从CheckBoxList中删除选择 [英] Delete Selection from CheckBoxList
问题描述
我有一个Windows应用程序，可以在一个复选框列表中显示来自访问数据库的用户
。我试图做的是从复选框列表中选择一个或多个用户
，循环并删除相应的
信息。我已经设置了一个文本框来打印生成的
的SQL字符串，它似乎是正确的。
UPDATE tblName SET EmployeeName = Null WHERE（ID IN （n1，n2））;
如果我选择3个ID为44,67,78的用户并点击删除按钮，
只有id为44的用户才被删除，即使所有3个用户都在SQL字符串中反映了
。
有什么建议吗？
I have a windows application that displays users from access database
in a checkboxlist. What I am attempting to do is select a user or users
from the checkboxlist, loop through, and delete their corresponding
information. I have setup a textbox to print the SQL string that is
generated and it seems to be correct.
UPDATE tblName SET EmployeeName = Null WHERE (ID IN(n1,n2));
If I select 3 users with id''s 44, 67, 78 and click ''remove'' button,
only the user with id 44 is removed even though all 3 users are
reflected in the SQL string.
Any suggestions?
推荐答案
如果你真的想要删除你应该做的信息：
从tblName删除WHERE ID IN（ n1，n2，n3）
但是如果你显示一些代码就更容易看出是否有问题
Greetz Peter
-
今天的编程是软件工程师之间的竞赛，他们正在努力建立更大，更好的防止白痴的程序，以及宇宙试图产生更大更好的白痴。到目前为止，宇宙正在赢得胜利。
" Will Lastname" < Wh是**** @ brinkster.net> schreef在bericht
新闻：11 ********************** @ g49g2000cwa.googlegr oups.com ...
If you realy want to delete the info you should do:
delete from tblName WHERE ID IN(n1,n2,n3)
but if you show some code it''s easier to see if something is wrong
Greetz Peter
--
Programming today is a race between software engineers striving to build
bigger and better idiot-proof programs, and the Universe trying to produce
bigger and better idiots. So far, the Universe is winning.
"Will Lastname" <wh****@brinkster.net> schreef in bericht
news:11**********************@g49g2000cwa.googlegr oups.com...
我有一个Windows应用程序，它在一个复选框列表中显示来自访问数据库的用户
。我试图做的是从复选框列表中选择一个或多个用户，循环并删除相应的
信息。我已经设置了一个文本框来打印生成的SQL字符串，它似乎是正确的。
UPDATE tblName SET EmployeeName = Null WHERE（ID IN（n1，n2））;
如果我选择ID为'44,47,78的3个用户并点击''删除''按钮，
只有id为44的用户被删除，即使所有3个用户都是
反映在SQL字符串中。
有什么建议吗？
I have a windows application that displays users from access database
in a checkboxlist. What I am attempting to do is select a user or users
from the checkboxlist, loop through, and delete their corresponding
information. I have setup a textbox to print the SQL string that is
generated and it seems to be correct.
UPDATE tblName SET EmployeeName = Null WHERE (ID IN(n1,n2));
If I select 3 users with id''s 44, 67, 78 and click ''remove'' button,
only the user with id 44 is removed even though all 3 users are
reflected in the SQL string.
Any suggestions?
还有一件事，你在使用参数吗？ br />
Greetz Peter
-
今天的编程是软件工程师努力建立的竞赛
更大，更好的防止白痴的程序，宇宙试图制作更大更好的白痴。到目前为止，宇宙正在赢得胜利。
One more thing, are you working with parameters?
Greetz Peter
--
Programming today is a race between software engineers striving to build
bigger and better idiot-proof programs, and the Universe trying to produce
bigger and better idiots. So far, the Universe is winning.
感谢Peter的快速回复。这是一个代码示例：
Dim strSQL As String =" UPDATE tblSoftware Set EmployeeName = Null
WHERE（ID IN（"
）
Dim objConn As New OleDb.OleDbConnection
objConn.ConnectionString =
System.Configuration.ConfigurationSettings.AppSettings（" strConnection"）
for c = 0 to i
iid = clBox.SelectedValue
Dim strSQLBuilder As String ="" ;
如果我> c那么
strSQLBuilder + = strSQLBuilder& iid&"，"
ElseIf i = c然后
strSQLBuilder + = iid&"））;"
End如果
strSQL = strSQL& strSQLBuilder
下一页
我喜欢那个签名！
Thanks for the quick reply Peter. Here is a code sample:
Dim strSQL As String = "UPDATE tblSoftware Set EmployeeName = Null
WHERE (ID IN("
Dim objConn As New OleDb.OleDbConnection
objConn.ConnectionString =
System.Configuration.ConfigurationSettings.AppSett ings("strConnection")
For c = 0 To i
iid = clBox.SelectedValue
Dim strSQLBuilder As String = ""
If i > c Then
strSQLBuilder += strSQLBuilder & iid & ","
ElseIf i = c Then
strSQLBuilder += iid & "));"
End If
strSQL = strSQL & strSQLBuilder
Next
I love that signature by the way!
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