using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.OleDb;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public OleDbConnection CreateCon()
{
string strconn = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + Server.MapPath("UserScore.mdb") + ";User Id=admin;Password=;";
OleDbConnection odbc = new OleDbConnection(strconn);
return odbc;
}
protected void Button1_Click(object sender, EventArgs e)
{
//定义Excel列表
string StyleSheet = "Sheet1";
//调用自定义LoadData方法，将Excel文件中数据读到ASPNET页面中
LoadData(StyleSheet);
//定义查询的SQL语句
string sql = "select ID,用户姓名,试卷,成绩,考试时间 from Score";
//创建Oledb数据库连接
OleDbConnection con = CreateCon();
con.Open();//打开数据库连接
OleDbCommand com = new OleDbCommand(sql, con);
//开始事务
OleDbTransaction tran = con.BeginTransaction();
com.Transaction = tran;
//创建适配器
OleDbDataAdapter da = new OleDbDataAdapter(com);
OleDbCommandBuilder cb = new OleDbCommandBuilder(da);
//创建DataSet数据集
DataSet ds = new DataSet();
//填充数据集
da.Fill(ds);
int curIndex = 0;
if (ds.Tables[0].Rows.Count > 0)
{
curIndex = Convert.ToInt32(ds.Tables[0].Rows[0][0]);
}
//创建一个内存表
DataTable tb = this.getExcelDate();
string selsql = "";
for (int i = 0; i < tb.Rows.Count; i++)
{
string UserName = tb.Rows[i][0].ToString();
selsql = "select count(*) from Score where 用户姓名='" + UserName + "'";
}
//判断Excel文件中是否已经导入到Access数据库中
if (ExScalar(selsql) > 0)
{
Label1.Visible = true;
Label1.Text = "<script language=javascript>alert('该Excle中的数据已经导入数据库中!');location='Default.aspx';</script>";
}
else
{
//循环读取Excel文件中数据，并添加到Access事先创建好的数据库表中
for (int i = 0; i < tb.Rows.Count; i++)
{
DataRow dr = ds.Tables[0].NewRow();
dr[0] = ++curIndex;
dr[1] = tb.Rows[i][0];
dr[2] = tb.Rows[i][1];
dr[3] = tb.Rows[i][2];
dr[4] = tb.Rows[i][3];
ds.Tables[0].Rows.Add(dr);
}
try
{
da.Update(ds);//执行插入操作
tran.Commit();//事务提交
Label1.Visible = true;
Label1.Text = "<script language=javascript>alert('数据导入成功！');location='Default.aspx';</script>";
}
catch
{
tran.Rollback();//事务回滚
Label1.Visible = true;
Label1.Text = "<script language=javascript>alert('数据导入失败！');location='Default.aspx';</script>";
}
finally
{
con.Close();//关闭数据库连接
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{
string sqlstr = "select * from Score";
OleDbConnection conn = CreateCon();
conn.Open();
OleDbCommand mycom = new OleDbCommand(sqlstr, conn);
OleDbDataReader dr = mycom.ExecuteReader();
dr.Read();
if (dr.HasRows)
{
GetDataSet(sqlstr);
}
else
{
Label1.Visible = true;
Label1.Text = "<script language=javascript>alert('数据库中没有数据信息，请先导入再查询！');location='Default.aspx';</script>";
}
dr.Close();
conn.Close();
}
public DataSet GetDataSet(string sqlstr)
{
OleDbConnection conn = CreateCon();
OleDbDataAdapter myda = new OleDbDataAdapter(sqlstr, conn);
DataSet ds = new DataSet();
myda.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
return ds;
}
public DataTable getExcelDate()
{
string strExcelFileName = Server.MapPath("https://www.jb51.net/学生成绩.xls");
string strcon = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strExcelFileName + ";" + "Extended Properties='Excel 8.0;HDR=YES;IMEX=1';";
string sql = "select * from [Sheet1$]";
OleDbDataAdapter da = new OleDbDataAdapter(sql, strcon);
DataSet ds = new DataSet();
da.Fill(ds);
return ds.Tables[0];
}
public void LoadData(string StyleSheet)
{
//定义数据库连接字符串 m
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source =" + Server.MapPath("https://www.jb51.net/学生成绩.xls") + ";Extended Properties=Excel 8.0";
//创建数据库连接
OleDbConnection myConn = new OleDbConnection(strCon);
//打开数据链接，得到一个数据集
myConn.Open();
//创建DataSet对象
DataSet myDataSet = new DataSet();
//定义查询的SQL语句
string StrSql = "select * from [" + StyleSheet + "$]";
//创建数据库适配器
OleDbDataAdapter myCommand = new OleDbDataAdapter(StrSql, myConn);
//填充数据集中的数据
myCommand.Fill(myDataSet, "[" + StyleSheet + "$]");
//释放占有的资源
myCommand.Dispose();
//关闭数据库连接
myConn.Close();
}
public int ExScalar(string sql)
{
OleDbConnection conn = CreateCon();
conn.Open();
OleDbCommand com = new OleDbCommand(sql, conn);
return Convert.ToInt32(com.ExecuteScalar());
conn.Close();
}
}
您可能感兴趣的文章: