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How do I access page controls from a custom control?

Is there a way to access page controls from a custom control. I have some controls on my page and I want to access these controls from a custom control.

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4 answers 


YourControlType ltMetaTags = null;
Control ctl = this.Parent;
while (true)
{
    ltMetaTags = (ControlType)ctl.FindControl("ControlName");
    if (ltMetaTags == null)
    {
        ctl = ctl.Parent;
        if(ctl.Parent == null)
        {
            return;
        }
        continue;
    }
    break;
}

Example



System.Web.UI.WebControls.Literal ltMetaTags = null;
Control ctl = this.Parent;
while (true)
{
    ltMetaTags = (System.Web.UI.WebControls.Literal)ctl.FindControl("ltMetaTags");
    if (ltMetaTags == null)
    {
        if(ctl.Parent == null)
        {
            return;
        }
        ctl = ctl.Parent;
        continue;
    }
    break;
}
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There are actually several ways to do this:

Create public property in custom control

public Button PageButton { get; set; }

Then assign it in the OnInit page or OnLoad method

myUserControl.PageButton = myPageButton;

You can make it public and unbox Page:



public Button PageButton { get { return this.myPageButton; } }

In a user control:

MyPage myPage = (MyPage)this.Page;
myPage.PageButton.Text = "Hello";

The slowest but easiest way is to use FindControl:

this.Page.FindControl("myPageButton");
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its working for me:

I declare a shortcut on the page .aspx 

  <asp:Label ID="lblpage" runat="server" Text="this is my page"></asp:Label>
  <asp:Panel ID="pnlUC" runat="server"></asp:Panel>

In .aspx.cs

I add a UserControl viaPanel 

   UserControl objControl = (UserControl)Page.LoadControl("~/ts1.ascx");
   pnlUC.Controls.Add(objControl);

and access from .ascx

UserControl like this:

 Page page = this.Page;
 Label lbl = page.FindControl("lblpage") as Label;
 string textval = lbl.Text;
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    Parent.FindControl("hdnValue")
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