相當於jQuery最接近（）在ASP.NET Web窗體

Question

我試圖找出一種方法來構建一個在C＃中的jQuery最接近的方法的一個稍微聰明的版本。即時通訊使用的通用方法，以找到所希望的控制，然後索引的控制鏈

public static T FindControlRecursive<T>(Control control, string controlID, out List<Control> controlChain) where T : Control 
{ 
    controlChain = new List<Control>(); 

    // Find the control. 
    if (control != null) 
    { 
     Control foundControl = control.FindControl(controlID); 

     if (foundControl != null) 
     { 
      // Add the control to the list 
      controlChain.Add(foundControl);  

      // Return the Control 
      return foundControl as T; 
     } 
     // Continue the search 
     foreach (Control c in control.Controls) 
     { 
      foundControl = FindControlRecursive<T>(c, controlID); 

      // Add the control to the list 
      controlChain.Add(foundControl); 

      if (foundControl != null) 
      { 
       // Return the Control 
       return foundControl as T; 
      } 
     } 
    } 
    return null; 
} 

稱之爲

List<Control> controlChain; 
var myControl = FindControls.FindControlRecursive<TextBox>(form, "theTextboxId"), out controlChain); 

要查找的id最接近元件或鍵入

// Reverse the list so we search from the "myControl" and "up" 
controlChain.Reverse(); 
// To find by id 
var closestById = controlChain.Where(x => x.ID.Equals("desiredControlId")).FirstOrDefault(); 

// To find by type 
var closestByType = controlChain.Where(x => x.GetType().Equals(typeof(RadioButton))).FirstOrDefault(); 

將這是一個很好的方法，還是有沒有其他很酷的解決方案創造這個？ 您的考慮是什麼？

謝謝！

Answer 1

也許這樣的事情

public static IEnumerable<Control> GetControlHierarchy(Control parent, string controlID) 
{ 
    foreach (Control ctrl in parent.Controls) 
    { 
     if (ctrl.ID == controlID) 
      yield return ctrl; 
     else 
     { 
      var result = GetControlHierarchy(ctrl, controlID); 
      if (result != null) 
       yield return ctrl; 
     } 
     yield return null; 
    } 
}