原文地址 WinForm自定义函数FindControl实现按名称查找控件
本文所述实例实现WinForm自定义函数FindControl实现按名称查找控件的功能，在C#程序开发中有一定的实用价值。
/// <summary>
/// 按名称查找控件
/// </summary>
/// <param name="parentControl">查找控件的父容器控件</param>
/// <param name="findCtrlName">查找控件名称</param>
/// <returns>若没有查找到返回NULL</returns>
public static Control FindControl(this Control parentControl, string findCtrlName)
{
Control _findedControl = null;
if (!string.IsNullOrEmpty(findCtrlName) && parentControl != null)
{
foreach (Control ctrl in parentControl.Controls)
{
if (ctrl.Name.Equals(findCtrlName))
{
_findedControl = ctrl;
break;
}
}
}
return _findedControl;
}
/// <summary>
/// 将Control转换某种控件类型
/// </summary>
/// <typeparam name="T">控件类型</typeparam>
/// <param name="control">Control</param>
/// <param name="result">转换结果</param>
/// <returns>若成功则返回控件；若失败则返回NULL</returns>
public static T Cast<T>(this Control control, out bool result) where T : Control
{
result = false;
T _castCtrl = null;
if (control != null)
{
if (control is T)
{
try
{
_castCtrl = control as T;
result = true;
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("将Control转换某种控件类型异常，原因:{0}", ex.Message));
result = false;
}
}
}
return _castCtrl;
}
测试代码
bool _sucess = false;
CheckBox _finded = panel1.FindControl("checkBox1").Cast<CheckBox>(out _sucess);
if (_sucess)
{
MessageBox.Show(_finded.Name);
}
else
{
MessageBox.Show("Not Finded.");
}