在组合框列表项目选择用户控制应该激活。 [英] on combo box list item selection user contol should get active.

问题描述

我在vb.net上有一个窗口申请表

我有一个包含3个项目列表的组合框。

选择任何一个项目时，它应该激活表格上各自的用户控制。



谢谢



改进了que ..？



我有一个带有三个项目和三个用户控件的组合框的窗体。

因为我从组合框列表中选择了1项，其各自的用户控制应该是活动的。

和其余两个用户控件将处于非活动状态

I have a window application form on vb.net
I have a combo box with 3 items list.
on selection of any one item ,it should active the respective user control on the form.

thanks

Improved que..?

I have a windows form with a combo box with three items and three users controls.
as i select 1 item from the combo box list, its respective user control should be active.
and rest two user controls will be inactive

推荐答案

下面的代码显示如何根据组合框中的项目选择激活/停用（启用/禁用）按钮。

Hi,
Below code show how to activate / deactivate (Enable/disable) button based on the item selection in combobox.

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        If (ComboBox1.SelectedIndex <> -1) Then
            If (ComboBox1.Text = "One") Then
                Button1.Enabled = True
                Button2.Enabled = False
                Button3.Enabled = False
            ElseIf (ComboBox1.Text = "Two") Then
                Button1.Enabled = False
                Button2.Enabled = True
                Button3.Enabled = False
            ElseIf (ComboBox1.Text = "Three") Then
                Button1.Enabled = False
                Button2.Enabled = False
                Button3.Enabled = True
            End If
        End If
    End Sub

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Button1.Enabled = False
        Button2.Enabled = False
        Button3.Enabled = False
    End Sub

希望这对你有帮助！



最好的问候
Muthuraja

Hope this helps for you!.

Best Regards
Muthuraja

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