asp.net access child page control in master page code behind.

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Hi,

I have a master page where contententplaceholder1 is defined and on the master page have two buttons, buttonA and buttonB. I have a aspx page "page.aspx" which has a content2 which load in contentplaceholder1 of master page.

on page.aspx there are two asp panel PanelA and PanelB. How can i enable PanelA of page.aspx when buttonA in the master page is clicked and disable PanelB and Vice-Versa.

Please help.

Regards
KD

Posted 3-Jan-15 2:02am

Kedar.Kamwal

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2 solutions

Solution 1

You need to find control inside content page from master page, for that you can use find control method several times based on control hierarchy. Refer http://weblog.west-wind.com/posts/2006/Apr/09/ASPNET-20-MasterPages-and-FindControl[^] and it will help you to find control.

Posted 3-Jan-15 2:14am

DamithSL

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Kedar.Kamwal · Accepted Answer · 2015-01-04T15:27:00

I Have Created a function in master.cs and than passed the control by id to the function. Please find complete code below.

protected void btnUpload_Click(object sender, ImageClickEventArgs e)
{
try
{
var control = FindWebControlByIdInControl(this, "pnUploadFile");
if (control != null)
{
control.Visible = true;
}
}
catch (Exception ex)
{
}
}

private WebControl FindWebControlByIdInControl(Control control, string id)
{
foreach (Control childControl in control.Controls)
{
if (childControl.ID != null && childControl.ID.Equals(id, StringComparison.OrdinalIgnoreCase) && childControl is WebControl)
{
return (WebControl)childControl;
}

if (childControl.HasControls())
{
WebControl result = FindWebControlByIdInControl(childControl, id);
if (result != null) return result;
}
}

return null;
}