Excel导入SQL数据库代码

Excel导入SQL数据库完整代码
protected void studentload_Click(object sender, EventArgs e)
{//批量添加学生信息
SqlConnection conn = DB.dataBaseConn();//链接数据库
conn.Open();
try
{
string fileurl = typename(studentFileUpload);//调用typename方法取得excel文件路径
DataSet ds = new DataSet();//取得数据集
ds = xsldata(fileurl);
int errorcount = 0;//记录错误信息条数
int insertcount = 0;//记录插入成功条数
int updatecount = 0;//记录更新信息条数
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
string stuid = ds.Tables[0].Rows[i][0].ToString();
string stuname = ds.Tables[0].Rows[i][1].ToString();
string stusex = ds.Tables[0].Rows[i][2].ToString();
string zhuanye = ds.Tables[0].Rows[i][3].ToString();
string classname = ds.Tables[0].Rows[i][4].ToString();
if (stuid != "" && stuname != "" && stusex != "" && zhuanye != "" && classname != "")
{
SqlCommand selectcmd = new SqlCommand("select count(*) from zy_class where zhuanye='" + zhuanye + "'and classname='" + classname + "'", conn);
int count = Convert.ToInt32(selectcmd.ExecuteScalar());
if (count > 0)
{
SqlCommand selectcmd2 = new SqlCommand("select count(*) from stud where stuid='" + stuid + "'", conn);
int count2 = Convert.ToInt32(selectcmd2.ExecuteScalar());
if (count2 > 0)
{
SqlCommand updatecmd = new SqlCommand("update stud set stuname='" + stuname + "',stusex='" + stusex + "',zhuanye='" + zhuanyei + "',classname='" + classname + "' where stuid='" + stuid + "'", conn);
updatecmd.ExecuteNonQuery();
updatecount++;
}
else
{
SqlCommand insertcmd= new SqlCommand("insert into stud values('" + stuid + "','" + stuname + "','" + stusex + "','" + zhuanye + "','" + classname+ "')", conn);
insertcmd.ExecuteNonQuery();
insertcount++;
}
}
else
{
Response.Write("<script language='javascript'>alert('专业或班级信息有错！导入失败！请检查！');</script>");
break;

}
}
else
{
errorcount++;
}
}
Response.Write("<script language='javascript'>alert('" + insertcount + "条数据导入成功！" + updatecount + "条数据更新成功！" + errorcount + "条数据部分信息为空没有导入！');</script>");
}
catch (Exception e)
{
Response.Write("<script language='javascript'>alert('导入失败！');</script>");
}
finally
{
conn.Close();
}
}

//把EXCEL文件上传到服务器并返回文件路径

private String typename(FileUpload fileloads)
{
string fullfilename = fileloads.PostedFile.FileName;
string filename = fullfilename.Substring(fullfilename.LastIndexOf("//") + 1);
string type = fullfilename.Substring(fullfilename.LastIndexOf(".") + 1);
string murl = "";
if (type == "xls")
{
fileloads.PostedFile.SaveAs(Server.MapPath("excel") + "//" + filename);
murl = (Server.MapPath("excel") + "//" + filename).ToString();
}
else
{
Response.Write("<script language='javascript'>alert('导入文件格式不对!');</script>");

}
return murl;
}

//

把excel数据读入dataset返回l数据集

private DataSet xsldata(string filepath)
{
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;IMEX=1'";
System.Data.OleDb.OleDbConnection Conn = new System.Data.OleDb.OleDbConnection(strCon);
string strCom = "SELECT * FROM [Sheet1$]";
Conn.Open();
System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, Conn);
DataSet ds = new DataSet();
myCommand.Fill(ds, "[Sheet1$]");
Conn.Close();
return ds;
}