C#

DataSet MyDataSet = new DataSet();
Assembly ThisAssembly = Assembly.GetExecutingAssembly();
// assign a image png to button 
Stream Stream_Image = ThisAssembly.GetManifestResourceStream("MyProject.Resources.info.png");
Button_Info.Image = Image.FromStream(Stream_Image);

// assign table to DataGridView
Stream Stream_Xml = ThisAssembly.GetManifestResourceStream("MyProject.Resources.users.xml");
MyDataSet.ReadXml(Stream_Xml); // why does this work???
DataGridView_Report.DataSource = MyDataSet.Tables[0];

MyDataSet.ReadXml(Application.StartupPath + "\\...\\users.xml", XmlReadMode.ReadSchema));

        void CreateButton() 
	{ 
	 
	    List<list><button>> btns=new List<list><button>>(); 
	 
	        string[] day = new string[] { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" }; 
	        int hour = 24;
                string name;
	 
	        for (int i = 0; i < day.Length; i++) 
	        { 
	            List<button> buttons = new List<button>(); 
	            for (int j = 0; j < hour; j++) 
	            { 	                
	                Button btn = new Button(); 
	                btn.Name = GenerateButtonName(day[i],j);
                    name = btn.Name.Substring(3);              
                foreach (SettingsProperty currentProperty in Properties.Settings.Default.Properties)
                    {
                        if (currentProperty.Name == name)
                        {
                            if (currentProperty.DefaultValue.Equals("True"))
                            {
                                btn.BackColor = System.Drawing.Color.Green;
                            }
                            else
                            { 
                                btn.BackColor = System.Drawing.Color.LightGray;
                            }
                        }
                    }                                               
                    btn.Location = new System.Drawing.Point(445, 130);
                    btn.Size = new System.Drawing.Size(14, 14);
                    btn.Click += new System.EventHandler(btn_Click);
	            buttons.Add(btn);
                    tableLayoutPanel1.Controls.Add(btn, j, i); 
	            } 
	            btns.Add(buttons);    
	        }  
	} 


        private void btn_Click(object sender, EventArgs e)
        {
            string senderName;
            senderName = ((System.Windows.Forms.Button)sender).Name.Substring(3); 
   
            if (((System.Windows.Forms.Button)sender).BackColor == System.Drawing.Color.Green)
            {
                ((System.Windows.Forms.Button)sender).BackColor = System.Drawing.Color.LightGray;    
                foreach (SettingsProperty currentProperty in Properties.Settings.Default.Properties)
                {
                    if (currentProperty.Name == senderName)
                    {                              
                            currentProperty.DefaultValue = "False";
                        //TODO: Add a exit call
                    }
                }        
            }
            else
            {
                ((System.Windows.Forms.Button)sender).BackColor = System.Drawing.Color.Green;
                foreach (SettingsProperty currentProperty in Properties.Settings.Default.Properties)
                {
                    if (currentProperty.Name == senderName)
                    {
                        currentProperty.DefaultValue = "True";                        
                    }
                } 
            }          
        }
</button></button></button></list></button></list>

richtextbox1.text[position]= ' '