急sql语句出现有关问题！
日期：2014-05-19 浏览次数：20416 次
急，sql语句出现问题！！
<%@ Page Language= "C# " %>
<%@ Import Namespace= "System.Data " %>
<%@ Import Namespace= "System.Data.OleDb " %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<script runat= "server ">
protected void Button1_Click(object sender, EventArgs e)
{
string dbname;
dbname = Server.MapPath( "system.mdb ");
OleDbConnection conn = new OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source= " + dbname);
conn.Open();
string yonghu, mima,sqlconn;
yonghu = TextBox1.Text;
mima = TextBox2.Text;
sqlconn = "select user,name from jhtuser where user = " "+ yonghu+ " " and pass = " "+mima+ " " ";
OleDbCommand cmd = new OleDbCommand(sqlconn, conn);
OleDbDataReader dr = cmd.ExecuteReader();
if (dr.Read())
Response.Redirect( "helps.htm ");
else
Response.Redirect( "index.asp ");
}
</script>
<html xmlns= "http://www.w3.org/1999/xhtml " >
<head runat= "server ">
<title> 无标题页 </title>
</head>
<body>
<form id= "form1 " runat= "server ">
<div>
<asp:Label ID= "Label1 " runat= "server " Text= "用户名： "> </asp:Label>
<asp:TextBox ID= "TextBox1 " runat= "server " ValidationGroup= "TextBox1 "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RequiredFieldValidator1 " runat= "server " ErrorMessage= "请输入用户名！ " ControlToValidate= "
<%@ Page Language= "C# " %>
<%@ Import Namespace= "System.Data " %>
<%@ Import Namespace= "System.Data.OleDb " %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<script runat= "server ">
protected void Button1_Click(object sender, EventArgs e)
{
string dbname;
dbname = Server.MapPath( "system.mdb ");
OleDbConnection conn = new OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source= " + dbname);
conn.Open();
string yonghu, mima,sqlconn;
yonghu = TextBox1.Text;
mima = TextBox2.Text;
sqlconn = "select user,name from jhtuser where user = " "+ yonghu+ " " and pass = " "+mima+ " " ";
OleDbCommand cmd = new OleDbCommand(sqlconn, conn);
OleDbDataReader dr = cmd.ExecuteReader();
if (dr.Read())
Response.Redirect( "helps.htm ");
else
Response.Redirect( "index.asp ");
}
</script>
<html xmlns= "http://www.w3.org/1999/xhtml " >
<head runat= "server ">
<title> 无标题页 </title>
</head>
<body>
<form id= "form1 " runat= "server ">
<div>
<asp:Label ID= "Label1 " runat= "server " Text= "用户名： "> </asp:Label>
<asp:TextBox ID= "TextBox1 " runat= "server " ValidationGroup= "TextBox1 "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RequiredFieldValidator1 " runat= "server " ErrorMessage= "请输入用户名！ " ControlToValidate= "
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