求asp.net(c#)将execl文件数据导入sql se...-excel导入.net文件,怎么把excel表格导入

1.本文实现在c#中可高效的将excel数据导入到sqlserver数据库中,很多人通过循环来拼接sql，这样做不但容易出错而且效率低下，最好的办法是使用bcp，也就是System.Data.SqlClient.SqlBulkCopy 类来实现。不但速度快，而且代码简单，下面测试代码导入一个6万多条数据的sheet，包括读取（全部读取比较慢）在我的开发环境中只需要10秒左右，而真正的导入过程只需要4.5秒。
2.代码如下：
using System;
using System.Data;
using System.Windows.Forms;
using System.Data.OleDb;
namespace WindowsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
//测试，将excel中的sheet1导入到sqlserver中
string connString = "server=localhost;uid=sa;pwd=sqlgis;database=master";
System.Windows.Forms.OpenFileDialog fd = new OpenFileDialog();
if (fd.ShowDialog() == DialogResult.OK)
{
TransferData(fd.FileName, "sheet1", connString);
}
}

public void TransferData(string excelFile, string sheetName, string connectionString)
{
DataSet ds = new DataSet();
try
{
//获取全部数据
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelFile + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
strExcel = string.Format("select * from [{0}$]", sheetName);
myCommand = new OleDbDataAdapter(strExcel, strConn);
myCommand.Fill(ds, sheetName);

//如果目标表不存在则创建
string strSql = string.Format("if object_id('{0}') is null create table {0}(", sheetName);
foreach (System.Data.DataColumn c in ds.Tables[0].Columns)
{
strSql += string.Format("[{0}] varchar(255),", c.ColumnName);
}
strSql = strSql.Trim(',') + ")";

using (System.Data.SqlClient.SqlConnection sqlconn = new System.Data.SqlClient.SqlConnection(connectionString))
{
sqlconn.Open();
System.Data.SqlClient.SqlCommand command = sqlconn.CreateCommand();
command.CommandText = strSql;
command.ExecuteNonQuery();
sqlconn.Close();
}
//用bcp导入数据
using (System.Data.SqlClient.SqlBulkCopy bcp = new System.Data.SqlClient.SqlBulkCopy(connectionString))
{
bcp.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);
bcp.BatchSize = 100;//每次传输的行数
bcp.NotifyAfter = 100;//进度提示的行数
bcp.DestinationTableName = sheetName;//目标表
bcp.WriteToServer(ds.Tables[0]);
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
}
}

//进度显示
void bcp_SqlRowsCopied(object sender, System.Data.SqlClient.SqlRowsCopiedEventArgs e)
{
this.Text = e.RowsCopied.ToString();
this.Update();
}
}
}
3.上面的TransferData基本可以e68a84e799bee5baa6e79fa5e98193333直接使用，如果要考虑周全的话，可以用oledb来获取excel的表结构，并且加入ColumnMappings来设置对照字段，这样效果就完全可以做到和sqlserver的dts相同的效果了。

if (excelhelper.DownLoadFile(FilePath, excelhelper.GetExcelDownLoadPath(this) + FileName, out error))
{
Business.Module.CM.BLL.tblcmbase_Server_Temp tblcmbase_Server = new Business.Module.CM.BLL.tblcmbase_Server_Temp();

if (tblcmbase_Server.ImportExcelData("信息表", excelhelper.GetExcelDownLoadPath(this) + FileName,fileupload1.DocIDValue , out error))
{
Utinity.ClientScriptHelper.WriteAlertSaveSuccess(this);

}
else
{
Utinity.ClientScriptHelper.WriteAlert(this, "导入信息出错！错误信息：e799bee5baa6e79fa5e98193e4b893e5b19e338" + error);
}
}
public bool ImportExcelData(string TableName, string Path, string FileAttID, out string error)
{
error = "";

try
{
Utinity.ExcelRWHelper _excel = new Utinity.ExcelRWHelper();

Microsoft.Office.Interop.Excel.ApplicationClass app = new Microsoft.Office.Interop.Excel.ApplicationClass();
app.Visible = false;

Microsoft.Office.Interop.Excel.WorkbookClass workbook = (Microsoft.Office.Interop.Excel.WorkbookClass)app.Workbooks.Open(Path, //Environment.CurrentDirectory+
Missing.Value, true, Missing.Value,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);

object missing = Type.Missing;
Microsoft.Office.Interop.Excel.Sheets sheets = workbook.Worksheets;
Microsoft.Office.Interop.Excel.Worksheet datasheet = null;
bool isExcel = true;//判断导入文件是否正确
foreach (Microsoft.Office.Interop.Excel.Worksheet sheet in sheets) //取出指定的sheet
{
if (sheet.Name == TableName)
{
datasheet = sheet;
isExcel = false;
break;
}
}
if (isExcel)
{
error = "导入Excel文件有误,请重新导入!";
return false;
}

app.Quit();
app = null;

System.Data.DataTable tbServer = _excel.ReadExcelData(Path, TableName);

for (int i = 0; i < tbServer.Rows.Count; i++)
{
if (tbServer.Rows[i][2].ToString() != "" && !tbServer.Rows[i][2].ToString().Equals("{}"))
{
decimal tempdecimal = decimal.Parse("0.00");

if (tbServer.Rows[i][6] == DBNull.Value || tbServer.Rows[i][6].ToString() == "")
{
error = "第" + (i + 2).ToString() + "行设备序列号不能为空！请检查excel文件数据格式！";
return false;
}

if (tbServer.Rows[i][7] == DBNull.Value || tbServer.Rows[i][7].ToString() == "")
{
error = "第" + (i + 2).ToString() + "行主机名(hostname)不能为空！请检查excel文件数据格式！";
return false;
}

}
}

DAL.tblcmbase_Server_Temp tblcmbase_Server = new DAL.tblcmbase_Server_Temp();

//导入临时表

tblcmbase_Server.InsertTempData(tbServer);

//数据对比
tblcmbase_Server.CompTempData(Framework.Assistant.Utility.GetGUID(), FileAttID, Utinity.User.CurrentUserName());

return true;
}
catch (Exception ex)
{
error = ex.ToString();
return false;
}
}

public string GetExcelDownLoadPath(System.Web.UI.Page page)
{
return ConfigurationManager.AppSettings["ExcelDownLoadPath"] == null ? page.Request.PhysicalApplicationPath : ConfigurationManager.AppSettings["ExcelDownLoadPath"];
}

public bool DownLoadFile(string SourceFilePath, string TargetFilePath, out string error)
{
error = "";

WebClient client = new WebClient();
client.Credentials = CredentialCache.DefaultCredentials;

try
{
client.DownloadFile(SourceFilePath, TargetFilePath);

return true;
}
catch (Exception ex)
{
error = ex.ToString();

return false;
}
}
比较简单，这个百要用到微软度的分布式查询，可以参考我之前写的：知 《Excel导入SQL SERVER》 http://hi.baidu.com/44498/blog/item/404e364307380c1a72f05d3d.html 但是道你要注意，先上传到服务专器之后才能执属行导入操作。

Excel.Application app = new Excel.Application();
app.Visible = true;
try
{
object obj = System.Reflection.Missing.Value;
Excel.Workbooks wb = app.Workbooks;
Excel._Workbook iwk = wb.Add(obj);
Excel._Worksheet sheet = (Excel._Worksheet)(iwk.ActiveSheet);

app.Caption = "Excle的标题";

//添加列
for (int i = 0; i < this.dataGridView的控件名.Columns.Count; i++)
{
sheet.Cells[1, i + 1] = this.dataGridView的控件名.Columns[i].HeaderText;
}

//添加行
for (int i = 0; i < this.dataGridView的控件名.Rows.Count; i++)
{
for (int j = 0; j < dataGridView的控件名.Columns.Count; j++)
{
sheet.Cells[i + 2, j + 1] = this.dataGridView的控件名.Rows[i].Cells[j].Value.ToString();
}
}
}
catch (Exception ex)
{
throw ex;
}
}
用法：先把Excle.dll 复制在你的项目7a64e59b9ee7ad94337的bin\Debug文件下：在右击工具箱->选择项(I)... -> 显示"选择工具箱项" -> COM组件 -> 选择Excle就可以了