如何用C#为SQL Server数据库创建一个新表？

有两种方法来为数据库创建一个新表，

1.       我们可以用 ADO.NET 写出并执行 T-SQL 语句来创建表：

        private void CreateTableBtn_Click(object sender, System.EventArgs e)

        {

             // 打开连接         

            if (conn.State == ConnectionState.Open)

                conn.Close();

            ConnectionString = "Integrated Security=SSPI;" +

            "Initial Catalog=mydb;" +

            "Data Source=localhost;";

            conn.ConnectionString = ConnectionString;

 

            conn.Open();

 

            sql = "CREATE TABLE myTable" +

            "(myId INTEGER CONSTRAINT PKeyMyId PRIMARY KEY," +

            "myName CHAR(50), myAddress CHAR(255), myBalance FLOAT)";

            cmd = new SqlCommand(sql, conn);

            cmd.ExecuteNonQuery();

        }

 

 

2.       我们可以引用 SMO 库并用 SMO 函数来创建一个表

private void CreateTableBtn_Click(object sender, System.EventArgs e)

        {

            // 建立数据库服务器

            string connectionString = "...";

            SqlConnection connection =

                 new SqlConnection(connectionString);

            Server server =

                 new Server(new ServerConnection(connection));

 

            // 在我的个人数据库中创建表

            Database db = server.Databases["mydb"];

            // 建立 TestTable 的新表

            Table newTable = new Table(db, "TestTable");

            // 添加主键 ID 列

            Column idColumn = new Column(newTable, "ID");

 

            idColumn.DataType = DataType.Int;

            idColumn.Nullable = false;

            idColumn.Identity = true;

            idColumn.IdentitySeed = 1;

            idColumn.IdentityIncrement = 1;

 

             // 添加 "Title" 列

            Column titleColumn = new Column(newTable, "Title");

            titleColumn.DataType = DataType.VarChar(50);

            titleColumn.Nullable = false;

 

            // 为 Table 对象添加列

            newTable.Columns.Add(idColumn);

            newTable.Columns.Add(titleColumn);

 

            // 为表创建一个主键的索引

            Index index = new Index(newTable, "PK_TestTable");

            index.IndexKeyType = IndexKeyType.DriPrimaryKey;

 

            // 主键索引包括 1 列 "ID"

            index.IndexedColumns.Add(new IndexedColumn(index, "ID"));

 

            // 表中添加一个新的索引 .

            newTable.Indexes.Add(index);

 

            // 在数据库中实际创建一个表

            newTable.Create();

        }

 

相关帖子：

 

http://www.c-sharpcorner.com/UploadFile/mahesh/CreatingDBProgrammaticallyMCB11282005064852AM/CreatingDBProgrammaticallyMCB.aspx

http://social.msdn.microsoft.com/Forums/en/adodotnetdataproviders/thread/4929a0a8-0137-45f6-86e8-d11e220048c3

http://social.msdn.microsoft.com/Forums/en-US/adodotnetdataproviders/thread/ed6e07c6-1876-43cd-9bd4-f69dc22a7d58