模板页显示Excel数据Gridview增删改查

<%@ Page Title="主页" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
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</p>
<p>
<asp:Button ID="Button1" runat="server" Text="显示Excel数据"
onclick="Button1_Click" />
</p>
<p>
<asp:GridView ID="GridView1" runat="server" Width="100%">
<Columns>
<asp:TemplateField HeaderText="操作">
<ItemTemplate>
<asp:Button ID="Button3" runat="server" Text="删除"
CommandArgument='<%# Eval("编号") %>' onclick="Button3_Click" />
<asp:Button ID="Button4" runat="server" Text="编辑"
CommandArgument='<%# Eval("编号") %>' onclick="Button4_Click" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</p>
<p>
编号:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</p>
<p>
姓名:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</p>
<p>
性别: <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</p>
<p>
<asp:Button ID="Button2" runat="server" Text="新增" onclick="Button2_Click" />
<asp:Button ID="Button5" runat="server" Text="提交" onclick="Button5_Click"
style="height: 21px" />
</p>
<p>
 </p>
<p>
 </p>
<p>
 </p>
<p>
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;

namespace WebApplication1
{
public partial class _Default : System.Web.UI.Page
{

string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=yes'";
protected void Page_Load(object sender, EventArgs e)
{
string fileName = "content/student.xls";
fileName = Server.MapPath(fileName);
connStr = string.Format(connStr,fileName);//连接字符串

}

protected void Button1_Click(object sender, EventArgs e)
{
//读取student.xls文件中的学生数据
BindList();

}

private void BindList()
{
string sql = "select * from [Sheet1$]";
OleDbConnection conn = new OleDbConnection(connStr);
conn.Open();
OleDbCommand cmd = new OleDbCommand(sql, conn);

OleDbDataAdapter da = new OleDbDataAdapter(cmd);

DataTable dt = new DataTable();
da.Fill(dt);
conn.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
}
//新增
protected void Button2_Click(object sender, EventArgs e)
{
string sql = "insert into [Sheet1$] values(@a,@b,@c)";
OleDbConnection conn = new OleDbConnection(connStr);
conn.Open();
OleDbCommand cmd = new OleDbCommand(sql,conn);
OleDbParameter[] pm = new OleDbParameter[3];
pm[0] = new OleDbParameter("@a",TextBox1.Text);
pm[1] = new OleDbParameter("@b",TextBox2.Text);
pm[2] = new OleDbParameter("@c",TextBox3.Text);
foreach (OleDbParameter item in pm)
{
cmd.Parameters.Add(item);
}
int i = cmd.ExecuteNonQuery();
conn.Close();
if (i>0)
{
Response.Write("新增成功");
BindList();
}
else
{
Response.Write("新增失败");
}
}
//删除
protected void Button3_Click(object sender, EventArgs e)
{
Button bt= sender as Button;
string id = bt.CommandArgument;

}
//编辑
protected void Button4_Click(object sender, EventArgs e)
{
string sql = "select * from [Sheet1$] where 编号=@a";
Button bt = sender as Button;
string id = bt.CommandArgument;
OleDbParameter pm = new OleDbParameter("@a", id);
OleDbConnection conn = new OleDbConnection(connStr);
conn.Open();
OleDbCommand cmd = new OleDbCommand(sql,conn);
cmd.Parameters.Add(pm);
OleDbDataReader sdr = cmd.ExecuteReader();
bool b = sdr.Read();
if (b==true)
{
TextBox1.Text = sdr["编号"].ToString();
TextBox2.Text = sdr["姓名"].ToString();
TextBox3.Text = sdr["性别"].ToString();
}
conn.Close();
}
//提交
protected void Button5_Click(object sender, EventArgs e)
{
string sql = "update [Sheet1$] set 姓名=@b,性别=@c where 编号=@a";
OleDbParameter[] pm = new OleDbParameter[3];
pm[0] = new OleDbParameter("@a",TextBox1.Text);
pm[1] = new OleDbParameter("@b",TextBox2.Text);
pm[2] = new OleDbParameter("@c",TextBox3.Text);

OleDbConnection conn = new OleDbConnection(connStr);
conn.Open();
OleDbCommand cmd = new OleDbCommand(sql,conn);
foreach (OleDbParameter item in pm)
{
cmd.Parameters.Add(item);
}
int i = cmd.ExecuteNonQuery();
conn.Close();
if (i>0)
{
BindList();
Response.Write("修改成功");
}
else
{
Response.Write("修改失败");
}
}
}
}