Default.aspx
复制代码 代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>无标题页</title>
<style type="text/css">
.style1
{
height: 16px;
}
.style3
{
height: 23px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<table align="center" border="1" bordercolor="honeydew" cellpadding="0"
cellspacing="0">
<tr>
<td style="FONT-SIZE: 9pt; COLOR: #ff0000; BACKGROUND-COLOR: #ff9933; TEXT-ALIGN: center"
class="style1">
</td>
<td colspan="2"
style="FONT-SIZE: 9pt; COLOR: #ffffff; HEIGHT: 16px; BACKGROUND-COLOR: #ff9933; TEXT-ALIGN: center">
将Excel数据写入Access数据库中</td>
</tr>
<tr>
<td style="BACKGROUND-COLOR: #ffffcc; TEXT-ALIGN: center">
</td>
<td style="BACKGROUND-COLOR: #ffffcc; TEXT-ALIGN: center">
<iframe id="I1" name="I1" scrolling="yes" src="/UploadFiles/2021-04-02/学生成绩.xls"> style="WIDTH: 407px; HEIGHT: 280px"></iframe>
</td>
<td style="WIDTH: 190px; BACKGROUND-COLOR: #ffffcc; TEXT-ALIGN: center">
<asp:GridView ID="GridView1" runat="server" CellPadding="4" Font-Size="9pt"
ForeColor="#333333" GridLines="None" Width="228px">
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
<PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</td>
</tr>
<tr>
<td style="BACKGROUND-COLOR: #ff9900; TEXT-ALIGN: center" class="style3">
</td>
<td style="HEIGHT: 23px; BACKGROUND-COLOR: #ff9900; TEXT-ALIGN: center"
valign="top">
<asp:Button ID="Button3" runat="server" Font-Size="9pt" onclick="Button1_Click"
Text="Excel数据写入Access数据库中" />
<asp:Label ID="Label1" runat="server" Text="Label" Visible="False"
style="font-size: x-small"></asp:Label>
</td>
<td style="WIDTH: 190px; HEIGHT: 23px; BACKGROUND-COLOR: #ff9900; TEXT-ALIGN: center">
<asp:Button ID="Button2" runat="server" Font-Size="9pt" onclick="Button2_Click"
Text="数据库中显示Excel数据" />
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</form>
</body>
</html>
Default.aspx.cs
复制代码 代码如下:
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("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$]";
OleDbDataAdapter da = new OleDbDataAdapter(sql, strcon);
DataSet ds = new DataSet();
da.Fill(ds);
return ds.Tables[0];
}
public void LoadData(string StyleSheet)
{
//定义数据库连接字符串 m
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source =" + Server.MapPath("学生成绩.xls") + ";Extended Properties=Excel 8.0";
//创建数据库连接
OleDbConnection myConn = new OleDbConnection(strCon);
//打开数据链接，得到一个数据集
myConn.Open();
//创建DataSet对象
DataSet myDataSet = new DataSet();
//定义查询的SQL语句
string StrSql = "select * from [" + StyleSheet + "$]";
//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();
}
}
Excel,Access
P70系列延期，华为新旗舰将在下月发布
3月20日消息，近期博主@数码闲聊站 透露，原定三月份发布的华为新旗舰P70系列延期发布，预计4月份上市。
而博主@定焦数码 爆料，华为的P70系列在定位上已经超过了Mate60，成为了重要的旗舰系列之一。它肩负着重返影像领域顶尖的使命。那么这次P70会带来哪些令人惊艳的创新呢？
根据目前爆料的消息来看，华为P70系列将推出三个版本，其中P70和P70 Pro采用了三角形的摄像头模组设计，而P70 Art则采用了与上一代P60 Art相似的不规则形状设计。这样的外观是否好看见仁见智，但辨识度绝对拉满。