Visible/Invisible Conventions

You can change the visibility of a RadGrid control either client-side or server-side.

Client-side

To change the visibility of a grid client-side, obtain a reference to the grid's DOM element in the rendered page and alter its style.display property. Below is a rough outline of this approach:

<script type="text/javascript">
  function ShowGrid() {
    $find("<%=RadGrid1.ClientID%>").get_element().style.display = "";
  }
  function HideGrid() {
    $find("<%=RadGrid1.ClientID%>").get_element().style.display = "none";
  }
</script>
<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server">
  <!-- your grid definition here -->
</telerik:RadGrid>
<br />
<input id="btnShowGrid" type="button" value="Show grid" onclick="ShowGrid()" />
<input id="btnHideGrid" type="button" value="Hide grid" onclick="HideGrid()" />

Server-side

You can use the Visible property of the grid or a container in which the control resides to change the visibility of the grid. When using this approach to change the visibility of the grid, be aware of the following points:

• When the grid visibility is initially set to False, you must switch the visibility of the MasterTableView to display the grid after it has been hidden.

The MasterTableView object represents the actual HTML table of the rendered grid image in the client browser. The RadGrid instance is rendered as a div tag that encloses the HTML table. Of course, you can hide the RadGrid div as well if you wish.

• When the Visible property of the RadGrid control is set to False, the NeedDataSource event does not fire. (This has been done to optimize performance). When you change the Visible property of the grid to True, you must call the grid's Rebind method so that it can bind to its data.

• When you make a hidden container (such as a PlaceHolder or Panel) that holds the grid instance visible, you must rebind the grid by calling its Rebind method. (see previous point).