Question

感谢一些帮助，我解决了以前的一些问题，但是当我点击注册按钮（button1）时，我收到以下错误：

ERROR = ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

我的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.Odbc;


public partial class CompanyLogin : System.Web.UI.Page
{
protected void Button1_Click(object sender, EventArgs e)
{
    OdbcConnection conn = new OdbcConnection();
    conn.ConnectionString = @".\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\VCtemps.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";

    string sql = "insert into company values(@CompName, @BusinessType, @Pword)";
    OdbcCommand cmd = new OdbcCommand(sql);
    string CompName = txtCompName.Text;
    string BusinessType = DropDownList1.Text;
    string Pword = txtPassword.Text;
    conn.Open();
    cmd.Connection = conn;

    cmd.CommandText = "insert into company(CompName, BusinessType, Pword) Values(@CompName,@BusinessType,@Pword);";
    cmd.Parameters.AddWithValue("@CompName",SqlDbType.VarChar);    
    cmd.Parameters.AddWithValue("@BusinessType",SqlDbType.VarChar);    
    cmd.Parameters.AddWithValue("@Pword",SqlDbType.VarChar);    

cmd.ExecuteNonQuery();

    conn.Close();

    txtCompName.Text = "";
    txtPassword.Text = "";
    DropDownList1.Text = "";
}
}

Answer 1

非常自我解释的错误消息。您需要在连接字符串中指定数据源和驱动程序。访问Connection Strings for Database以查找您要定位的数据库的连接字符串应该是什么样的。

Answer 2

在你的连接字符串中，你已经逃脱了你的黑色瑕疵而你已经在字符串前面使用了@符号。问题可能是你已经做到了。删除@或删除两个地方的双斜杠。

@".\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\VCtemps.mdf...etc

...但说实话，你不应该像这样对你的连接字符串进行硬编码。您应该将连接字符串添加到web.config文件到ConnectionStrings部分：

<configuration>
    <connectionStrings>
       <add name="ConnectionString" connectionString=".\SQLEXPRESS;AttachDbFilename=|DataDirectory|\VCtemps.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True" />
    </connectionStrings>
...

然后将您的代码更改为：

conn.ConnectionString = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

将数据保存到MSSQL文件时出错

2 个答案: