Редагувати

Поділитися через

TemplateControl.ParseControl Method

  • Reference

Definition

Namespace:
System.Web.UI
Assembly:
System.Web.dll

Parses an input string into a Control object on the ASP.NET Web page or user control.

Overloads

ParseControl(String)

Parses an input string into a Control object on the Web Forms page or user control.
ParseControl(String, Boolean)

Parses an input string into a Control object on the ASP.NET Web page or user control.

Remarks

ParseControl is introduced in the .NET Framework version 3.5. For more information, see Versions and Dependencies.

ParseControl(String)

Parses an input string into a Control object on the Web Forms page or user control.

public:
 System::Web::UI::Control ^ ParseControl(System::String ^ content);
public System.Web.UI.Control ParseControl (string content);
member this.ParseControl : string -> System.Web.UI.Control
Public Function ParseControl (content As String) As Control

Parameters

content
String

A string that contains a user control.

Returns

Control

The parsed Control.

Examples

The following code example demonstrates how to create a Button Web server control using the ParseControl method, and then adds the result to the ControlCollection collection of a PlaceHolder Web server control named myPlaceholder.

<%@ Page language="c#" Debug="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ASP.NET Example</title>
<script runat="server">
    // System.Web.UI.TemplateControl.ParserControl;
    // The following example demonstrates the method 'ParseControl' of class TemplateControl.
    // Since TemplateControl is abstract, this sample has been written using 'Page' class which derives from 
    // 'TemplateControl' class.
    // A button object is created by passing a string to contstruct a button using ASP syntax, to the 
    // 'ParseControl' method. This button is added as one of the child controls of the page and displayed.
    void Page_Load(object sender, System.EventArgs e)
    {
      Control c = ParseControl("<asp:button text='Click here!' runat='server' />");
      myPlaceholder.Controls.Add(c);
    }
    </script>
  </head>
  <body>
    <form id="form1" runat="server">
      <asp:placeholder id ="myPlaceholder" runat="server" />
    </form>
  </body>
</html>

<%@ Page language="vb" Debug="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ASP.NET Example</title>
<script runat="server">
    '  System.Web.UI.TemplateControl.ParseControl;
    '  The following example demonstrates the method 'ParseControl' of class TemplateControl.
      
    ' Since TemplateControl is abstract, this sample has been written using 'Page' class which derives from 
    ' 'TemplateControl' class.
    ' A button object is created by passing a string to contstruct a button using ASP syntax, to the 
    ' 'ParseControl' method. This button is added as one of the child controls of the page and displayed.

    Sub Page_Load(sender As Object, e As System.EventArgs)
       Dim c As Control 
       c = ParseControl("<asp:button text='Click here!' runat='server' />")
       myPlaceholder.Controls.Add(c)
    End Sub 'Page_Load
    </script>
  </head>

  <body>
    <form id="form1" runat="server">
      <asp:placeholder id ="myPlaceholder" runat="server" />
    </form>
  </body>
</html>

Remarks

The content parameter contains a user control, such as you would find in an .ascx file. This string cannot contain any code, because the ParseControl method never causes compilation.

See also

Applies to

ParseControl(String, Boolean)

Parses an input string into a Control object on the ASP.NET Web page or user control.

public:
 System::Web::UI::Control ^ ParseControl(System::String ^ content, bool ignoreParserFilter);
public System.Web.UI.Control ParseControl (string content, bool ignoreParserFilter);
member this.ParseControl : string * bool -> System.Web.UI.Control
Public Function ParseControl (content As String, ignoreParserFilter As Boolean) As Control

Parameters

content
String

A string that contains a user control.

ignoreParserFilter
Boolean

A value that specifies whether to ignore the parser filter.

Returns

Control

The parsed control.

Remarks

The content parameter contains a user control (the contents of an .ascx file). This string cannot contain any code, because the ParseControl method never causes compilation.

The ignoreParserFilter parameter allows the PageParserFilter class to be ignored. The PageParserFilter class is used by the ASP.NET parser to determine whether an item is allowed in the page at parse time.

Applies to