强类型数据集问题 [英] Strongly type dataset issue

问题描述

大家好，

我遇到了已添加到项目中的类型化数据集的问题。出于某种原因，当代码到达fill命令时：

 Me.UsersTableAdapter1.Adapter.SelectCommand = dd3'.CommandText = SqlUsers 
 me .UsersTableAdapter1.Connection = OpenConnection 
 Me.UsersTableAdapter1.Fill（WA_MMTP_TrackerDataSet1.Users）
 

我得到一个" 对象引用未设置为对象的实例"错误。   我是数据集中的断点填充代码：

公共重载可覆盖函数填充（ ByVal dataTable As WA_MMTP_TrackerDataSet1.UsersDataTable）As Integer 
 Me.Adapter.SelectCommand = Me.CommandCollection（0）
 If（Me.ClearBeforeFill = true）Then 
 dataTable.Clear 
 End如果
 Dim returnValue As Integer = Me.Adapter.Fill（dataTable）
返回returnValue 
结束函数
 

它出错在Me.Adapter.Fill（dataTable）行上。为什么会这样呢？有点令人沮丧，因为这是从VS 2013生成的类型化数据集。感谢您的帮助。

Michael

解决方案

< blockquote>

是的但是什么是Me.Adapter，我认为它不是实例，也不是它的实例。

Hi All,

I'm having an issue with a typed dataset that Ive added to my project. For some reason when the code get to the fill command:

 Me.UsersTableAdapter1.Adapter.SelectCommand = dd3  '.CommandText = SqlUsers
me.UsersTableAdapter1.Connection = OpenConnection
Me.UsersTableAdapter1.Fill(WA_MMTP_TrackerDataSet1.Users)

I get a "object reference not set to an instance of a object" error.  I but a break point in the dataset Fill code:

 Public Overloads Overridable Function Fill(ByVal dataTable As WA_MMTP_TrackerDataSet1.UsersDataTable) As Integer
Me.Adapter.SelectCommand = Me.CommandCollection(0)
            If (Me.ClearBeforeFill = true) Then
                dataTable.Clear
            End If
 Dim returnValue As Integer = Me.Adapter.Fill(dataTable)
 Return returnValue
End Function

It errors out on the Me.Adapter.Fill(dataTable) line. Why is this happening. A little frustrating since this is a typed dataset generated from VS 2013. Thanks for any help.

Michael

解决方案

Yea but what is Me.Adapter, I don't see it instanced, neither what it is.

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