excel报表开发-- 根据datatable个数自动生成新sheet
总结一下很久之前做的报表小程序，今日有问题又调试了一下。
DB中存在一个表，记录了ID<自增长>,SqlStatement<sql查询语句>及其他必要字段，比如SheetName,ReferenceTable，InertDate等等
任务是循环表记录，针对SqlStatement语句查询结果，对应dataTable，如有数据则以一个sheet显示出来，如果没有数据则略过。
以下是循环生成sheet的代码：
public static void Create(ref Workbook xBook, ref Application xApp, out string ReportDate)
{
Hashtable hash = new Hashtable();
IT_Check_ReportMgr reportMgr = new IT_Check_ReportMgr();
System.Data.DataTable ItCheckEecel = new System.Data.DataTable();//为了避免不明确引用 Worksheet ws; int idcount;
reportMgr.Get_ITCheckID_Data(out idcount);
DataSet ds = new DataSet();
ds = reportMgr.Get_ITCheck_Data(); string strReportDate = reportMgr.GetFlieGenerateDate();
ReportDate = strReportDate; string key = string.Empty;
for (int i = ; i < ds.Tables.Count;i++ )
{
key = "dt" + i.ToString();
if (ds.Tables[i].Rows.Count==)
continue;//如果DT没有数据，则终止当前，开始新的循环
hash.Add(key, ds.Tables[i]); ws = (Worksheet)xBook.Sheets[xBook.Sheets.Count]; //获取sheet名
if (reportMgr.GetSheetName(i).Length >= )
{
ws.Name = reportMgr.GetSheetName(i).Substring(, );
}
else
{
ws.Name = reportMgr.GetSheetName(i);
} IT_Check_Report_Sheet sheetNew = new IT_Check_Report_Sheet(ref ws);
sheetNew.Generate(hash, ws.Name, i); if ( i+==ds.Tables.Count)
continue;
xBook.Sheets.Add(Type.Missing, xBook.Sheets[xBook.Sheets.Count], Type.Missing, Type.Missing); }
hash.Clear(); ////删除无用的sheet
//xApp.DisplayAlerts = false; //如果想删除某个sheet页，首先要将此项设为fasle，最开始生成excel因工作薄内至少含有一张可视工作表，开始时不可删除
//for (int i = 1; i < xApp.Worksheets.Count; i++)
//{
// if (((Worksheet)xApp.Worksheets[i]).Name.IndexOf("Sheet")> -1)//sheetName中是否包含带有sheet名的工作表
// {
// (xApp.ActiveWorkbook.Sheets[i] as Worksheet).Delete();
// }
//}
//xApp.DisplayAlerts = false; //把Sheet定位到第一个
Worksheet wsh = (Worksheet)xBook.Sheets[];
wsh.Activate(); }
调试监视：
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以下是generate方法，调用的fill方法<带excel-sheet表头>：
public bool Generate(Hashtable hash,string SheetName,int i)
{ System.Data.DataTable dt1 = (System.Data.DataTable)hash["dt"+i.ToString()];
sheet.Name = SheetName;
sheet.Tab.Color = 0xFFFF; if (dt1.Rows.Count == )
{ return false; } Fill(dt1, startRowIndex, startColIndex, true); //设置列标题栏位
IT_Check_TitleStyle(dt1, sheet, dt1.Rows.Count); //增加筛选功能
IT_Check_HeaderFileter(dt1,sheet); return true;
} protected void Fill(System.Data.DataTable dt, int rowStart, int colStart, bool isFormat)
{
int p = ;
for (int beginIndex = ; beginIndex < dt.Rows.Count; beginIndex += p)
{
int endIndex = dt.Rows.Count - ;
if (beginIndex + p < dt.Rows.Count)
{
endIndex = beginIndex + p - ;
} //dt先填充到二维数组中，再添加到range对象效率会高，用时变少
//填充sheet的列名
object[,] arr = new object[endIndex - beginIndex + , dt.Columns.Count]; for (int i = ; i < dt.Columns.Count;i++ )
{
arr[,i]=dt.Columns[i].ColumnName;
} for (int i = beginIndex; i <= endIndex; i++)
{
for (int j = ; j < dt.Columns.Count; j++)
{
arr[i - beginIndex +, j] = dt.Rows[i][j].ToString().Replace("=", "");
}
}
Range range = sheet.get_Range(sheet.Cells[rowStart + beginIndex + , colStart + ], sheet.Cells[rowStart + endIndex + , colStart + dt.Columns.Count]);
range.Rows.NumberFormat = "@";//在填充之前先设置整个range是text类型
if (isFormat)
{ // range.NumberFormat = "#,##0.00"; }
range.Value2 = arr;//二维数组填充到range
range.Borders.LineStyle = XlLineStyle.xlContinuous;
range.Columns.EntireColumn.AutoFit();//设置列宽自动适应 }
}
另：回顾一下Break/Continue的用法：
循环的定义是程序段执行完了以后，再次判断条件，若条件为真，则继续执行该程序段。而在switch结构当中，只是该程序段执行完了之后，就继续执行下面的语句。因此很明显switch结构不是循环。循环有重复、反复执行的功能。
break是跳出整个循环，而continue是结束本次循环！进入下一次循环！
break是不是只针对 for、while、switch 起作用，break的用处可以有两个：
第一：用在switch结构当中的case语句的后面，作用是不再执行后面的case语句，结束switch结构。<选择，退出分支，是条件控制语句，可以用ifelse代替>
第二：用在循环当中，作用是终止该循环的执行，继续执行程序中循环下面的语句。如果有嵌套，只能跳出一层。<结束循环，即跳出与当前该语句最近的循环>如：for循环内if判断语句为真break，则会跳出for循环
例：遍历dr in DataTable，向DB逐条insert语句插入数据，对每dr进行条件筛选，如不符合，则添加errorMsg发送邮件，并结束本次循环，开始下一条dr：
private void POS_3C_Sale_DSG(string strExrName, string strPathFileName, string strFileName, string FileName, string DataRange, string strCountryCode)
{
var dt = ReadExcelToTable(strPathFileName);
//dt.Rows.RemoveAt(0);
SqlConnection con = new SqlConnection(Connstr);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
con.Open();
int num = , num1 = ;
string strHead = "insert into POS3C_Sale(DataRange,SaleDate,C3AcerRegionTemp,C3ProvinceTemp,C3CityTemp,C3Code,DataType,C3BigAreaCode,C3BigAreaName,C3BranchCode,C3BranchName,C3StoreCode,C3StoreName,C3ProductCode,C3AcerProductCode,C3ProductName,C3BiProductName,C3Brand,C3ProductType1,C3ProductType2,C3ProductType2Name,C3CustomerCode,C3CustomerName,C3ChannelType,C3ChannelName,SaleQty,C3BuyType,C3BuyOrganize,C3ShipAddr,C3SellType,C3OtherInfo1,C3OtherInfo2,C3OtherInfo3,C3OtherInfo4,C3OtherInfo5,C3AcerStoreCode,C3AcerStoreName,DataSource,InsertDate) values ",
strError = ""; Dictionary<DataRow, string> ExcelList = new Dictionary<DataRow, string>();
foreach (DataRow dr in dt.Rows)
{
num1++;
try
{
string DataRang = DataRange;
string SaleDate = dr[].ToString();
DateTime date;
string C3AcerRegionTemp=dr[].ToString();
string C3ProvinceTemp=dr[].ToString();
string C3CityTemp = dr[].ToString();
//C3Code-->strCountryCode
string DataType = (DataRange.IndexOf("w")>-?"Weekly":"Monthly");
string C3BigAreaCode = "";
string C3BigAreaName = "";
string C3BranchCode = "";
string C3BranchName = "";
string C3StoreCode = "";//门店代码
string C3StoreName = "";//门店名称
string C3ProductCode = "";
string C3AcerProductCode = dr[].ToString();
string C3ProductName = "";
string C3BiProductName = "";
string C3Brand = "";
string C3ProductType1 = "";
string C3ProductType2 = "";
string C3ProductType2Name = "";
string C3CustomerCode = "";
string C3CustomerName = "";
string C3ChannelType = "";
string C3ChannelName = "";
int SaleQty = dr[].ToString() == "" ? : Convert.ToInt32(dr[]);
string C3BuyType="";
string C3BuyOrganize="";
string C3ShipAddr="";
string C3SellType="";
string C3OtherInfo1="";
string C3OtherInfo2="";
string C3OtherInfo3 = "";
string C3OtherInfo4 = "";
string C3OtherInfo5 = "";
string C3AcerStoreCode = dr[].ToString();
string C3AcerStoreName = dr[].ToString();
string DataSource = strFileName;
//string InserData=DateTime.Now.ToString(); if (SaleDate == "" || C3AcerProductCode == "")//|| C3AcerStoreCode == "" || C3AcerStoreName == ""
{
strError += "数据问题\r\n\n";
num++;
var Collect = SaleDate == "" ? "销售日期 " : "";
Collect += C3AcerProductCode == "" ? "料号信息 " : "";
//Collect += C3AcerStoreCode == "" ? "32门店代码 " : "";
//Collect += C3AcerStoreName == "" ? "32门店名称 " : "";
ExcelList.Add(dr, Collect + "为空");
continue;
}
if (!DateTime.TryParse(SaleDate.ToString(), out date))
{
SaleDate = "1990-1-1";
}
else
{
SaleDate = date.ToString("yyyy-MM-dd");
}
string strTail = "('" + DataRange + "','"+ SaleDate + "','" + C3AcerRegionTemp + "','" + C3ProvinceTemp + "','" + C3CityTemp + "','" + strCountryCode + "','" +
DataType + "','" + C3BigAreaCode + "','" + C3BigAreaName + "','" + C3BranchCode + "','" + C3BranchName + "','" + C3StoreCode + "','" + C3StoreName + "','" + C3ProductCode + "','" + C3AcerProductCode + "','" + C3ProductName + "','" + C3BiProductName + "','"
+ C3Brand + "','" + C3ProductType1 + "','" + C3ProductType2 + "','" + C3ProductType2Name + "','" + C3CustomerCode + "','" + C3CustomerName + "','" + C3ChannelType + "','"
+ C3ChannelName + "'," + SaleQty + ",'" + C3BuyType + "','" + C3BuyOrganize + "','" + C3ShipAddr + "','" + C3SellType + "','" + C3OtherInfo1 + "','" + C3OtherInfo2 + "','" + C3OtherInfo3 + "','" + C3OtherInfo4 + "','" + C3OtherInfo5 + "','"
+ C3AcerStoreCode + "','" + C3AcerStoreName + "','" + DataSource + "',"+ "getdate())";
cmd.CommandText = strHead + strTail;
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
strError += ex.Message + "\r\n\n";
num++;
ExcelList.Add(dr, ex.Message);
} }
con.Close();
Helper.AutomaticExcle(sErrorDirectory + FileName, @"销售日期,专区,省份,城市,销售门店,32门店代码,32门店名称,编码,料号,描述,数量", ExcelList, "POS3C_Sale");
var CurrentTime = DateTime.Now.ToString("yyyy-MM-dd");
Helper.SavaPOS_3CLog("\r\n\n" + strFileName + "\r\n\n" + "成功：" + (num1-num) + "条，失败" + num + "条。", POS3CLog);
Helper.SavaPOS_3CLog(strFileName + "\r\n\n" + strError, SaleLog);
if (num == )
{
var ErrorContents = strFileName + "。excel中一共有" + num1 + "行数据,成功导入数据：" + num1 + "行。";
Mail.SendMail("(" + strCountryCode + ")POS3C Sale信息导入成功" + CurrentTime, "", ErrorContents);
}
else
{
sMoveDirectory = sErrorDirectory;
strError = strFileName + "\t\t错误信息！";
var ErrorContents = strFileName + "。 excel中一共有" + num1 + "行数据, 实际成功导入：" + (num1 - num) + "行。\r\n\n执行失败：" + num + "行。详细信息请看附件";
Mail.SendMail("(" + strCountryCode + ")POS3C Sale错误信息" + CurrentTime, sErrorDirectory + FileName, ErrorContents);
}
//移动到的路径
string SubdirectoryPath = sMoveDirectory + "\\" + DateTime.Now.ToString("yyyy-MM") + "\\";
if (!System.IO.Directory.Exists(SubdirectoryPath))
{
System.IO.Directory.CreateDirectory(SubdirectoryPath);
}
//使用复制为了覆盖文件夹下已有的该文件
File.Move(strPathFileName, SubdirectoryPath + "\\" + strFileName);
}
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