创建、更改和删除表
示例
若要使用所提供的任何代码示例，您必须选择创建应用程序所需的编程环境、编程模板和编程语言。有关详细信息，请参阅如何在 Visual Studio .NET 中创建 Visual Basic SMO 项目或如何在 Visual Studio .NET 中创建 Visual C# SMO 项目。
在 Visual Basic 中创建、更改和删除表
此代码示例创建了一个包含若干具有不同类型和用途的列的表。此代码还提供了有关以下内容的示例：如何创建标识字段、如何创建主键以及如何更改表属性。
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks database.
Dim db As Database
db = srv.Databases("AdventureWorks")
'Define a Table object variable by supplying the parent database and table name in the constructor.
Dim tb As Table
tb = New Table(db, "Test_Table")
'Add various columns to the table.
Dim col1 As Column
col1 = New Column(tb, "Name", DataType.NChar(50))
col1.Collation = "Latin1_General_CI_AS"
col1.Nullable = True
tb.Columns.Add(col1)
Dim col2 As Column
col2 = New Column(tb, "ID", DataType.Int)
col2.Identity = True
col2.IdentitySeed = 1
col2.IdentityIncrement = 1
tb.Columns.Add(col2)
Dim col3 As Column
col3 = New Column(tb, "Value", DataType.Real)
tb.Columns.Add(col3)
Dim col4 As Column
col4 = New Column(tb, "Date", DataType.DateTime)
col4.Nullable = False
tb.Columns.Add(col4)
'Create the table on the instance of SQL Server.
tb.Create()
'Add another column.
Dim col5 As Column
col5 = New Column(tb, "ExpiryDate", DataType.DateTime)
col5.Nullable = False
tb.Columns.Add(col5)
'Run the Alter method to make the change on the instance of SQL Server.
tb.Alter()
'Remove the table from the database.
tb.Drop()
在 Visual C# 中创建、更改和删除表
此代码示例创建了一个包含若干具有不同类型和用途的列的表。此代码还提供了有关以下内容的示例：如何创建标识字段、如何创建主键以及如何更改表属性。
{
//Connect to the local, default instance of SQL Server.
Server srv;
srv = new Server();
//Reference the AdventureWorks database.
Database db;
db = srv.Databases("AdventureWorks");
//Define a Table object variable by supplying the parent database and table name in the constructor.
Table tb;
tb = new Table(db, "Test_Table");
//Add various columns to the table.
Column col1;
col1 = new Column(tb, "Name", DataType.NChar(50));
col1.Collation = "Latin1_General_CI_AS";
col1.Nullable = true;
tb.Columns.Add(col1);
Column col2;
col2 = new Column(tb, "ID", DataType.Int);
col2.Identity = true;
col2.IdentitySeed = 1;
col2.IdentityIncrement = 1;
tb.Columns.Add(col2);
Column col3;
col3 = new Column(tb, "Value", DataType.Real);
tb.Columns.Add(col3);
Column col4;
col4 = new Column(tb, "Date", DataType.DateTime);
col4.Nullable = false;
tb.Columns.Add(col4);
//Create the table on the instance of SQL Server.
tb.Create();
//Add another column.
Column col5;
col5 = new Column(tb, "ExpiryDate", DataType.DateTime);
col5.Nullable = false;
tb.Columns.Add(col5);
//Run the Alter method to make the change on the instance of SQL Server.
tb.Alter();
//Remove the table from the database.
tb.Drop();
}