C# · 12月 26, 2021

WinForm实现按名称递归查找控件的方法

本文所述实例主要实现了WinForm实现按名称递归查找控件的功能,在C#项目开发中有一定的应用价值,分享给大家供大家参考借鉴。

关键代码如下:

/// <summary>/// 向下递归查找控件/// </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 DownRecursiveFindControl(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; } else { if (ctrl.Controls.Count > 0) _findedControl = DownRecursiveFindControl(ctrl,findCtrlName); } } } 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;}

测试代码如下:

bool _sucess = false;Check@R_542_2419@ _finded = this.DownRecursiveFindControl(“check@R_542_2419@1”).Cast<Check@R_542_2419@>(out _sucess);if (_sucess){ Message@R_542_2419@.Show(_finded.Name);}else{ Message@R_542_2419@.Show(“Not Finded.”);}

希望本文所述实例能够对大家的C#程序设计有所帮助!