Datagridview不会更新当前行值 [英] Datagridview doesn't update current row values

问题描述

VB2008

我有一个DataSeridView，MultiSelect = True，

SelectionMode = FullRowSelect。其中一列是复选框列。我有

a函数遍历所有选定的行并设置

此列的值。


For Each row In DataGridView1.SelectedRows

row.Cells（" MyCheckboxColumn"）。值= False

下一页


这似乎差不多了，但我注意到有时它不会更新

第一个或最后一个选定的行。经过调查，似乎更新了

值，但如果该行恰好是当前行，则更改为

，直到当前流量改变为止。我已经设法绕过这个问题，通过在我做出更改后设置CurrentCell = Nothing来解决这个问题，

但是这有清除选择的不良副作用。 />

有什么建议吗？


TIA

菲尔。

VB2008
I have a DataGridView with MultiSelect = True and
SelectionMode=FullRowSelect. One of the columns is a checkbox column. I have
a function that goes through all the selected rows and sets the value of
this column.

For Each row In DataGridView1.SelectedRows
row.Cells("MyCheckboxColumn").Value = False
Next

This seems to almost work, but I noticed that sometimes it does not update
the first or the last selected row. On investigation, it seems that the
value is updated, but if the row happens to be the currentrow, the change is
not displayed until the currentrow is changed. I have managed to get around
this problem by setting CurrentCell = Nothing after I have made the changes,
but this has the undesirable side effect of clearing the selection.

Any suggestions?

TIA
Phil.

推荐答案

嗨Phil，


我根据您的描述进行了测试，但没有重现

问题在我身边在我的测试应用程序中，DataGridView中的所有选定行都会立即更新

。


我在VS2008中创建一个WinForm应用程序项目并添加一个DataGridView和

a Form1上的按钮。我在

DataGridView中添加了一个DataGridViewCheckBoxColumn。以下是Form1.vb中的代码：


Public Class Form1

Private Sub Form1_Load（ByVal sender As System.Object，ByVal e As

System.EventArgs）处理MyBase.Load

Me.DataGridView1.SelectionMode =

DataGridViewSelectionMode.FullRowSelect

Me.DataGridView1 .RowCount = 10

for i As Integer = 0 to 9

Me.DataGridView1.Rows（i）.Cells（0）.Value = True

下一页

结束子


Private Sub Button1_Click（ByVal sender As System.Object，ByVal e As

系统。 EventArgs）处理Button1.Click

For Each row As DataGridViewRow In Me.DataGridView1.SelectedRows

row.Cells（0）.Value = False

下一页

结束次级

结束班级


构建并运行应用程序。使用

鼠标在DataGridView中选择一些行，然后单击按钮，所有选中的行立即更新。

您的代码与我的代码有什么区别吗？


此致，

Linda Liu

微软在线社区支持


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Hi Phil,

I performed a test based on your description but didn''t reproduce the
problem on my side. All selected rows in the DataGridView are updated
immediately in my test application.

I create a WinForm Application project in VS2008 and add a DataGridView and
a Button on the Form1. I add a DataGridViewCheckBoxColumn in the
DataGridView. The following is the code in the Form1.vb:

Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Me.DataGridView1.SelectionMode =
DataGridViewSelectionMode.FullRowSelect
Me.DataGridView1.RowCount = 10
For i As Integer = 0 To 9
Me.DataGridView1.Rows(i).Cells(0).Value = True
Next
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
For Each row As DataGridViewRow In Me.DataGridView1.SelectedRows
row.Cells(0).Value = False
Next
End Sub
End Class

Build and run the application. Select some rows in the DataGridView with
Mouse and click the Button, all selected rows are updated immediately.
Is there any difference between your code and mine?

Sincerely,
Linda Liu
Microsoft Online Community Support

Delighting our customers is our #1 priority. We welcome your comments and
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Linda Liu [MSFT]" < v - **** @ online.microsoft.com写信息

新闻：Fj ************** @ TK2MSFTNGHUB02.phx.gbl ...

"Linda Liu[MSFT]" <v-****@online.microsoft.comwrote in message
news:Fj**************@TK2MSFTNGHUB02.phx.gbl...

嗨菲尔，


我根据您的描述进行了测试，但没有重现

问题在我身边。在我的测试应用程序中，DataGridView中的所有选定行都会立即更新

。

Hi Phil,

I performed a test based on your description but didn''t reproduce the
problem on my side. All selected rows in the DataGridView are updated
immediately in my test application.

感谢您查看此内容。我的datagridview是一个更大的应用程序的一部分，

所以与你的代码有很大的不同。我将尝试在一个较小的应用程序中重现问题
。让我想到的主要事情是：b $ b不同的是我的数据是从数据源填充的（OleDb -

access / jet）。我不确定这是否相关。


菲尔。

Thanks for looking at this. My datagridview is part of a larger application,
so there is quite a lot of difference from your code. I shall try to
reproduce the problem in a smaller app. The main thing that springs to mind
that is different is that my data is populated from a datasource (OleDb -
access/jet). I''m not sure if that is relevant.

Phil.

" Linda Liu [MSFT]" < v - **** @ online.microsoft.com写信息

新闻：Fj ************** @ TK2MSFTNGHUB02.phx.gbl ...

"Linda Liu[MSFT]" <v-****@online.microsoft.comwrote in message
news:Fj**************@TK2MSFTNGHUB02.phx.gbl...

嗨菲尔，


我根据您的描述进行了测试，但没有重现

问题在我身边。在我的测试应用程序中，DataGridView中的所有选定行都会立即更新

。

Hi Phil,

I performed a test based on your description but didn''t reproduce the
problem on my side. All selected rows in the DataGridView are updated
immediately in my test application.

确定。我已经设法调整你的代码来重现问题。

最初创建datagridview没有列并替换Form_Load

如下：


Private Sub Form1_Load（ByVal sender As System.Object，ByVal e As

System.EventArgs）处理MyBase.Load


Me.DataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect

Dim data As New DataTable

data.Columns.Add（" Column1"，Type.GetType（" System.Int16" ））

我的整数= 0到9

data.Rows.Add（1）

下一页

Me.DataGridView1.DataSource = data


Dim col As New DataGridViewCheckBoxColumn

Me.DataGridView1.Columns.Add（col）

col.DataPropertyName =" Column1"


End Sub

OK. I have managed to adapt your code to reproduce the problem.
Create the datagridview initially with no columns and replace Form_Load
as follows:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load

Me.DataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect

Dim data As New DataTable
data.Columns.Add("Column1", Type.GetType("System.Int16"))
For i As Integer = 0 To 9
data.Rows.Add(1)
Next

Me.DataGridView1.DataSource = data

Dim col As New DataGridViewCheckBoxColumn
Me.DataGridView1.Columns.Add(col)
col.DataPropertyName = "Column1"

End Sub

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