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[英]I am getting this error message when I try to connect SQL Server using visual c#
[英]I am trying to connect to SQL Server by using the using(){} .. but my Visual Studio shows the following error :
錯誤
類,結構或接口成員聲明中的無效令牌“使用”
碼:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
namespace BusinessLayer
{
class EmployeeBusinessLayer
{
String Connectionstring = ConfigurationManager.ConnectionStrings["DBConStr"].ConnectionString;
using(SqlConnection con = new SqlConnection()){
}
}
}
您正在嘗試在類范圍內使用using
語句,這是無效的。 請嘗試以下操作:
public void YourMethod() {
string connStr = ConfigurationManager.ConnectionStrings["DBConStr"].ConnectionString.ToString();
using(SqlConnection connection = new SqlConnection()) {
//do something
}
}
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