foreach Page.Constrols

foreach Page.Constrols

• ChasAA

  That's because not all the controls on your page are textboxes... Try something like this:

  foreach(Control control in Page.Controls)
  {
      TextBox txt = control as TextBox; // txt will be null if control is not a TextBox
      if( txt != null && txt.ID.StartsWith("B"))
      {
          txt.Visible=false;
      }
  }

  Andrej

  
  
  

• MKBender

  Thank You Andrej

  
  

• byronfromwesleyan

  this code good get not error,But controls in page(textboxes) still not change property.(visible or readonly)
  No affected controls.Sorry.
  Thaks for help.

  
  

• haploidus

  With a web page, it gets a bit complicated. You'll have to navigate through whole control hierarchy... Try something like:

  protected void Page_Load(object sender, EventArgs e)
  {
  CheckControls(this);
  }
  

  // Put somewhere on the form or in some helper class
  private static void CheckControls(Control parentControl)
  {
  foreach (Control control in parentControl.Controls)
  {
  if (control.HasControls())
  {
  CheckControls(control);
  }
  TextBox txt = control as TextBox;
  if (txt != null && txt.ID.StartsWith("K"))
  {
  txt.Visible = false;
  }
  }
  }

  Andrej

  
  
  

• Harry Zhang

  Can you step through code with the debugger and see what's happening You can set the breakpoint on the line:

  TextBox txt = control as TextBox; // txt will be null if control is not a TextBox

  Andrej

  
  
  

• aragon127

  i write this code

  foreach (Control cn in Page.Controls)

  {

  if (cn.GetType() == typeof(TextBox) && cn.ID.StartsWith("K"))

  {

  cn.Visible = false;

  }

  }

  this code runs a windows application but same code not run web application

  thanks Andrej

  
  

• feby

  Thank You Andrej thanks yes,yes,yes
  it happened

  
  
• foreach Page.Constrols