.net判断用户是否登陆的例子ACCESS
2007-03-19 17:09
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给你一个参考<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%...@Page Language="C#" Debug="true"%>
<%...@import namespace="System.Data"%>
<%...@import namespace="System.Data.OleDb"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>登陆系统</title>
</head>
<script language="C#" runat="server">...
OleDbConnection conn;
OleDbCommand cmd;
void Page_Load(Object sender,EventArgs e)
...{
string connstr="Provider=MicroSoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("zhuce.mdb");
conn=new OleDbConnection(connstr);
conn.Open();
}
void button1_click(Object sender,EventArgs e)
...{
if(Page.IsValid)
...{
string sqlstr="select * from zhuce where username='"+yhm.Text+"' and password='"+mm.Text+"'";
cmd=new OleDbCommand(sqlstr,conn);
OleDbDataReader reader;
reader=cmd.ExecuteReader();
if(reader.Read())
...{
Session["xm"]=reader["truename"];
Response.Redirect("aa.htm");
reader.Close();
}
else
...{
reader.Close();
label1.Text="用户名或密码错误";
yhm.Text="";
mm.Text="";
}
}
}
void button2_click(Object sender,EventArgs e)
...{
}
</script>
<style>...
.table{...}{position:absolute;width:300;filter:progid:DXImageTransform.Microsoft.gradient(enabled='true',GradientType=1,startColorstr=#808000, endColorstr=#FFFF00) ;}
tr{...}{font:9pt verdana;}
table{...}{border-top:#66ccff 1px solid;border-left:#66ccff 1px solid;border-right:#66ccff 1px solid;
border-bottom:#66ccff 1px solid;}
.textbox{...}{BACKGROUND: #ffffff; border:1 solid #6611ff; COLOR: #000000; FONT-SIZE: 9pt; FONT-STYLE: normal; FONT-VARIANT: normal; FONT-WEIGHT: normal; HEIGHT: normal; LINE-HEIGHT: normal}
.button{...}{background:#eeeeee;border:1 solid #6611ff;}
</style>
<body>
<form runat="server">
<br><br><br><br>
<table align="center" width="40%" cellpadding="0" cellspacing="0" border=1>
<tr>
<td height="20" bgcolor="#66CCFF"> </td>
</tr>
<tr>
<td height="149" align="center"> <asp:label ID="label1" runat="server"/>
<table>
<tr>
<td>用户名：<asp:textbox ID="yhm" runat="server" size="15" class="textbox"/>
<asp:requiredfieldvalidator ID="rfvyhm" ControlToValidate="yhm" runat="server"
InitialValue="" Display="Dynamic" ErrorMessage="用户名不能为空"/>
</td>
</tr>
<tr>
<td>
密 码：<asp:textbox ID="mm" runat="server" TextMode="Password" size="15" class="textbox"/>
<asp:requiredfieldvalidator ID="rfvmm" ControlToValidate="mm" runat="server"
InitialValue="" Display="Dynamic" ErrorMessage="请输入密码"/>
</td>
</tr>
<tr>
<td align="center"><asp:button ID="button1" OnClick="button1_click" runat="server" Text="确定" class="button"/>
<asp:button ID="button2" OnClick="button2_click" runat="server" Text="取消" class="button"/>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="20" bgcolor="#66FFFF"></td>
</tr>
</table>
</form>
</body>
</html>
<%...@Page Language="C#" Debug="true"%>
<%...@import namespace="System.Data"%>
<%...@import namespace="System.Data.OleDb"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>登陆系统</title>
</head>
<script language="C#" runat="server">...
OleDbConnection conn;
OleDbCommand cmd;
void Page_Load(Object sender,EventArgs e)
...{
string connstr="Provider=MicroSoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("zhuce.mdb");
conn=new OleDbConnection(connstr);
conn.Open();
}
void button1_click(Object sender,EventArgs e)
...{
if(Page.IsValid)
...{
string sqlstr="select * from zhuce where username='"+yhm.Text+"' and password='"+mm.Text+"'";
cmd=new OleDbCommand(sqlstr,conn);
OleDbDataReader reader;
reader=cmd.ExecuteReader();
if(reader.Read())
...{
Session["xm"]=reader["truename"];
Response.Redirect("aa.htm");
reader.Close();
}
else
...{
reader.Close();
label1.Text="用户名或密码错误";
yhm.Text="";
mm.Text="";
}
}
}
void button2_click(Object sender,EventArgs e)
...{
}
</script>
<style>...
.table{...}{position:absolute;width:300;filter:progid:DXImageTransform.Microsoft.gradient(enabled='true',GradientType=1,startColorstr=#808000, endColorstr=#FFFF00) ;}
tr{...}{font:9pt verdana;}
table{...}{border-top:#66ccff 1px solid;border-left:#66ccff 1px solid;border-right:#66ccff 1px solid;
border-bottom:#66ccff 1px solid;}
.textbox{...}{BACKGROUND: #ffffff; border:1 solid #6611ff; COLOR: #000000; FONT-SIZE: 9pt; FONT-STYLE: normal; FONT-VARIANT: normal; FONT-WEIGHT: normal; HEIGHT: normal; LINE-HEIGHT: normal}
.button{...}{background:#eeeeee;border:1 solid #6611ff;}
</style>
<body>
<form runat="server">
<br><br><br><br>
<table align="center" width="40%" cellpadding="0" cellspacing="0" border=1>
<tr>
<td height="20" bgcolor="#66CCFF"> </td>
</tr>
<tr>
<td height="149" align="center"> <asp:label ID="label1" runat="server"/>
<table>
<tr>
<td>用户名：<asp:textbox ID="yhm" runat="server" size="15" class="textbox"/>
<asp:requiredfieldvalidator ID="rfvyhm" ControlToValidate="yhm" runat="server"
InitialValue="" Display="Dynamic" ErrorMessage="用户名不能为空"/>
</td>
</tr>
<tr>
<td>
密 码：<asp:textbox ID="mm" runat="server" TextMode="Password" size="15" class="textbox"/>
<asp:requiredfieldvalidator ID="rfvmm" ControlToValidate="mm" runat="server"
InitialValue="" Display="Dynamic" ErrorMessage="请输入密码"/>
</td>
</tr>
<tr>
<td align="center"><asp:button ID="button1" OnClick="button1_click" runat="server" Text="确定" class="button"/>
<asp:button ID="button2" OnClick="button2_click" runat="server" Text="取消" class="button"/>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="20" bgcolor="#66FFFF"></td>
</tr>
</table>
</form>
</body>
</html>
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