Problem running a Jeff Prosise example

Discussion in 'ASP .Net Building Controls' started by Richard Lionheart, Oct 25, 2005.

  1. Hi All,

    I'm trying to run the third example in Chap. 8 (Custom Controls) of
    Prosise's "Programming Microsoft .NET". He provided a directory Hello1
    containing two files
    - Hello1.aspx
    - Hello1.cs
    and a "bin" directory containing Hello.dll.

    I copied the Hello1 directory to www.root, renamed it
    TestCustomControl_Hello1 to and ran
    http://localhost/TestCustomControl_Hello1/Hello1.aspx in Firefox and IE
    browsers. They returned identical results error messages shown below,
    apparently indicating the browser couldn't find the assembly referenced on
    line 2. But the Hello.dll in the bin directory is indeed an assembly if
    ILDASM.exe is to be believed.

    Any ideas about what's wrong?
    --
    Thanks in Advance,
    Richard

    ================= Error Message ===================

    Description: An error occurred during the parsing of a resource required to
    service this request. Please review the following specific parse error
    details and modify your source file appropriately.

    Parser Error Message: File or assembly name HelloControl, or one of its
    dependencies, was not found.

    Source File: f:\inetpub\wwwroot\TestCustomControl_Hello1\Hello1.aspx
    Line: 1

    Assembly Load Trace: The following information can be helpful to determine
    why the assembly 'HelloControl' could not be loaded.


    === Pre-bind state information ===
    LOG: DisplayName = HelloControl
    (Partial)
    LOG: Appbase = file:///f:/inetpub/wwwroot
    LOG: Initial PrivatePath = bin
    Calling assembly : (Unknown).
    ===

    [snip]




    --------------------------------------------------------------------------------

    Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
    Version:1.1.4322.2032
     
    Richard Lionheart, Oct 25, 2005
    #1
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  2. Hi All,

    Here's more detail that may help you figure out what my problem is ... if
    you're up to it :)

    The subject example is taken from the CD accompanying Jeff Prosise's
    "Programming Microsoft .NET", specifically the directory
    Samples\Chap08\Hello1, which includes the following three files as shown
    below.

    I hope this helps in assessing the cause of my problem.

    Regards,
    Richard

    ============= Hello1.aspx =========
    <%@ Register TagPrefix="win" Namespace="Wintellect"
    Assembly="HelloControl" %>

    <html>
    <body>
    <form runat="server">
    <win:Hello RunAt="server" />
    </form>
    </body>
    </html>

    ============= Hello1.cs=========
    using System;
    using System.Web.UI;

    namespace Wintellect
    {
    public class Hello : Control
    {
    protected override void Render (HtmlTextWriter writer)
    {
    writer.Write ("Hello, world");
    }
    }
    }

    =========== bin/Hello.dll ===========
    **** M A N I F E S T ****
    ..assembly extern /*23000001*/ System.Web
    {
    .publickeytoken = (B0 3F 5F 7F 11 D5 0A 3A ) //
    ..?_....:
    .ver 1:0:3300:0
    }
    ..assembly extern /*23000002*/ mscorlib
    {
    .publickeytoken = (B7 7A 5C 56 19 34 E0 89 ) //
    ..z\V.4..
    .ver 1:0:3300:0
    }
    ..assembly /*20000001*/ HelloControl
    {
    // --- The following custom attribute is added automatically, do not
    uncomment -------
    // .custom /*0C000001:0A000001*/ instance void [mscorlib/* 23000002
    */]System.Diagnostics.DebuggableAttribute/* 01000003 */::.ctor(bool,
    //
    bool) /* 0A000001 */ = ( 01 00 00 01 00 00 )
    .hash algorithm 0x00008004
    .ver 0:0:0:0
    }
    ..module HelloControl.dll
    // MVID: {4489FE53-7F7A-4131-AC09-769E7B04B3D3}
    ..imagebase 0x00400000
    ..subsystem 0x00000003
    ..file alignment 512
    ..corflags 0x00000001
    // Image base: 0x03060000

    **** **** Wintellect | Hello | .class public auto ansi beforefieldinit****
    ..class /*02000002*/ public auto ansi beforefieldinit Hello
    extends [System.Web/* 23000001 */]System.Web.UI.Control/* 01000001 */
    {
    } // end of class Hello


    **** **** Wintellect | Hello | extends [System.Web]System.Web.UI.Control
    ****


    **** **** Wintellect | Hello | method.ctor : void() ****
    ..method /*06000002*/ public hidebysig specialname rtspecialname
    instance void .ctor() cil managed
    // SIG: 20 00 01
    {
    // Method begins at RVA 0x2068
    // Code size 7 (0x7)
    .maxstack 1
    IL_0000: /* 02 | */ ldarg.0
    IL_0001: /* 28 | (0A)000003 */ call instance void
    [System.Web/* 23000001 */]System.Web.UI.Control/* 01000001 */::.ctor() /*
    0A000003 */
    IL_0006: /* 2A | */ ret
    } // end of method Hello::.ctor


    **** **** Wintellect | Hello | method Render : void(class
    [System.Web]System.Web.UI.HtmlTextWriter ****
    ..method /*06000001*/ family hidebysig virtual
    instance void Render(class [System.Web/* 23000001
    */]System.Web.UI.HtmlTextWriter/* 01000002 */ writer) cil managed
    // SIG: 20 01 01 12 09
    {
    // Method begins at RVA 0x2050
    // Code size 12 (0xc)
    .maxstack 2
    IL_0000: /* 03 | */ ldarg.1
    IL_0001: /* 72 | (70)000001 */ ldstr "Hello, world" /*
    70000001 */
    IL_0006: /* 6F | (0A)000002 */ callvirt instance void
    [mscorlib/* 23000002 */]System.IO.TextWriter/* 01000004 */::Write(string) /*
    0A000002 */
    IL_000b: /* 2A | */ ret
    } // end of method Hello::Render
     
    Richard Lionheart, Oct 26, 2005
    #2
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