VB.NET DataRelation构造函数代码示例

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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？那么恭喜您, 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，您的评价将有助于我们的系统推荐出更棒的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

开发者ID:VB.NET开发者，项目名称:System.Data，代码行数:18，代码来源:DataRelation

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

开发者ID:VB.NET开发者，项目名称:System.Data，代码行数:23，代码来源:DataRelation

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

开发者ID:VB.NET开发者，项目名称:System.Data，代码行数:18，代码来源:DataRelation

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

开发者ID:VB.NET开发者，项目名称:System.Data，代码行数:25，代码来源:DataRelation

注：本文中的System.Data.DataRelation.DataRelation构造函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。