What is panel and placeholder in asp.net

Question

please give me example placeholder and panel

Satyapriya Nayak · Answer

Hi Arvind, The Panel control is used as a container for other controls. Ex:- Untitled Page runat="server" BackColor="#ff0000" Height="100px" Width="100px"> Hello World! Text="Hide Panel control" runat="server"/> using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; namespace Panel_placeholder { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (check1.Checked==true) { panel1.Visible=false; } else { panel1.Visible = true; } } } } The PlaceHolder control is used to reserve space for controls added by code. Ex:- Untitled Page Search this website: using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; namespace Panel_placeholder { public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { PlaceHolder1.Visible = false; } } } The advantage of using this PlaceHolder is that the textbox, button and other content contained within the PlaceHolder opening and closing HTML tags are kept as a single entity. This pays dividends when the example search form is accessed programmatically through the code behind page. For example, to hide the entire search form (i.e. text label, textbox and button) only a single line of C# code is required: PlaceHolder1.Visible = false; Thanks

Ankit Shivnakr · Answer

HI Panel will render Div tags in the brower where place holder will not render any tags. Panel have the styling capabilites, so you can set the cssclass or style properties such as background-color, forecolor etc...But Placeholder doesn't have any style attributes associated. You can not set cssclass or forecolor etc... consider the below example This is panel this is place holder the output rendered to the browser is as follows. This is panel this is place holder

What is panel and placeholder in asp.net

Answers (2)