如何从包含任何容器中的控件的表单中获取所有控件?
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【中文标题】如何从包含任何容器中的控件的表单中获取所有控件?【英文标题】:How can I get all controls from a Form Including controls in any container? 【发布时间】:2010-12-06 04:47:36 【问题描述】:例如,我需要一种方法来禁用表单中的所有按钮或验证所有文本框的数据。有任何想法吗?提前致谢!
【问题讨论】:
【参考方案1】:最简单的选择可能是级联:
public static void SetEnabled(Control control, bool enabled)
control.Enabled = enabled;
foreach(Control child in control.Controls)
SetEnabled(child, enabled);
或类似的;您当然可以传递一个委托以使其相当通用:
public static void ApplyAll(Control control, Action<Control> action)
action(control);
foreach(Control child in control.Controls)
ApplyAll(child, action);
然后是这样的:
ApplyAll(this, c => c.Validate());
ApplyAll(this, c => c.Enabled = false; );
【讨论】:
并没有真正回答标题问题——如何获取所有控件——而不是编辑它们的属性。 @n00dles 引用问题:“例如,我需要禁用表单中的所有按钮” 写完评论后,我想……也许是需要编辑的标题。我有点恼火,因为我正在寻找标题问题的答案。虽然完成了它。 (从一个 Marc 到另一个!)【参考方案2】:也试试:
public List<Control> getControls(string what, Control where)
List<Control> controles = new List<Control>();
foreach (Control c in where.Controls)
if (c.GetType().Name == what)
controles.Add(c);
else if (c.Controls.Count > 0)
controles.AddRange(getControls(what, c));
return controles;
private void Form1_Load(object sender, EventArgs e)
var c = getControls("Button", this);
【讨论】:
【参考方案3】:我更喜欢使用惰性(迭代器)方法来解决问题,所以我使用的是这种方法:
/// <summary> Return all of the children in the hierarchy of the control. </summary>
/// <exception cref="ArgumentNullException"> Thrown when one or more required arguments are null. </exception>
/// <param name="control"> The control that serves as the root of the hierarchy. </param>
/// <param name="maxDepth"> (optional) The maximum number of levels to iterate. Zero would be no
/// controls, 1 would be just the children of the control, 2 would include the children of the
/// children. </param>
/// <returns>
/// An enumerator that allows foreach to be used to process iterate all children in this
/// hierarchy.
/// </returns>
public static IEnumerable<Control> IterateAllChildren(this Control control,
int maxDepth = int.MaxValue)
if (control == null)
throw new ArgumentNullException("control");
if (maxDepth == 0)
return new Control[0];
return IterateAllChildrenSafe(control, 1, maxDepth);
private static IEnumerable<Control> IterateAllChildrenSafe(Control rootControl,
int depth,
int maxDepth)
foreach (Control control in rootControl.Controls)
yield return control;
// only iterate children if we're not too far deep and if we
// actually have children
if (depth >= maxDepth || control.Controls.Count == 0)
continue;
var children = IterateAllChildrenSafe(control, depth + 1, maxDepth);
foreach (Control subChildControl in children)
yield return subChildControl;
【讨论】:
【参考方案4】:我一直在寻找基于类型启用/禁用控件的解决方案,因此我想出了类似于 Luiscencio 的方法(您也可以修改它以获取所有控件或更改其他属性)。
public static void setEnabled (ControlCollection cntrList ,bool enabled,List<Type> typeList = null)
foreach (Control cntr in cntrList)
if (cntr.Controls.Count == 0)
if (typeList != null)
if (typeList.Contains(cntr.GetType()))
cntr.Enabled = enabled;
else
cntr.Enabled = enabled;
else
setEnabled(cntr.Controls, enabled, typeList);
public void loadFormEvents()
List<Type> list = new List<Type> ();
list.Add(typeof(TextBox));
setEnabled(frm.Controls ,false,list);
【讨论】:
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