刷新c＃中的组合框 [英] refresh combo box in c#

问题描述

hi
我有3个组合框，每个组合框都选择特殊数据。当我按下combobox1时，它有2个物体！一个被选中。根据这个选择，我可以选择与其他人不同的combobox2特殊数据！当我选择其他值的combobox1时，在combobox2上删除了combobox2的值。

i写道：

  if （comboBox44.SelectedIndex ==  0 ）
 {
 S_DRV_Byte26 =（ byte ）（S_DRV_Byte26 | 0x00）; 
 comboBox43.Items.RemoveAt（ 2 ）; comboBox43.Items.RemoveAt（ 2 ）; 
} 
  else  
 {
 S_DRV_Byte26 =（ byte ）（S_DRV_Byte26& 0xff）; comboBox43.Refresh（）; 
} 

如何刷新组合框以便从中选择？

解决方案

这是一个解释c＃中级联组合框如何工作的链接：

在Winforms中级联ComboBox [ ^ ]



祝你好运，

OI

< blockquote>是的，你可以通过在combobox的selectionCommitedchange上调用第二组代码

hi i have 3 comboboxes that each of them selects special data. when i press on combobox1, it has 2 object! one is selected. according to this selection, i can select special data on combobox2 that is different with others! when i select on other value of combobox1, the values of combobox2 is deleted on combobox2.
i wrote:

if (comboBox44.SelectedIndex == 0)
            {
                S_DRV_Byte26 = (byte)(S_DRV_Byte26 | 0x00);
                comboBox43.Items.RemoveAt(2); comboBox43.Items.RemoveAt(2);
            }
            else
            {
                S_DRV_Byte26 = (byte)(S_DRV_Byte26 & 0xff);comboBox43.Refresh();
            }

how can i refresh comboboxes to select from first?

解决方案

Here is a link which explains how cascading combobox in c# works:
Cascading ComboBox In Winforms[^]

Good luck,,
OI

yes you can by calling the second set of code at selectionCommitedchange of combobox

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