Question

我的winform中有一个flowlayoutpanel，我想在加载表单时向flowlayoutpanel添加一些按钮，按钮的数量取决于我的数据集中存在多少项（行）

    Private Sub temp_Load(sender As Object, e As EventArgs) Handles MyBase.Load
                Me.ItemInfoTableAdapter1.Fill(DataSet11.ItemInfo)
    End Sub

    Private Sub FlowLayoutPanel1_Paint(sender As Object, e As PaintEventArgs) Handles FlowLayoutPanel1.Paint
                Dim btn As New Button
                Dim table as datatable = Dataset11.Tables("ItemInfo")


              For 'i think this will need a looping, but i have no idea how to write'
                With btn
                   .Text = ?? 'text will be the itemName'
                   .Tag = ??  'tag will be the itemPrice'
                End With
                Me.FlowLayoutPanel1.Controls.Add(btn)
              Next
    End Sub

我不知道接下来该做什么，请帮忙。

Answer 1

除了添加控件之外，此处的问题是从datatable 迭代。 Datatables包含DataRows。因此，您希望根据datatable的内容创建按钮。

试试这个：

    Dim btn As New Button
    For Each drow As DataRow In table.Rows
        btn = New Button
        btn.Text = drow.Item("itemName").ToString
        btn.Tag = drow.Item("itemPrice").ToString
        FlowLayoutPanel1.Controls.Add(btn)
    Next

此外，您可能会考虑更改FlowLayoutPanel中添加控件的事件。例如，您可以使用Form_Load事件。

如何动态创建用户控件？

1 个答案: