Question

我有一个datagrid，我想将选择列存储到array list。

然后，当用户点击array list时，我想将submit发送到数据库中存储。

Private alBackUp As New System.Collections.ArrayList()

Private Sub CancelUserUpdate()

    Dim backuplist As String = String.Empty

    For i As Integer = 0 To backuplist.Rows.Count - 1
        backuplist = dgvBackup.CurrentRow.Index

        Dim col1 As String = dgvBackup.Item("col1", i).Value
        Dim col2 As String = dgvBackup.Item("col2", i).Value
        Dim col3 As String = dgvBackup.Item("col3", i).Value
        Dim col4 As String = dgvBackup.Item("col3", i).Value

        alBackUp.Add(col1,col2,col3,col4)

    Next
End Sub

当用户点击提交按钮时，将项目发送到存储在datebase

中

Private Sub CancelUserUpdate()
        For i As Integer = 0 To alBackUp.Rows.Count - 1                
            CancelUpdate(alBackUp)
        Next
End Sub

       Public Shared Function CancelUpdate(ByVal col1 As String, ByVal col2 As String, ByVal col3 As String, ByVal col4 As String) As DataTable

        .....
        .....
        .....

       End Function

Answer 1

首先，这一行：For i As Integer = 0 To backuplist.Rows.Count - 1看起来应该是For i As Integer = 0 To dgvBackup.Rows.Count - 1，因为'backuplist'被定义为'String'而不是'DataGridView'，但这应该是一个明显的错误显示在您的代码中。

其次，此backuplist = dgvBackup.CurrentRow.Index也应该向您显示错误，因为Index是“整数”类型，backuplist被声明为类型String。

然后你再次使用alBackup，好像它是DataGridView行中的alBackUp.Rows.Count：Array但它是{{1}}所以这应该是'alBackup.GetUpperBound （0）'

因此，您发布的代码充满了错误，请先尝试解决这些问题，然后再继续查看实际逻辑。

将多个项目从Datagrid插入到Arraylist

1 个答案: