asp.net 实现excel导入到数据库

//Excel批量导入到数据库
protected void btnUpload_Click(object sender, EventArgs e)
{
string IsXls = System.IO.Path.GetExtension(UploadExcel.FileName.ToString().ToLower());
if (IsXls != ".xls")
{
Page.ClientScript.RegisterStartupScript(Page.GetType(), "", "<script type='text/javascript' language='javascript'>alert('只可以选择Excel文件');location.href='EmployeeAddPage.aspx';</script>");
return;//当选择的不是Excel文件时,返回
}
string filePath = UploadExcel.PostedFile.FileName;
string fileName = UploadExcel.FileName;
DataSet ds = ExecleDs (filePath,fileName);

CommonLayer.employeeModel model = new CommonLayer.employeeModel();
DataAcessLayer.employee_infomation addlist = new DataAcessLayer.employee_infomation();

if (ds.Tables[0].Rows.Count > 0)
{

int row = ds.Tables[0].Rows.Count-1;
for (int i = 0; i < ds.Tables[0].Select().Length; i++)
{
string employee_no = ds.Tables[0].Rows[i]["employee_no"].ToString();
string employee_login_name = ds.Tables[0].Rows[i]["employee_login_name"].ToString();
string employee_display_name = ds.Tables[0].Rows[i]["employee_display_name"].ToString();
string employee_account = ds.Tables[0].Rows[i]["employee_account"].ToString();
string employee_mail = ds.Tables[0].Rows[i]["employee_mail"].ToString();
string active_flag = ds.Tables[0].Rows[i]["active_flag"].ToString();
string password = ds.Tables[0].Rows[i]["password"].ToString();
string employee_role = ds.Tables[0].Rows[i]["employee_role"].ToString();

#region 导入数据
// 判断是否存在工号，登陆名，NT，email重复
if (addlist.ExistsInfo(employee_no, employee_login_name, employee_account, employee_mail))
{
AlertAndRedirect("信息填写重复，请重新输入！！！", "EmployeeAddPage.aspx");

}

// 判断表 是否填写完整
else if (employee_account==""||
employee_no == "" ||
employee_mail == "" ||
employee_login_name == "" ||
employee_display_name == "")
{
AlertAndRedirect("请将信息填写完整！！！","EmployeeAddPage.aspx");

}
else
{
// 将Excel中的数据写到数据库中

}
AlertAndRedirect("导入成功！！", "FrmEmployeeList.aspx");
}

else
{
AlertAndRedirect("Excel表为空！", "EmployeeAddPage.aspx");
}
}

public void InsertExcelStaue(string filenameurl, string employeeNo,string statue)
{
string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=2'";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
OleDbCommand cmd = new OleDbCommand(" update [Sheet1$] set statue='" + statue + "' where employee_no='"+employeeNo+"'", conn);

cmd.ExecuteNonQuery();
conn.Close();

}

public DataSet ExecleDs(string filenameurl,string table)
{

string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=2'";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
DataSet ds = new DataSet();
OleDbDataAdapter odda = new OleDbDataAdapter("select * from [Sheet1$]", conn);
odda.Fill(ds, table);
return ds;

}

public void AlertAndRedirect(string str, string redirectUrl)
{
HttpContext.Current.Response.Write("<script language='javascript'>alert('" + str + "');location.href='"+redirectUrl+"';</script>");
}
public void Alert(string str)
{
HttpContext.Current.Response.Write("<script language='javascript'>alert('" + str + "');</script>");
}