本文整理汇总了VB.NET中System.Data.DataTable.Columns属性的典型用法代码示例。如果您正苦于以下问题：VB.NET DataTable.Columns属性的具体用法？VB.NET DataTable.Columns怎么用？VB.NET DataTable.Columns使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类System.Data.DataTable的用法示例。
在下文中一共展示了DataTable.Columns属性的2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: PrintValues
Private Sub PrintValues(ByVal table As DataTable)
Dim row As DataRow
Dim column As DataColumn
For Each row in table.Rows
For Each column In table.Columns
Console.WriteLine(row(column))
Next
Next
End Sub示例2: MainClass
' 导入命名空间
Imports System
Imports System.Data
Imports System.Data.SqlClient
public class MainClass
Shared Sub Main()
Dim thisConnection As New SqlConnection("server=(local)\SQLEXPRESS;" & _
"integrated security=sspi;database=MyDatabase")
Dim sql As String = "SELECT * FROM Employee"
Dim thisCommand As New SqlCommand(sql, thisConnection)
Try
thisConnection.Open()
Console.WriteLine("Connection Opened")
Dim thisReader As SqlDataReader = thisCommand.ExecuteReader()
Dim schema As DataTable = thisReader.GetSchemaTable()
For Each row As DataRow In schema.Rows
For Each col As DataColumn In schema.Columns
Console.WriteLine(col.ColumnName & " = " & row(col).ToString())
Next
Next
thisReader.Close()
Catch ex As SqlException
Console.WriteLine("Error: " & ex.ToString())
Finally
thisConnection.Close()
Console.WriteLine("Connection Closed")
End Try
End Sub
End Class