C# 如何遍历表单上的所有复选框？
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How can I iterate through all checkboxes on a form?
提问by NinjaCat
I have a form that has many dynamically generated checkboxes. At runtime, how can I iterate through each of them so I can get their value and IDs?
我有一个包含许多动态生成的复选框的表单。在运行时，我如何遍历它们中的每一个，以便获得它们的值和 ID？
采纳答案by Michal Franc
foreach(Control c in this.Controls)
{
if(c is CheckBox)
{
// Do stuff here ;]
}
}
回答by harryovers
When they are created, get a list of references to the values, and then you can iterate over the list.
创建它们时，获取对值的引用列表，然后您可以遍历该列表。
回答by Max Galkin
Like this, maybe (if it's in Windows Forms):
像这样，也许（如果它在Windows Forms 中）：
foreach(var checkBox in myForm.Controls.OfType<CheckBox>())
{
//Do something.
}
回答by Adriaan Stander
If it is Windows Forms, you can try something like this:
如果是Windows Forms，您可以尝试这样的操作：
private void button1_Click(object sender, EventArgs e)
{
Dictionary<string, bool> checkBoxes = new Dictionary<string, bool>();
LoopControls(checkBoxes, this.Controls);
}
private void LoopControls(Dictionary<string, bool> checkBoxes, Control.ControlCollection controls)
{
foreach (Control control in controls)
{
if (control is CheckBox)
checkBoxes.Add(control.Name, ((CheckBox) control).Checked);
if (control.Controls.Count > 0)
LoopControls(checkBoxes, control.Controls);
}
}
Remember that container controls can contain children, so you might want to check those too.
请记住，容器控件可以包含子控件，因此您可能也需要检查这些控件。
回答by Robert Jeppesen
I use a simple extension method that will work for any control type:
我使用一种适用于任何控件类型的简单扩展方法：
public static IEnumerable<T> AllControls<T>(this Control startingPoint) where T : Control
{
bool hit = startingPoint is T;
if (hit)
{
yield return startingPoint as T;
}
foreach (var child in startingPoint.Controls.Cast<Control>())
{
foreach (var item in AllControls<T>(child))
{
yield return item;
}
}
}
Then, you can use it like so:
然后，您可以像这样使用它：
var checkboxes = control.AllControls<CheckBox>();
Using IEnumerable lets you choose how to store the results, and also lets you use linq:
使用 IEnumerable 可以让您选择如何存储结果，还可以让您使用 linq：
var checkedBoxes = control.AllControls<CheckBox>().Where(c => c.Checked);
回答by Allan Ramirez
I know that this is old, but It was easy as I can imagine.
我知道这很旧，但正如我想象的那样容易。
Just add all checkboxes into a List<Checkbox>, all checkboxes state are in the list and even if they change in the UI in the list changes too.
只需将所有复选框添加到 a 中List<Checkbox>，所有复选框状态都在列表中，即使它们在列表中的 UI 中更改也会更改。
List<Checkbox> checkboxes = new List<Checkboxes>();
checkboxes.Add(chk1);
checkboxes.Add(chk2);
//So add all checkboxes you wanna iterate
foreach(Checkbox checkbox in checkboxes){
//Do something using checkbox object
}
Hope this helps :)
希望这可以帮助 ：）
