将Excel内容导入数据库(ASP.NET/C#)

思路：先上传XLS文件，然后用OleDB连接Excel文件，将Excel数据导入Dataset，再将Dataset数据导入数据库。
以下是主调入过程


string filename = string.Empty;


try






{


filename = UpdateXls(this.FileExcel);//上传XLS文件


ImportXlsToData(filename);//将XLS文件内容导入


//删除文件


if (filename != string.Empty && File.Exists(filename))






{


File.Delete(filename);//删除上传的文件


}


}


catch(Exception ex)






{


this.WriteErrorXML(ex);//出错处理


this.lblMessage.Text = ex.Message;//错误显示


}


finally






{


//重新加载页面


LoadData();


}
以下是各个主要的函数。
其中ImportXlsToData是使用OleDb链接Excel文件并将其数据导入Dataset中；
UpdateXls是上传Xls文件（其实应该写成UpLoadXls......-_-!）;
AddDatasetToSQL是将Dataset导入数据库，其中Save函数是插入一行记录（这里没有给出该函数）。






/**//// <summary>


/// 从Excel提取数据--》Dataset


/// </summary>


/// <param name="filename">Excel文件路径名</param>


private void ImportXlsToData(string fileName)






{


try






{


if (fileName == string.Empty)






{


throw new ArgumentNullException("上传文件失败！");


}


//


string oleDBConnString = String.Empty;


oleDBConnString = "Provider=Microsoft.Jet.OLEDB.4.0;";


oleDBConnString += "Data Source=";


oleDBConnString += fileName;


oleDBConnString += ";Extended Properties=Excel 8.0;";


//


OleDbConnection oleDBConn = null;


OleDbDataAdapter oleAdMaster = null;


DataTable m_tableName=new DataTable();


DataSet ds=new DataSet();




oleDBConn = new OleDbConnection(oleDBConnString);


oleDBConn.Open();


m_tableName=oleDBConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,null);




if (m_tableName != null && m_tableName.Rows.Count > 0)






{




m_tableName.TableName =m_tableName.Rows[0]["TABLE_NAME"].ToString();




}


string sqlMaster;


sqlMaster=" SELECT * FROM ["+m_tableName.TableName+"]";


oleAdMaster=new OleDbDataAdapter(sqlMaster,oleDBConn);


oleAdMaster.Fill(ds,"m_tableName");


oleAdMaster.Dispose();


oleDBConn.Close();


oleDBConn.Dispose();




//测试是否提取数据


//this.Datagrid1.DataSource = ds.Tables["m_tableName"];


//this.Datagrid1.DataBind();


//将Dataset中数据导入SQL


AddDatasetToSQL(ds);




}


catch(Exception ex)






{


throw ex;


}


}




//上传Excel文件


private string UpdateXls(System.Web.UI.HtmlControls.HtmlInputFile inputfile)






{


string orifilename = string.Empty;


string uploadfilepath = string.Empty;


string modifyfilename = string.Empty;


string fileExtend = "" ;//文件扩展名


int fileSize = 0;//文件大小


try






{


if(inputfile.Value != string.Empty)






{


//得到文件的大小


fileSize = inputfile.PostedFile.ContentLength;


if(fileSize == 0 )






{


throw new Exception("找不到该文件！");


}


//得到扩展名


fileExtend = inputfile.Value.Substring(inputfile.Value.LastIndexOf(".")+1);


if(fileExtend.ToLower() != "xls")






{


throw new Exception("请确认您所导入的文件是否EXCEL文件！！");


}


//路径


uploadfilepath = System.Web.HttpContext.Current.Server.MapPath(".")+path;


//新文件名


modifyfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString()


+ DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString()


+ DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString()


+ DateTime.Now.Millisecond.ToString();


modifyfilename += "."+inputfile.Value.Substring(inputfile.Value.LastIndexOf(".")+1);


//判断是否有该目录


System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(uploadfilepath);


if (!dir.Exists)






{


dir.Create();


}


orifilename = uploadfilepath+modifyfilename;


//如果存在,删除文件


if(File.Exists(orifilename))






{


File.Delete(orifilename);


}


// 上传文件


inputfile.PostedFile.SaveAs(orifilename);


}


else






{


throw new Exception("没有选择Excel文件!");


}


}


catch(Exception ex)






{


throw ex;


}


return orifilename;


}




//将Dataset的内容导入SQL


private bool AddDatasetToSQL(DataSet pds)






{


int ic,ir;


ic = pds.Tables[0].Columns.Count;


if (pds.Tables[0].Columns.Count < 7)






{


throw new Exception("导入Excel格式错误！Excel只有" + ic.ToString() + "列");


}


ir = pds.Tables[0].Rows.Count;


if (pds != null && pds.Tables[0].Rows.Count > 0)






{


for (int i = 0;i < pds.Tables[0].Rows.Count;i++)






{


Save(pds.Tables[0].Rows[i][0].ToString(),pds.Tables[0].Rows[i][1].ToString(),


pds.Tables[0].Rows[i][2].ToString(),pds.Tables[0].Rows[i][3].ToString(),


pds.Tables[0].Rows[i][4].ToString(),pds.Tables[0].Rows[i][5].ToString(),


pds.Tables[0].Rows[i][6].ToString());


}


}


else






{


throw new Exception("导入数据为空！");


}


return true;


}

另外一段

/// <summary>
/// 读取Excel文档
/// </summary>
/// <param name="Path">文件名称</param>
/// <returns>返回一个数据集</returns>
public DataSet ExcelToDS(string Path)
{
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source="+ Path +";"+"Extended Properties=Excel 8.0;";
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");
return ds;
}

/// <summary>
/// 写入Excel文档
/// </summary>
/// <param name="Path">文件名称</param>
public bool SaveFP2toExcel(string Path)
{
try
{
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source="+ Path +";"+"Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
System.Data.OleDb.OleDbCommand cmd=new OleDbCommand ();
cmd.Connection =conn;
//cmd.CommandText ="UPDATE [sheet1$] SET 姓名='2005-01-01' WHERE 工号='日期'";
//cmd.ExecuteNonQuery ();
for(int i=0;i<fp2.Sheets [0].RowCount -1;i++)
{
if(fp2.Sheets [0].Cells[i,0].Text!="")
{
cmd.CommandText ="INSERT INTO [sheet1$] (工号,姓名,部门,职务,日期,时间) VALUES('"+fp2.Sheets [0].Cells[i,0].Text+ "','"+
fp2.Sheets [0].Cells[i,1].Text+"','"+fp2.Sheets [0].Cells[i,2].Text+"','"+fp2.Sheets [0].Cells[i,3].Text+
"','"+fp2.Sheets [0].Cells[i,4].Text+"','"+fp2.Sheets [0].Cells[i,5].Text+"')";
cmd.ExecuteNonQuery ();
}
}
conn.Close ();
return true;
}
catch(System.Data.OleDb.OleDbException ex)
{
System.Diagnostics.Debug.WriteLine ("写入Excel发生错误："+ex.Message );
}
return false;
}