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= "TextBox1 " > 请输入用户名！ </asp:RequiredFieldValidator> <br />
<br />
<asp:Label ID= "Label2 " runat= "server " Text= "密码： "> </asp:Label>
<asp:TextBox ID= "TextBox2 " runat= "server "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RequiredFieldValidator2 " runat= "server " ControlToValidate= "TextBox2 "
ErrorMessage= "请输入密码！ "> </asp:RequiredFieldValidator> <br />
<br />
<asp:Button ID= "Button1 " runat= "server " OnClick= "Button1_Click " Text= "登陆 " />
<asp:Button ID= "Button2 " runat= "server " Text= "取消 " />
</div>
</form>
</body>
</html>
这行出错： sqlconn = "select user,name from jhtuser where user = " "+ yonghu+ " " and pass = " "+mima+ " " ";
出错信息：
C:\Program Files\Microsoft Visual Studio 8\Common7\IDE> "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\csc.exe " /t:library /utf8output /R: "C:\WINDOWS\assembly\GAC_MSIL\System.Configuration\2.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll " /R: "C:\WINDOWS\assembly\GAC_32\System.Web\2.0.0.0__b03f5f7f11d50a3a\System.Web.dll " /R: "C:\WINDOWS\assembly\GAC_MSIL\System\2.0.0.0__b77a5c561934e089\System.dll " /R: "C:\WINDOWS\assembly\GAC_MSIL\System.Drawing\2.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll " /R: "C:\WINDOWS\assembly\GAC_MSIL\System.Web.Services\2.0.0.0__b03f5f7f11d50a3a\System.Web.Services.dll " /R: "C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.dll " /R: "C:\WINDOWS\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll " /R: "C:\WINDOWS\assembly\GAC_32\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll " /R: "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll " /R: "C:\WINDOWS\assembly\GAC_MSIL\System.Web.Mobile\2.0.0.0__b03f5f7f11d50a3a\System.Web.Mobile.dll " /out: "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website1\d61112bf\fb265f28\App_Web_qgkqivbf.dll " /D:DEBUG /debug+ /optimize- /w:4 /nowarn:1659;1699 "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website1\d61112bf\fb265f28\App_Web_qgkqivbf.0.cs " "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website1\d61112bf\fb265f28\App_Web_qgkqivbf.1.cs " "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website1\d61112bf\fb265f28\App_Web_qgkqivbf.2.cs "
Microsoft (R) Visual C# 2005 编译器 版本 8.00.50727.42
用于 Microsoft (R) Windows (R) 2005 Framework 版本 2.0.50727
版权所有 (C) Microsoft Corporation 2001-2005。保留所有权利。
c:\Documents and Settings\X\My Documents\Visual Studio 2005\WebSites\WebSite1\login.aspx(20,64): error CS1002: 应输入 ;
c:\Documents and Settings\X\My Documents\Visual Studio 2005\WebSites\WebSite1\login.aspx(20,75): error CS1002: 应输入 ;
c:\Documents and Settings\X\My Documents\Visual Studio 2005\WebSites\WebSite1\login.aspx(20,89): error CS1002: 应输入 ;
c:\Documents and Settings\X\My Documents\Visual Studio 2005\WebSites\WebSite1\login.aspx(20,97): error CS1002: 应输入 ;
[解决办法]
sqlconn = "select user,name from jhtuser where user = ' "+ yonghu+ " ' and pass = ' "+mima+ " ' ";
[解决办法]
sqlconn = "select user,name from jhtuser where user = ' "+ yonghu+ " ' and pass = ' "+mima+ " ' ";
不可用“”号 （ ' "+ yonghu+ " '）（ ' "+mima+ " ' "）
[解决办法]
顶
将字段值的双引,改成单引号
[解决办法]
string mySel= "SELECT count(*) as iCount from user where UserID= " "+userid+ " " ";
如果UserID字段是整数的话，可以这么写 where UserID= "+userid+ " ";
如果是字符型要这么写 where UserID= ' "+userid+ " ' ";
你的是错的哦 仔细对照下