本文整理汇总了VB.NET中System.Data.DataRelation.DataRelation构造函数的典型用法代码示例。如果您正苦于以下问题：VB.NET DataRelation构造函数的具体用法？VB.NET DataRelation怎么用？VB.NET DataRelation使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.Data.DataRelation的用法示例。
在下文中一共展示了DataRelation构造函数的4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: CreateRelation
Private Sub CreateRelation()
' Code to get the DataSet not shown here.
' Get the DataColumn objects from two DataTable
' objects in a DataSet.
Dim parentCols As DataColumn() = _
{DataSet1.Tables("Customers").Columns("CustID"), _
DataSet1.Tables("Customers").Columns("OrdID")}
Dim childCols As DataColumn() = _
{DataSet1.Tables("Orders").Columns("CustID"), _
DataSet1.Tables("Orders").Columns("OrdID")}
' Create DataRelation.
Dim CustOrderRel As New DataRelation( _
"CustomersOrders", parentCols, childCols)
' Add the relation to the DataSet.
DataSet1.Relations.Add(CustOrderRel)
End Sub示例2: CreateRelation
Private Sub CreateRelation()
' Code to get the DataSet not shown here.
' Get the DataColumn objects from two DataTable
' objects in a DataSet.
Dim parentColumns() As DataColumn
Dim childColumns() As DataColumn
parentColumns(0) = DataSet1.Tables( _
"Customers").Columns("CustID")
parentColumns(1) = DataSet1.Tables( _
"Customers").Columns("OrdID")
childColumns(0) = DataSet1.Tables( _
"Orders").Columns("CustID")
childColumns(1) = DataSet1.Tables( _
"Orders").Columns("OrdID")
' Create DataRelation.
Dim CustOrderRel As New DataRelation( _
"CustomersOrders", parentColumns, childColumns)
' Add the relation to the DataSet.
DataSet1.Relations.Add(CustOrderRel)
End Sub示例3: CreateRelation
Private Sub CreateRelation()
' Code to get the DataSet not shown here.
' Get the DataColumn objects from two DataTable
' objects in a DataSet.
Dim parentColumn As DataColumn = DataSet1.Tables( _
"Customers").Columns("CustID")
Dim childColumn As DataColumn = _
DataSet1.Tables("Orders").Columns("CustID")
' Create DataRelation.
Dim bConstraints As Boolean = True
Dim customerOrdersRelation As DataRelation = _
New DataRelation("CustomersOrders", _
parentColumn, childColumn, bConstraints)
' Add the relation to the DataSet.
DataSet1.Relations.Add(customerOrdersRelation)
End Sub示例4: CreateRelation
Private Sub CreateRelation()
' Code to get the DataSet not shown here.
' Get the DataColumn objects from two DataTable
' objects in a DataSet.
Dim parentColumns() As DataColumn
Dim childColumns() As DataColumn
parentColumns(0) = DataSet1.Tables( _
"Customers").Columns("CustID")
parentColumns(1) = DataSet1.Tables( _
"Customers").Columns("OrdID")
childColumns(0) = DataSet1.Tables( _
"Orders").Columns("CustID")
childColumns(1) = DataSet1.Tables( _
"Orders").Columns("OrdID")
Dim bConstraints As Boolean = True
' Create DataRelation.
Dim CustOrderRel As New DataRelation( _
"CustomersOrders", parentColumns, childColumns, _
bConstraints)
' Add the relation to the DataSet.
DataSet1.Relations.Add(CustOrderRel)
End Sub