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asp.net building controls
group:ParseChildren(false) not adding sub objects in the designer
asp.net building controls:
I have been wrestling with this code for about 2 weeks now. My goal is to
create a table for formatting purposes. I want to standardize it as a webcontrol. I want all of the content to persist as top-level controls so that they are visible to the asp.net designer -- PersistChildren(true). The code works fine for run-time, but will not call AddParsedSubObject for design-time. How do I get my child controls to display properly in the asp.net designer? Thanks to any who can help! Sam Fields Here is a sample of what I am trying to build in its simplest format: c# code: namespace testbed { [ParseChildren(false), PersistChildren(true)] [ToolboxData("<{0}:test runat=server></{0}:test>")] public class test : Table { private TableCell innercell = new TableCell(); public test() { this.Rows.Add(new TableRow()); this.Rows[0].Cells.Add(new TableCell()); this.Rows[0].Cells[0].Text = "Header"; this.Rows.Add(new TableRow()); this.Rows[1].Cells.Add(innercell); this.Rows.Add(new TableRow()); this.Rows[2].Cells.Add(new TableCell()); this.Rows[2].Cells[0].Text = "Footer"; } protected override void AddParsedSubObject(object obj) { innercell.Controls.Add((Control) obj); this.ChildControlsCreated = false; } } } ..aspx page: <%@ Register TagPrefix="cc" Namespace="testbed" Assembly="testbed" %> <%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" Inherits="testbed._default" %> <HTML> <HEAD> <title>default</title> </HEAD> <body> <form id="default" method="post" runat="server"> <cc:test id="content" runat="server"> MyContent <asp:Label id="mylabel" text="MyLabel" Runat="server"></asp:Label> </cc:test> </form> </body> </HTML>
More information:
If the inner content is literal, the AddParsedSubObject override is adding the "LiteralControl" at design time. It is only when the <asp:Label> is added to the inner content that the design time rendering fails. Any help would be greatly appreciated! Thanks, Sam Fields [quoted text, click to view] "Sam Fields" <sfields@state.pa.us> wrote in message news:e7dQ%23Oc5DHA.2496@TK2MSFTNGP09.phx.gbl... > I have been wrestling with this code for about 2 weeks now. My goal is to > create a table for formatting purposes. I want to standardize it as a > webcontrol. I want all of the content to persist as top-level controls so > that they are visible to the asp.net designer -- PersistChildren(true). The > code works fine for run-time, but will not call AddParsedSubObject for > design-time. How do I get my child controls to display properly in the > asp.net designer? > > Thanks to any who can help! > Sam Fields > > > Here is a sample of what I am trying to build in its simplest format: > > c# code: > namespace testbed > { > [ParseChildren(false), PersistChildren(true)] > [ToolboxData("<{0}:test runat=server></{0}:test>")] > public class test : Table > { > private TableCell innercell = new TableCell(); > public test() > { > this.Rows.Add(new TableRow()); > this.Rows[0].Cells.Add(new TableCell()); > this.Rows[0].Cells[0].Text = "Header"; > > this.Rows.Add(new TableRow()); > this.Rows[1].Cells.Add(innercell); > > this.Rows.Add(new TableRow()); > this.Rows[2].Cells.Add(new TableCell()); > this.Rows[2].Cells[0].Text = "Footer"; > } > > protected override void AddParsedSubObject(object obj) > { > innercell.Controls.Add((Control) obj); > this.ChildControlsCreated = false; > } > } > } > > .aspx page: > <%@ Register TagPrefix="cc" Namespace="testbed" Assembly="testbed" %> > <%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" > Inherits="testbed._default" %> > <HTML> > <HEAD> > <title>default</title> > </HEAD> > <body> > <form id="default" method="post" runat="server"> > <cc:test id="content" runat="server"> > MyContent > <asp:Label id="mylabel" text="MyLabel" Runat="server"></asp:Label> > </cc:test> > </form> > </body> > </HTML> > >
Sam..
I'm afraid you are never going to achieve design time rendering of children controls persisted with [ParseChildren(false)] [PersistChildren(true)]. First of - AddParsedSubObject method runs only at run-time. ControlBuilder's are the ones executed at parse time - they generate a tree similar to control tree but containing instances of ControlBuilders. Nevertheless I would recommend to implement ITemplate interface and TemplatedControlDesigner for control. Regards Radek [quoted text, click to view] "Sam Fields" <sfields@state.pa.us> wrote in message news:Om5N9Fd5DHA.2432@TK2MSFTNGP10.phx.gbl... > More information: > If the inner content is literal, the AddParsedSubObject override is adding > the "LiteralControl" at design time. It is only when the <asp:Label> is > added to the inner content that the design time rendering fails. > > Any help would be greatly appreciated! > Thanks, Sam Fields > > "Sam Fields" <sfields@state.pa.us> wrote in message > news:e7dQ%23Oc5DHA.2496@TK2MSFTNGP09.phx.gbl... > > I have been wrestling with this code for about 2 weeks now. My goal is to > > create a table for formatting purposes. I want to standardize it as a > > webcontrol. I want all of the content to persist as top-level controls so > > that they are visible to the asp.net designer -- PersistChildren(true). > The > > code works fine for run-time, but will not call AddParsedSubObject for > > design-time. How do I get my child controls to display properly in the > > asp.net designer? > > > > Thanks to any who can help! > > Sam Fields > > > > > > Here is a sample of what I am trying to build in its simplest format: > > > > c# code: > > namespace testbed > > { > > [ParseChildren(false), PersistChildren(true)] > > [ToolboxData("<{0}:test runat=server></{0}:test>")] > > public class test : Table > > { > > private TableCell innercell = new TableCell(); > > public test() > > { > > this.Rows.Add(new TableRow()); > > this.Rows[0].Cells.Add(new TableCell()); > > this.Rows[0].Cells[0].Text = "Header"; > > > > this.Rows.Add(new TableRow()); > > this.Rows[1].Cells.Add(innercell); > > > > this.Rows.Add(new TableRow()); > > this.Rows[2].Cells.Add(new TableCell()); > > this.Rows[2].Cells[0].Text = "Footer"; > > } > > > > protected override void AddParsedSubObject(object obj) > > { > > innercell.Controls.Add((Control) obj); > > this.ChildControlsCreated = false; > > } > > } > > } > > > > .aspx page: > > <%@ Register TagPrefix="cc" Namespace="testbed" Assembly="testbed" %> > > <%@ Page language="c#" Codebehind="default.aspx.cs" > AutoEventWireup="false" > > Inherits="testbed._default" %> > > <HTML> > > <HEAD> > > <title>default</title> > > </HEAD> > > <body> > > <form id="default" method="post" runat="server"> > > <cc:test id="content" runat="server"> > > MyContent > > <asp:Label id="mylabel" text="MyLabel" Runat="server"></asp:Label> > > </cc:test> > > </form> > > </body> > > </HTML> > > > > > >
I will give that a try. It doesn't make sense, though, that a
LiteralControl is added to the inner cell at design time if the literal is the only contained information. Why, then, does this happen if AddParsedSubObject is a run-time only call? Thanks for your response! Sam [quoted text, click to view] "RadekP" <radek@aldec.com> wrote in message news:%23wOlT8e5DHA.632@TK2MSFTNGP12.phx.gbl... > Sam.. > > I'm afraid you are never going to achieve design time rendering of children > controls persisted with [ParseChildren(false)] [PersistChildren(true)]. > First of - AddParsedSubObject method runs only at run-time. ControlBuilder's > are the ones executed at parse time - they generate a tree similar to > control tree but containing instances of ControlBuilders. Nevertheless I > would recommend to implement ITemplate interface and > TemplatedControlDesigner for control. > > Regards > > Radek > > "Sam Fields" <sfields@state.pa.us> wrote in message > news:Om5N9Fd5DHA.2432@TK2MSFTNGP10.phx.gbl... > > More information: > > If the inner content is literal, the AddParsedSubObject override is adding > > the "LiteralControl" at design time. It is only when the <asp:Label> is > > added to the inner content that the design time rendering fails. > > > > Any help would be greatly appreciated! > > Thanks, Sam Fields > > > > "Sam Fields" <sfields@state.pa.us> wrote in message > > news:e7dQ%23Oc5DHA.2496@TK2MSFTNGP09.phx.gbl... > > > I have been wrestling with this code for about 2 weeks now. My goal is > to > > > create a table for formatting purposes. I want to standardize it as a > > > webcontrol. I want all of the content to persist as top-level controls > so > > > that they are visible to the asp.net designer -- PersistChildren(true). > > The > > > code works fine for run-time, but will not call AddParsedSubObject for > > > design-time. How do I get my child controls to display properly in the > > > asp.net designer? > > > > > > Thanks to any who can help! > > > Sam Fields > > > > > > > > > Here is a sample of what I am trying to build in its simplest format: > > > > > > c# code: > > > namespace testbed > > > { > > > [ParseChildren(false), PersistChildren(true)] > > > [ToolboxData("<{0}:test runat=server></{0}:test>")] > > > public class test : Table > > > { > > > private TableCell innercell = new TableCell(); > > > public test() > > > { > > > this.Rows.Add(new TableRow()); > > > this.Rows[0].Cells.Add(new TableCell()); > > > this.Rows[0].Cells[0].Text = "Header"; > > > > > > this.Rows.Add(new TableRow()); > > > this.Rows[1].Cells.Add(innercell); > > > > > > this.Rows.Add(new TableRow()); > > > this.Rows[2].Cells.Add(new TableCell()); > > > this.Rows[2].Cells[0].Text = "Footer"; > > > } > > > > > > protected override void AddParsedSubObject(object obj) > > > { > > > innercell.Controls.Add((Control) obj); > > > this.ChildControlsCreated = false; > > > } > > > } > > > } > > > > > > .aspx page: > > > <%@ Register TagPrefix="cc" Namespace="testbed" Assembly="testbed" %> > > > <%@ Page language="c#" Codebehind="default.aspx.cs" > > AutoEventWireup="false" > > > Inherits="testbed._default" %> > > > <HTML> > > > <HEAD> > > > <title>default</title> > > > </HEAD> > > > <body> > > > <form id="default" method="post" runat="server"> > > > <cc:test id="content" runat="server"> > > > MyContent > > > <asp:Label id="mylabel" text="MyLabel" Runat="server"></asp:Label> > > > </cc:test> > > > </form> > > > </body> > > > </HTML> > > > > > > > > > > > >
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