从列表视图的选定项中填充字符串 [英] Populating a string from the selected items of a listview
问题描述
我的应用程序中有一个列表视图，现在可以选择多个条目
。我现在需要将所选条目的值
放入一个字符串中以用于报告目的。
我使用以下语法但继续获取错误指定演员
无效。我不知道是什么导致了这个？可以有人帮忙吗？
每个项目如ListViewItem在
frmRepParams.lstAnalysis.SelectedItems
如果Len（strAnalysis）= 0然后
strAnalysis = Item.Text
Else：strAnalysis = strAnalysis& ， &
frmRepParams.lstAnalysis.SelectedValue
结束如果
下一页
I have a listview in my application which now enables multiple entries
to be selected. I now need to put the value of the selected entries
into a string to be used for reporting purposes.
I use the following syntax but keep getting the error "Specified cast
is not valid". I don''t know what''s causing this ? Can anybody help ?
For Each Item As ListViewItem In
frmRepParams.lstAnalysis.SelectedItems
If Len(strAnalysis) = 0 Then
strAnalysis = Item.Text
Else : strAnalysis = strAnalysis & ", " &
frmRepParams.lstAnalysis.SelectedValue
End If
Next
推荐答案
其他部分应该是这样吗？
strAnalysis = strAnalysis& ， &安培; Item.Text
" Robert Zirpolo" < RO ****** @ hotmail.com>在消息中写道
新闻：2d ************************** @ posting.google.c om ...
我的应用程序中有一个列表视图，现在可以选择多个条目
。我现在需要将所选条目的值
放入一个字符串中以用于报告目的。
我使用以下语法但继续获取错误指定演员
无效。我不知道是什么导致了这个？可以有人帮忙吗？
每个项目如ListViewItem在
frmRepParams.lstAnalysis.SelectedItems
如果Len（strAnalysis）= 0然后
strAnalysis = Item.Text
Else：strAnalysis = strAnalysis& ， &
frmRepParams.lstAnalysis.SelectedValue
结束如果
下一页
Should the Else part be like this?
strAnalysis = strAnalysis & ", " & Item.Text
"Robert Zirpolo" <ro******@hotmail.com> wrote in message
news:2d**************************@posting.google.c om...
I have a listview in my application which now enables multiple entries
to be selected. I now need to put the value of the selected entries
into a string to be used for reporting purposes.
I use the following syntax but keep getting the error "Specified cast
is not valid". I don''t know what''s causing this ? Can anybody help ?
For Each Item As ListViewItem In
frmRepParams.lstAnalysis.SelectedItems
If Len(strAnalysis) = 0 Then
strAnalysis = Item.Text
Else : strAnalysis = strAnalysis & ", " &
frmRepParams.lstAnalysis.SelectedValue
End If
Next
在其他部分，您可以这样做：
strAnalysis = strAnalysis& ， &安培; Item.Text
顺便说一句，如果lstAnalysis是listview控件，则SelectedValue不应该工作
因为它不是listview控件的成员而是一个成员从中导出ListBox和ComboBox的
ListControl。
希望这会有所帮助..
Imran。
" Robert Zirpolo" < RO ****** @ hotmail.com>在消息中写道
新闻：2d ************************** @ posting.google.c om ...
In the Else part, you could just do:
strAnalysis = strAnalysis & ", " & Item.Text
Btw, if lstAnalysis is a listview control, SelectedValue shouldn''t work
since its not a member of the listview control but a member of the
ListControl from which the ListBox and ComboBox are derived.
hope this helps..
Imran.
"Robert Zirpolo" <ro******@hotmail.com> wrote in message
news:2d**************************@posting.google.c om...
我的应用程序中有一个列表视图，现在可以选择多个条目。我现在需要将所选条目的值
放入一个字符串中以用于报告目的。
我使用以下语法但仍然收到错误指定的强制转换无效。我不知道是什么导致了这个？可以有人帮忙吗？
每个项目如ListViewItem在
frmRepParams.lstAnalysis.SelectedItems
如果Len（strAnalysis）= 0那么
strAnalysis = Item.Text
Else：strAnalysis = strAnalysis& ， &
frmRepParams.lstAnalysis.SelectedValue
结束如果
下一步
I have a listview in my application which now enables multiple entries
to be selected. I now need to put the value of the selected entries
into a string to be used for reporting purposes.
I use the following syntax but keep getting the error "Specified cast
is not valid". I don''t know what''s causing this ? Can anybody help ?
For Each Item As ListViewItem In
frmRepParams.lstAnalysis.SelectedItems
If Len(strAnalysis) = 0 Then
strAnalysis = Item.Text
Else : strAnalysis = strAnalysis & ", " &
frmRepParams.lstAnalysis.SelectedValue
End If
Next
道歉，你的权利。
但这不是问题，它在尝试填充字符串
时失败了。代码仍然带有指定的演员无效
错误。
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Apologies, your right.
But this is not the issue, it fails at the point it attempts to populate
the string. The code still sails with an "Specified cast not valid"
error.
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