SQL异常存在同名数据库，或无法打开指定文件

Question

这是我遇到的问题：

Exception occurred
epos\SQLPlaygroundV1\SchoolDB.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.

SQL 脚本创建 table:

CREATE TABLE [dbo].[Student]
(
    [Id] INT IDENTITY NOT NULL PRIMARY KEY, 
    [FirstName] NCHAR(16) NULL, 
    [LastName] NCHAR(16) NULL, 
    [Age] NCHAR(3) NULL, 
    [DateOfBirth] DATE NULL, 
    [Enrolled] BIT NULL
)

C# 用于写入数据库：

using (SqlConnection connection = new SqlConnection("Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\Admin-PC\source\repos\SQLPlaygroundV1\SchoolDB.mdf;Integrated Security=True")) {
    using (SqlCommand command = new SqlCommand()) {
        command.Connection = connection;            
        command.CommandType = CommandType.Text;
        command.CommandText = "INSERT into Student (FirstName, LastName, Age, DateOfBirth, Enrolled)" +
                            " VALUES (@FirstName, @LastName, @Age, @DateOfBirth, @Enrolled)";
        command.Parameters.AddWithValue("@FirstName", "Bob");
        command.Parameters.AddWithValue("@LastName", "Bobson");
        command.Parameters.AddWithValue("@Age", "21");
        command.Parameters.AddWithValue("@DateOfBirth", "1990-01-01");
        command.Parameters.AddWithValue("@Enrolled", false);

        try {
            connection.Open();
            int recordsAffected = command.ExecuteNonQuery();
            Console.WriteLine(recordsAffected);
        } catch (Exception e) {
            Console.WriteLine("Exception occurred");
            Console.WriteLine(e.Message);
        } finally {
            connection.Close();
        }
        Console.ReadKey();
    }
}

我已确认不存在其他同名文件，连接字符串是从服务器资源管理器属性中复制并粘贴的 window。

我可以看到它存在并且在正确的路径中等等，我不明白为什么找不到它/无法访问它。

Answer 1

问题是连接查询，数据库路径，之前repos你只有一个反斜杠\你需要再加一个

SQL异常存在同名数据库，或无法打开指定文件

SQL Exception A database with the same name exists, or specified file cannot be opened

c#

sql-server

database-connection