Created attachment 290254 [details]
mono Form1.exe>xxx

here attached find Form1.cs

This worked under F7.

how do I attach Form1.cs at this point?

here it is anyway:
[landon4@LMKIII c#]$ cat Form1.cs
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace calculator
{
        /// <summary>
        /// Summary description for Form1.
        /// </summary>
        public class Form1 : System.Windows.Forms.Form
        {
                private System.Windows.Forms.TextBox textBox1;
                private System.Windows.Forms.TextBox textBox2;
                private System.Windows.Forms.TextBox textBox3;
                private System.Windows.Forms.Button button1;
                /// <summary>
                /// Required designer variable.
                /// </summary>
                private System.ComponentModel.Container components = null;

                public Form1()
                {
                        //
                        // Required for Windows Form Designer support
                        //
                        InitializeComponent();

                        //
                        // TODO: Add any constructor code after
InitializeComponent call
                        //
                }

                /// <summary>
                /// Clean up any resources being used.
                /// </summary>
                protected override void Dispose( bool disposing )
                {
                        if( disposing )
                        {
                                if (components != null)
                                {
                                        components.Dispose();
                                }
                        }
                        base.Dispose( disposing );
                }

                #region Windows Form Designer generated code
                /// <summary>
                /// Required method for Designer support - do not modify
                /// the contents of this method with the code editor.
                /// </summary>
                private void InitializeComponent()
                {
                        this.textBox1 = new System.Windows.Forms.TextBox();
                        this.textBox2 = new System.Windows.Forms.TextBox();
                        this.textBox3 = new System.Windows.Forms.TextBox();
                        this.button1 = new System.Windows.Forms.Button();
                        this.SuspendLayout();
                        //
                        // textBox1
                        //
                        this.textBox1.Location = new System.Drawing.Point(88, 24);
                        this.textBox1.Name = "textBox1";
                        this.textBox1.TabIndex = 0;
                        this.textBox1.Text = "";
                        //
                        // textBox2
                        //
                        this.textBox2.Location = new System.Drawing.Point(88, 80);
                        this.textBox2.Name = "textBox2";
                        this.textBox2.TabIndex = 1;
                        this.textBox2.Text = "";
                        //
                        // textBox3
                        //
                        this.textBox3.Location = new System.Drawing.Point(88, 136);
                        this.textBox3.Name = "textBox3";
                        this.textBox3.TabIndex = 2;
                        this.textBox3.Text = "";
                        //
                        // button1
                        //
                        this.button1.Location = new System.Drawing.Point(112, 200);
                        this.button1.Name = "button1";
                        this.button1.TabIndex = 3;
                        this.button1.Text = "Add";
                        this.button1.Click += new
System.EventHandler(this.button1_Click);
                        //
                        // Form1
                        //
                        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
                        this.ClientSize = new System.Drawing.Size(292, 273);
                        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                               
                                                        this.button1,
                                                                               
                                                        this.textBox3,
                                                                               
                                                        this.textBox2,
                                                                               
                                                        this.textBox1});
                        this.Name = "Form1";
                        this.Text = "Form1";
                        this.ResumeLayout(false);

                }
                #endregion

                /// <summary>
                /// The main entry point for the application.
                /// </summary>
                [STAThread]
                static void Main()
                {
                        Application.Run(new Form1());
                }

                private void button1_Click(object sender, System.EventArgs e)
                {
                        double a1 = Convert.ToDouble(textBox1.Text);
                        double a2 = Convert.ToDouble(textBox2.Text);
                        double asum = a1 + a2;
                        textBox3.Text = asum.ToString();
                }
        }
}

Looks like the same issue as bug 380131

who handles mono preparation for mono updates?

again: the link I installed on my computer solved the compile problem

and the dialog appeared and worked with 100000 runtime errors!

I'm working on fixing this problem. Currently, libgdiplus ships with a libgdiplus.so.0 with symlinks to .so and .so.0.0 - expect something soon.

*** Bug 380131 has been marked as a duplicate of this bug. ***

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Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 8.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '8'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 8's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 8 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
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more recent Fedora release includes newer upstream software that fixes 
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The process we are following is described here: 
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

This is still an issue, as "Requires: libgdiplus-devel" is not the right thing to do. Please notice bug 380131 comment 8 and furthermore..

A change like this fixes it for me _without_ requiring libgdiplus-devel:

--- /etc/mono/config~     2008-10-25 11:14:43.000000000 +0200
+++ /etc/mono/config      2008-12-02 23:27:27.000000000 +0100
@@ -15,6 +15,7 @@
        <dllmap dll="i:msvcrt.dll" target="libc.so.6" os="!windows"/>
        <dllmap dll="sqlite" target="libsqlite.so.0" os="!windows"/>
        <dllmap dll="sqlite3" target="libsqlite3.so.0" os="!windows"/>
+       <dllmap dll="gdiplus.dll" target="libgdiplus.so.0" os="!windows">
        <dllmap dll="libX11" target="libX11.so.6" os="!windows" />
        <dllmap dll="libcairo-2.dll" target="libcairo.so.2" os="!windows"/>
        <dllmap dll="i:kernel32.dll">

Thanks - I've added that patch in and will put it into the next rawhide spin. If all goes well there, I'll get it into 2.0.1

It's now in 2.2 (updates testing) and 2.4 (rawhide). Closing the bug