本文整理汇总了VB.NET中System.Data.DataTableReader.GetSchemaTable方法的典型用法代码示例。如果您正苦于以下问题：VB.NET DataTableReader.GetSchemaTable方法的具体用法？VB.NET DataTableReader.GetSchemaTable怎么用？VB.NET DataTableReader.GetSchemaTable使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了DataTableReader.GetSchemaTable方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: TestGetSchemaTable
Private Sub TestGetSchemaTable()
' Set up the data adapter, using information from
' the AdventureWorks sample database.
' Modify the SQL expression to retrieve
' data from a different table.
Dim adapter As SqlDataAdapter = _
SetupDataAdapter("SELECT * FROM Sales.Customer")
' Fill the DataTable, retrieving all the schema information.
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
Dim table As New DataTable
adapter.Fill(table)
' Create the DataTableReader, and close it when done.
Using reader As New DataTableReader(table)
' Modify the column number to display information
' about a column other than column 0.
DisplaySchemaTableInfo(reader, 0)
End Using
Console.WriteLine()
Console.WriteLine("Press Enter to finish.")
Console.ReadLine()
End Sub
Private Sub DisplaySchemaTableInfo( _
ByVal reader As DataTableReader, ByVal ordinal As Integer)
' Given a DataTableReader, display schema
' information about a particular column.
Try
Dim schemaTable As DataTable = reader.GetSchemaTable()
Dim row As DataRow = schemaTable.Rows(ordinal)
For Each col As DataColumn In schemaTable.Columns
Console.WriteLine("{0}: {1}", _
col.ColumnName, row(col.Ordinal))
Next
Catch ex As IndexOutOfRangeException
Console.WriteLine("{0} is an invalid column number.", _
ordinal)
End Try
End Sub
Private Function SetupDataAdapter( _
ByVal sqlString As String) As SqlDataAdapter
' Assuming all the default settings, create a SqlDataAdapter
' working with the AdventureWorks sample database that's
' available with SQL Server.
Dim connectionString As String = _
"Data Source=(local);" & _
"Initial Catalog=AdventureWorks;" & _
"Integrated Security=true"
Return New SqlDataAdapter(sqlString, connectionString)
End Function