C# - Add Children Controls Within A ServerControl Tags?

Nov 10, 2010

I'm working on a Navigation Menu. I've created below ServerControl and it works, but I want to allow users adding some standard ASP.NET controls within my ServerControl Tags like label, image and so on.

<MdsMenu:ServerControlMenu ID="ServerControlMenu1" runat="server">
<MdsMenu:animation AnimationSpeed="Normal" AnimationType="Opacity_Height" Delay="1000" DropShadow="true" />
<!-- HERE HAS TO HAVE SOME STANDARD ASP.NET CONTROLS -->
<!-- e.g <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> -->
</MdsMenu:MenuItem>
</MdsMenu:ServerControlMenu>

My problem is here that how I can get Child Controls within <MdsMenu:MenuItem> and show them like as they are in the output. P.S: I overwrite RenderContents method

protected override void RenderContents(HtmlTextWriter output)
{
output.Write(OutPutStringBuilder.ToString());
}

View 2 Replies


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Web Forms :: Add Children Controls Within A ServerControl Tags?

Nov 10, 2010

I'm working on a Navigation Menu. I've created below ServerControl and it works, but I want to allow users adding some standard ASP.NET controls within my ServerControl Tags like label, image and so on.

<MdsMenu:ServerControlMenu ID="ServerControlMenu1" runat="server">
<MdsMenu:animation AnimationSpeed="Normal" AnimationType="Opacity_Height" Delay="1000" DropShadow="true" />
<!-- HERE HAS TO HAVE SOME STANDARD ASP.NET CONTROLS -->
<!-- e.g <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> -->
</MdsMenu:MenuItem>
</MdsMenu:ServerControlMenu>

My problem is here that how I can get Child Controls within <MdsMenu:MenuItem> and show them like as they are in the output.

P.S:

I overwrite RenderContents method

protected override void RenderContents(HtmlTextWriter output)
{
output.Write(OutPutStringBuilder.ToString());
}

View 2 Replies

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Nov 17, 2010

I'm working on a custom ServerControl, I've created it like below :

[ParseChildren(true), PersistChildren(true)]
[ToolboxData("<{0}:Menu runat="server"></{0}:Menu>")]
public class Menu : WebControl
{
.....
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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......
[PersistenceMode(PersistenceMode.InnerProperty)]
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get
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[TemplateContainer(typeof(MenuItem))]
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<MdsMenu:MenuItem runat="server">
<Template>
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<asp:CheckBox ID="CheckBox1" runat="server" />
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<MdsMenu:MenuItem ID="MenuItem2" runat="server" Text="MenuItem 01">
<MdsMenu:MenuItem ID="MenuItem3" runat="server">
<Template>
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<asp:CheckBox ID="CheckBox2" runat="server" />
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</MdsMenu:MenuItem>
<MdsMenu:MenuItem ID="MenuItem6" runat="server" Text="MenuItem 06">
</MdsMenu:MenuItem>
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</MdsMenu:MenuItem>
</MdsMenu:MenuItem>
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Now, How can I Parse it and render it in RenderContent method ? !!!
The following method is always throw the first Exception, it means this.Controls is always empty !!! How can I do it and how I can access to the nested children in RenderControl method ?

public class Menu : WebControl
{
....
public override void RenderControl(HtmlTextWriter output)
{
if (!this.HasControls())
throw new Exception("Controls are empty");
....
}
}

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[Code]....

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[Code]....

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Here is the code for the control

[Code]....

And here's how I am using it in a sample page:

[Code]....

[Code]....

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<topic></topic>
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I try to do like this

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[Code]....

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