这是asp一个web相关代码，包括exp1.aspx主文件，修改页面UserEdit.aspx,以及登陆界面login.aspx.
主文件，c#相关代码，采用的是access数据库。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
public partial class exp1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ShowGridView();
}
protected void ShowGridView()
{
//MyDb mydb = new MyDb();
string ur = DropDownList1.SelectedValue;
OleDbParameter[] para = { new OleDbParameter("ur", ur) };
if (ur == "All")
GridView1.DataSource = MyDb.getMyDb().GetData("select * from UserTB");
else
GridView1.DataSource = MyDb.getMyDb().GetData("select * from UserTB where UserRight=?", para);
GridView1.DataBind();
}
protected void Button1_Click(object sender, EventArgs e)
{
string u = TextBox1.Text; //用户名
string p = TextBox2.Text;//密码
string r = DropDownList2.Text;//权限
string sql = "insert into UserTB(UserName,UserPassword,UserRight) values(?,?,?)";
OleDbParameter[] para = { new OleDbParameter("u", u), new OleDbParameter("p", p), new OleDbParameter("r", r) };
MyDb.getMyDb().cud(sql, para);
ShowGridView();
}
protected void GridView1_RowDeleting1(object sender, GridViewDeleteEventArgs e)
{
int id = (int)e.Keys["UserID"];
string sql = "delete from UserTB where UserID=?";
OleDbParameter[] para = { new OleDbParameter("id", id) };
MyDb.getMyDb().cud(sql, para);
ShowGridView();
}
}
删除，采用控件
设置属性值
delete属性.jpg
单击如下按钮，写code
delete双击.jpg
code
protected void GridView1_RowDeleting1(object sender, GridViewDeleteEventArgs e)
{
int id = (int)e.Keys["UserID"];
string sql = "delete from UserTB where UserID=?";
OleDbParameter[] para = { new OleDbParameter("id", id) };
MyDb.getMyDb().cud(sql, para);
ShowGridView();
}
在变成模板，设置事件
delete弹窗.jpg
写一个弹窗事件
delete 函数.jpg
修改，控件操作
修改.PNG
UserEdit相关代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
public partial class UserEdit : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string id = Request.QueryString["id"];
OleDbDataReader dr = MyDb.getMyDb().GetData("Select * from UserTB where UserID=" + id);
dr.Read();
TextBox1.Text = dr["UserID"].ToString();
TextBox2.Text = dr["UserName"].ToString();
TextBox3.Text = dr["UserPassword"].ToString();
DropDownList1.Text = dr["UserRight"].ToString();
TextBox4.Text = dr["RegDate"].ToString();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
int id = int.Parse(TextBox1.Text);
string u = TextBox2.Text;
string p = TextBox3.Text;
string r = DropDownList1.Text;
DateTime d = DateTime.Parse(TextBox4.Text);
string sql = "update UserTB SET UserName =?,UserPassword =?,UserRight=?,RegDate=? where UserID=?";
OleDbParameter[] para = { new OleDbParameter("u",u), new OleDbParameter("p",p),
new OleDbParameter("r",r),new OleDbParameter("d",d), new OleDbParameter("id",id)
};
MyDb.getMyDb().cud(sql, para);
Response.Redirect("exp1.aspx");
}
}
还有一个登陆界面相关的代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
public partial class login : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string uname = TextBox1.Text;
string pwd = TextBox2.Text;
OleDbParameter[] para = {new OleDbParameter("uname",uname),new OleDbParameter("pwd",pwd) };
OleDbDataReader dr = MyDb.getMyDb().GetData("select * from UserTB where UserName=? and UserPassword=?",para);
if (!dr.Read())//dr里没有记录
Label1.Text = "用户名或密码错误！";
else
{
Session["UserName"] = dr["UserName"].ToString();
Response.Redirect("default.aspx");
}
}
}
草稿
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
public partial class stuEdit : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string id = Request.QueryString["id"];
OleDbDataReader dr = MyDb.getMyDb().GetData("select * from 学生表 where 学号 = " + id);
dr.Read();
TextBox1.Text = dr["学号"].ToString();
TextBox2.Text = dr["姓名"].ToString();
DropDownList1.Text = dr["性别"].ToString();
DropDownList2.Text = dr["院系"].ToString();
TextBox3.Text = dr["出生日期"].ToString();
TextBox4.Text = dr["身份证号"].ToString();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
// string id = TextBox1.Text;
long id = long.Parse(TextBox1.Text);
string u = TextBox2.Text;
string sex = DropDownList1.Text;
string yx= DropDownList2.Text;
DateTime bir =DateTime.Parse( TextBox3.Text);
string sfz = TextBox4.Text;
string sql = "update 学生表 SET 姓名 =?,性别 =?,院系 =? where 学号=?";
OleDbParameter[] para = { new OleDbParameter("u",u), new OleDbParameter("sex",sex),
new OleDbParameter("yx",yx), new OleDbParameter("id",id)
};
MyDb.getMyDb().cud(sql, para);
// Response.Redirect("exp1.aspx");
}
}
protected void GridView1_RowDeleted(object sender, GridViewDeletedEventArgs e)
{
/*
重点提醒：
GridView如果不绑定数据源控件，则以下两种方式，无法获取主键：
e.Keys[0].ToString()
e.Keys["id"].ToString()
请使用以下方式获取主键：
gv.DataKeys[e.RowIndex].Value
*/
int id = int.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString());
string sql = "delete from 学生表 where 学号 =?";
OleDbParameter[] para = { new OleDbParameter("id", id) };
MyDb.getMyDb().cud(sql, para);
ShowGridView();
}
}
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