TagPrefixAttribute Constructor (String, String)
.NET Framework (current version)
Initializes a new instance of the TagPrefixAttribute class.
Assembly: System.Web (in System.Web.dll)
Parameters
- namespaceName
-
Type:
System.String
A string that identifies the custom control namespace.
- tagPrefix
-
Type:
System.String
A string that identifies the custom control prefix.
| Exception | Condition |
|---|---|
| ArgumentException | The namespaceName or the tagPrefix is null or an empty string (""). |
In defining your custom control, and prior to any code, you should invoke this class constructor as follows:
[assembly:TagPrefix(namespace, tag)]
The following code example shows how to define an assembly-level attribute that enables you to specify a tag prefix alias for a custom control. This attribute is used by tools such as Microsoft Visual Studio to automatically generate a @ Register directive in Web pages where the custom controls are used.
using System; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [assembly:TagPrefix("CustomControls", "custom")] namespace CustomControls { // Simple custom control public class MyCS_Control : Control { private String message = "Hello"; public virtual String Message { get { return message; } set { message = value; } } [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] protected override void Render( HtmlTextWriter writer) { writer.Write("<span style='background-color:aqua; font:8pt tahoma, verdana;'> " + this.Message + "<br>" + "C# version. The time on the server is " + System.DateTime.Now.ToLongTimeString() + "</span>"); } } }
.NET Framework
Available since 1.1
Available since 1.1
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