本文整理汇总了VB.NET中System.Data.AcceptRejectRule枚举的典型用法代码示例。如果您正苦于以下问题:VB.NET AcceptRejectRule枚举的具体用法?VB.NET AcceptRejectRule怎么用?VB.NET AcceptRejectRule使用的例子?那么恭喜您, 这里精选的枚举代码示例或许可以为您提供帮助。
在下文中一共展示了AcceptRejectRule枚举的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,您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。
示例1: CreateConstraint
Private Sub CreateConstraint(dataSet As DataSet, _
table1 As String, table2 As String, _
column1 As String, column2 As String)
' Declare parent column and child column variables.
Dim parentColumn As DataColumn
Dim childColumn As DataColumn
Dim foreignKeyConstraint As ForeignKeyConstraint
' Set parent and child column variables.
parentColumn = dataSet.Tables(table1).Columns(column1)
childColumn = dataSet.Tables(table2).Columns(column2)
foreignKeyConstraint = New ForeignKeyConstraint _
("SupplierForeignKeyConstraint", parentColumn, childColumn)
' Set null values when a value is deleted.
foreignKeyConstraint.DeleteRule = Rule.SetNull
foreignKeyConstraint.UpdateRule = Rule.Cascade
foreignKeyConstraint.AcceptRejectRule = AcceptRejectRule.None
' Add the constraint, and set EnforceConstraints to true.
dataSet.Tables(table1).Constraints.Add(foreignKeyConstraint)
dataSet.EnforceConstraints = True
End Sub
开发者ID:VB.NET开发者,项目名称:System.Data,代码行数:24,代码来源:AcceptRejectRule
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