Question

如果包含某些特定字符串，是否可以折叠或隐藏某些ComboBoxItem？

我正在尝试

foreach (ComboBoxItem b in cboServers.Items)
{
      if (b.Content.ToString().Contains("prod")) 
      { b.Visibility = Visibility.Visible; } 
      else 
      { b.Visibility = Visibility.Collapsed; }
}

但不起作用，因为ComboBoxItem无法转换为String

//Read file's content. 
foreach (IniSection ContainerForThisServer in iniFile.Sections) 
{ 
    cboServidores.Items.Add(ContainerForThisServer.Name.ToUpper()); 
    FillTab(ContainerForThisServer.Name.ToUpper(), ContainerForThisServer); 
}

Answer 1

您的代码不起作用，因为您要添加大写字母的项目，而if语句会检查小写字母“ prod”，但为什么不阻止项目进入组合框呢？

foreach (IniSection ContainerForThisServer in iniFile.Sections) 
{ 
    if (b.Content.ToString().Contains("prod"))
    {
        cboServidores.Items.Add(ContainerForThisServer.Name.ToUpper()); 
        FillTab(ContainerForThisServer.Name.ToUpper(), ContainerForThisServer); 
    }
}

Answer 2

List<ComboBoxItem> hiddenItems = new List<ComboBoxItem>();
foreach (ComboBoxItem b in cboServers.Items)
{
    if (b.Text.Contains("PROD")) 
    { 
        hiddenItems.Add(b);
    }
}

foreach (ComboBoxItem hiddenItem in hiddenItems) 
{
    cboServers.Items.Remove(hiddenItem);
}
//hiddenItems now contains everything that was hidden if you want to use it at a later date

希望有帮助吗？

Answer 3

我找到了解决方法。

我必须使用：

foreach (IniSection ContainerForThisServer in iniFile.Sections) { 
ComboBoxItem i = new ComboBoxItem();
                i.Content = ContainerForThisServer.Name.ToUpper();
                cboServers.Items.Add(i);
 }

代替：

foreach (IniSection ContainerForThisServer in iniFile.Sections) { cboServers.Items.Add(ContainerForThisServer.Name.ToUpper()); 
 }

，现在无需使用.Remove（）即可完美实现可见性和折叠状态

foreach (ComboBoxItem b in cboServers.Items)
{
      if (b.Content.ToString().ToLower().Contains("prod")) 
      { b.Visibility = Visibility.Visible; } 
      else 
      { b.Visibility = Visibility.Collapsed; }
}

如果包含一些字符串，则隐藏ComboboxItem

3 个答案: