Question

如何在C＃中使用asp.net创建动态数据库？请帮我。顺便说一下，我使用了4-5种方法，但对我来说并不起作用。

一种方法是：

String str;
SqlConnection myConn = new SqlConnection("Data Source=(LocalDB)\v11.0;Integrated security=True;"); //database=master

str = "CREATE DATABASE MyDatabase ON PRIMARY " +
      "(NAME = MyDatabase_Data, " +
      "FILENAME = 'C:\\MyDatabaseData.mdf', " +
      "SIZE = 2MB, MAXSIZE = 10MB, FILEGROWTH = 10%) " +
      "LOG ON (NAME = MyDatabase_Log, " +
      "FILENAME = 'C:\\MyDatabaseLog.ldf', " +
      "SIZE = 1MB, " +
      "MAXSIZE = 5MB, " +
      "FILEGROWTH = 10%)";

SqlCommand myCommand = new SqlCommand(str, myConn);

try
{
    myConn.Open();
    myCommand.ExecuteNonQuery();

    Label1.Text = "Database is created successfully";
}
catch (System.Exception ex)
{
    Label1.Text = ex.Message;
}
finally
{
    if (myConn.State == ConnectionState.Open)
    {
        myConn.Close();
    }
}

Answer 1

也许您可以尝试这些方式参考Error creating an SQL Server Database in Visual Studio

SQL Server应该已启动并正在运行
在SQL Server配置中启用TCP / IP
在Windows防火墙中打开端口
启用远程连接
启用SQL Server Browser服务
在防火墙
重新创建别名

希望它有所帮助。

Answer 2

首先，您需要连接到服务器上的master数据库

new SqlConnection("Data Source=ServerName;Database=master;Integrated security=True;");

另外，您的数据库大小需要至少为5MB，这是SQL Server核心功能所必需的。

CREATE DATABASE MyDatabase ON PRIMARY  
(NAME       = MyDatabase_Data,  
FILENAME    = 'C:\MyDatabaseData.mdf',  
SIZE        = 5MB,    --<-- File size needs to be minimum 5MB 
MAXSIZE     = 10MB, 
FILEGROWTH  = 10%)  
LOG ON 
(NAME       = MyDatabase_Log,  
FILENAME    = 'C:\MyDatabaseLog.ldf',  
SIZE        = 1MB,  
MAXSIZE     = 5MB,  
FILEGROWTH  = 10%);

否则，您会收到类似The database primary file must be at least 5 MB to accommodate a copy of the model database bla bla.....

之类的错误

Answer 3

非常感谢Angus Chung，你是一个很棒的人。他只是通过团队观察者帮助我，并告诉我wt是错误的......其实我正在使用它＆＃34;数据源=（LocalDB）\ v11.0;＆＃34;

但它应该是＆＃34;数据源=（LocalDB）\ v11.0;＆＃34;好好抓..谢谢.. !!!

在asp.net中创建动态SQL Server数据库

3 个答案: