strWriter = new StringWriter();                htmlWriter = new HtmlTextWriter(strWriter);                dgExport = new GridView();                dgExport.DataSource = dtData.DefaultView;                dgExport.AllowPaging = false;                dgExport.DataBind();                dgExport.RenderControl(htmlWriter);                curContext.Response.Write(strWriter.ToString());                curContext.Response.End();            }        }        #endregion    }}