[英]Crystal Reports using vb.net 2008 and SQL Server database
[英]How to code find and replace button using sql server 2008 & VB.Net
复制粘贴此代码(取自 msdn)
Public Sub ExecuteQuery(ByVal queryString As String, _
ByVal connectionString As String)
Using connection As New SqlConnection(connectionString)
Dim command As New SqlCommand(queryString, connection)
command.Connection.Open()
command.ExecuteNonQuery()
End Using
End Sub
....... 现在当你需要执行你的查询时写这个
Dim cn as String
Dim UpdateQry as String
cn = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\eDatabase.mdf;Integrated Security=True;User Instance=True"
UpdateQry = "Update students SET class = '" + combo2.text + "' WHERE class = '" + combo1.text + "'"
ExecuteQuery(UpdateQry, cn)
希望这对你有帮助。
问候
您想将您的类设置为 Combo2 的值,其中该值已与 Combo1 的值匹配。
"UPDATE students
SET class = "+combo2.text+"
where class = "+combo1.text+" "
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