我遇到错误,这是我的代码。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace dbgen
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
using(SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = "Server=DESKTOP-7AN9GF5;Database=Velocity;Trusted_Connection=true";
// using the code here...
conn.ConnectionString = "connection_string";
conn.Open();
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=Northwind"))
{
connection.Open();
// Pool A is created.
}
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=pubs"))
{
connection.Open();
// Pool B is created because the connection strings differ.
}
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=Northwind"))
{
connection.Open();
// The connection string matches pool A.
}
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new mainform());
}
}
}
我正在使用Visual Studio 2013将数据库连接到SQL Server Express上的Velocity [数据库名称]。这是错误的屏幕截图。
感谢您的帮助。
答案 0 :(得分:0)
您必须为“ conn.ConnectionString”分配正确的连接字符串。 “ connection_string”不是连接字符串,应类似于“ Server = xxx; Database = xxx;”。
答案 1 :(得分:0)
您的连接字符串格式错误。 你为什么不使用:
body{
position: absolute;
padding:0;
margin: 0;
top:0;
left:0;
width: 100%;
height: 100%;
}