Excel数据导入

第一步:转换导入的文件

     #region 转换导入的文件
        private void btnSelectFile_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Title = "Excel文件";
            ofd.FileName = "";
            ofd.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
            ofd.Filter = "Excel文件(*.xls)|*.xls";
            ofd.ValidateNames = true;
            ofd.CheckFileExists = true;
            ofd.CheckPathExists = true;
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                txtFileName.Text = openFileDialog.FileName;
            }

        }
        #endregion

 第二步：执行导入

  #region 执行导入
        private void btnImport_Click(object sender, EventArgs e)
        {
            if (cboSaleStock.SelectedIndex == -1)
            {
                MessageBox.Show("没有选择销售仓库");
                return;
            }
            if (cboShop.SelectedIndex == -1)
            {
                MessageBox.Show("没有选择销售门店");
                return;
            }
            if (string.IsNullOrEmpty(txtFileName.Text) || txtFileName.Text.Length == 0)
            {
                MessageBox.Show("没有选择Excel文件！无法进行数据导入");
                return;
            }
            DataTable dt = ExcelToDataTable(txtFileName.Text);
            string sql = string.Empty;
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                sql += string.Format(@" declare @sno{4} int,@dgrID{4} varchar(20)
                                        set @dgrID{4}=(select top 1 dgoodsresultid from tbdGoodsResult where shopID=\'{0}\' and stockid=\'{1}\' and goodsid=\'{2}\')
                                        if @dgrID{4} is null begin
	                                        set @sno{4}=(select top 1 sno from tbpKeyManager where tablename=\'tbdGoodsResult\')
	                                        if @sno{4} is null begin
		                                        insert into tbpKeyManager(tablename,sno,trdate) values(\'tbdGoodsResult\',1,CONVERT(varchar(12),getdate(),112 ))
		                                        set @sno{4}=1
	                                        end else begin 
		                                        set @sno{4}=@sno{4}+1 
		                                        update tbpKeyManager set sno=sno+1 where tablename=\'tbdGoodsResult\'
	                                        end
	                                        insert into tbdGoodsResult(dgoodsresultid,shopid,stockid,goodsid,pthismonthqty) 
	                                        values(cast(@sno{4} as varchar(11)),\'{0}\',\'{1}\',\'{2}\',\'{3}\')
                                        end else begin
	                                        update tbdGoodsResult set pthismonthqty={3} where dgoodsresultid=@dgrID{4}
                                        end", cboShop.SelectedValue, cboSaleStock.SelectedValue, dt.Rows[i][2], dt.Rows[i][1], i);
            }
            string msg = "";
            if (ws.ExecuteNonQueryWithTrans(sql, ref msg) > 0)
            {
                MessageBox.Show("导入数据成功");
            }
            if (msg.Length > 0)
            {
                MessageBox.Show("导入数据失败:\r\n" + msg);
            }
        }
       #endregion

 第三步：Excel数据导入

  #region Excel数据导入
        private DataTable ExcelToDataTable(string filePath)
        {
            //根据路径打开一个Excel文件并将数据填充到DataSet中
            string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = " + filePath + ";Extended Properties =\'Excel 8.0;HDR=NO;IMEX=1\'";//导入时包含Excel中的第一行数据，并且将数字和字符混合的单元格视为文本进行导入
            OleDbConnection conn = new OleDbConnection(strConn);
            conn.Open();
            string strExcel = "";
            OleDbDataAdapter myCommand = null;
            DataSet ds = null;
            strExcel = "select  * from   [sheet1$]";
            myCommand = new OleDbDataAdapter(strExcel, strConn);
            ds = new DataSet();
            myCommand.Fill(ds, "table1");
            DataTable dt = ds.Tables[0];
            dt.Columns.Add("goodsid");
            string joinSql = "select \'\' pluno";
            foreach (DataRow dr in dt.Rows)
            {
                joinSql += string.Format(" union all select \'{0}\' pluno", dr[0]);
            }
            string sql = string.Format(@"select tbgoods.goodsid,tbgoods.pluno from tbgoods join ({0}) as t on t.pluno=tbgoods.pluno ", joinSql);
            DataTable dtGoods = cf.GetDataSet(sql).Tables[0];
            foreach (DataRow dr in dt.Rows)
            {
                foreach (DataRow dr1 in dtGoods.Rows)
                {
                    if (dr[0].ToString().ToUpper() == dr1["pluno"].ToString())
                    {
                        dr["goodsid"] = dr1["goodsid"].ToString();
                    }
                }
            }
            return ds.Tables[0];
        }
        #endregion