本文整理汇总了VB.NET中System.Data.DataSet.MergeFailed事件的典型用法代码示例。如果您正苦于以下问题：VB.NET DataSet.MergeFailed事件的具体用法？VB.NET DataSet.MergeFailed怎么用？VB.NET DataSet.MergeFailed使用的例子？那么恭喜您, 这里精选的事件代码示例或许可以为您提供帮助。您也可以进一步了解该事件所在类System.Data.DataSet的用法示例。
在下文中一共展示了DataSet.MergeFailed事件的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: DemonstrateMergeFailedEvent
Private Shared Sub DemonstrateMergeFailedEvent()
' Create a DataSet with one table containing two columns.
Dim dataSet As New DataSet("dataSet")
Dim table As New DataTable("Items")
' Add table to the DataSet.
dataSet.Tables.Add(table)
' Add two columns to the DataTable.
table.Columns.Add("id", Type.GetType("System.Int32"))
table.Columns.Add("item", Type.GetType("System.Int32"))
' Set the primary key to the first column.
table.PrimaryKey = new DataColumn() { table.Columns("id") }
' Add MergeFailed event handler for the table.
AddHandler dataSet.MergeFailed, _
New MergeFailedEventHandler(AddressOf Merge_Failed)
' Create a second DataTable identical to the first,
Dim t2 As DataTable = table.Clone()
' Set the primary key of the new table to the second column.
' This will cause the MergeFailed event to be raised when the
' table is merged into the DataSet.
t2.PrimaryKey = New DataColumn() { t2.Columns("item") }
' Merge table into the DataSet.
Console.WriteLine("Merging...")
dataSet.Merge(t2, false, MissingSchemaAction.Add)
End Sub
Private Shared Sub Merge_Failed(sender As object, _
e As MergeFailedEventArgs)
Console.WriteLine("Merge_Failed Event: '{0}'", e.Conflict)
End Sub