Sends server control content to a provided
HtmlTextWriter object, which writes the content to be rendered on the client.
Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)
Syntax
Visual Basic (Declaration)
Protected Friend Overridable Sub Render ( _
writer As HtmlTextWriter _
)
Dim writer As HtmlTextWriter
Me.Render(writer)
protected internal virtual void Render (
HtmlTextWriter writer
)
protected public:
virtual void Render (
HtmlTextWriter^ writer
)
protected void Render (
HtmlTextWriter writer
)
protected internal function Render (
writer : HtmlTextWriter
)
Parameters
- writer
The HtmlTextWriter object that receives the server control content.
Remarks
When developing custom server controls, you can override this method to generate content for an ASP.NET page.
Example
The following code example demonstrates overriding the Render method. The HasControls method is used to determine whether the server control has any child controls stored in its ControlCollection object, which is accessible through the Control.Controls property. If HasControls returns true and the first server control in the collection is literal text, then the literal text is appended to an HTML string.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Sub Render(Output As HtmlTextWriter)
If HasControls() And TypeOf Controls(0) Is LiteralControl
Dim Ctrl As LiteralControl = CType(Controls(0), LiteralControl)
Output.Write("<H2>Your Message: " & Ctrl.Text & "</H2>")
End If
End Sub
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
protected override void Render(HtmlTextWriter output) {
if ( (HasControls()) && (Controls[0] is LiteralControl) ) {
output.Write("<H2>Your Message: " + ((LiteralControl) Controls[0]).Text + "</H2>");
}
}
protected override function Render(output : HtmlTextWriter) {
var securityperm : SecurityPermission;
securityperm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter);
securityperm.Demand();
if ( (HasControls()) && (typeof(Controls[0]) == LiteralControl) ) {
output.Write("<H2>Your Message: " + (LiteralControl(Controls[0])).Text + "</H2>");
}
}
Platforms
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Version Information
.NET Framework
Supported in: 2.0, 1.1, 1.0
See Also