利用OleDb的GetOLEDBSchemaTable方法得到数据库架构信息
作者：孟宪会 出自：【孟宪会之精彩世界】 发布日期：2003年7月2日 9点16分16秒
我们可以利用OleDb的GetOLEDBSchemaTable方法得到数据库的所有视图，表，存储过程等信息。
GetDataBaseSchema.aspx
GetDataBaseSchama
GetDataBaseSchema.aspx.vb
Imports SystemImports System.DataImports System.Data.OleDbPublic Class GetDataBaseSchema Inherits System.Web.UI.Page Protected WithEvents DataGrid2 As System.Web.UI.WebControls.DataGrid Protected WithEvents DataGrid3 As System.Web.UI.WebControls.DataGrid Protected WithEvents DataGrid4 As System.Web.UI.WebControls.DataGrid Protected WithEvents Datagrid5 As System.Web.UI.WebControls.DataGrid Protected WithEvents Datagrid6 As System.Web.UI.WebControls.DataGrid Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid#Region " Web Form Designer Generated Code " Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Init InitializeComponent() End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles MyBase.Load '如何得到数据库中的架构信息？ 'GetOLEDBSchemaTable函数有两个方法： 'OLEDBSchemaGUID 'Restrictions '参数OLEDBSchemaGUID 的成员：Tables, Procedures, Views, Columns, Catlogs 等 '参数restrictions为限制条件，是一个对象数组，原来过虑架构结果信息， '每一个对象映射到所返回的datacolumn的值。 Dim strCnn As String strCnn = "Provider=SqlOLEDB; Data Source=.\NetSDK; Initial Catalog=pubs;User ID=sa;Password=;" Dim dataConn As New OleDbConnection(strCnn) Try dataConn.Open() Dim schemaTable As DataTable schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, Nothing) '得到全部的表、视图 DataGrid1.DataSource = schemaTable DataGrid1.DataBind() schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, New Object() {Nothing, Nothing, Nothing, "TABLE"}) '得到全部的用户表,用户表类型为Table，进行过虑 DataGrid2.DataSource = schemaTable DataGrid2.DataBind() schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, New Object() {Nothing, Nothing, Nothing, "VIEW"}) '得到全部的视图 DataGrid3.DataSource = schemaTable DataGrid3.DataBind() schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Procedures, Nothing) '得到全部的存储过程 DataGrid4.DataSource = schemaTable DataGrid4.DataBind() schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Provider_Types, Nothing) '得到全部支持的数据类型 Datagrid5.DataSource = schemaTable Datagrid5.DataBind() schemaTable = dataConn.GetOleDbSchemaTable(OleDbSchemaGuid.Primary_Keys, Nothing) Datagrid6.DataSource = schemaTable Datagrid6.DataBind() Catch ex As Exception Response.Write(ex.Message.ToString()) Finally dataConn.Close() End Try End SubEnd Class
