WPF C# Tutorial

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="Grid_Run_Dialog.Window1"
    Name="mainWindow" Loaded="onLoaded" Width="425" Height="200"/>
//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace Grid_Run_Dialog
{
  public partial class Window1 : Window
  {
    Grid grid1 = new Grid ();
    ColumnDefinition colDef1 = new ColumnDefinition();
    ColumnDefinition colDef2  = new ColumnDefinition();
    ColumnDefinition colDef3 = new ColumnDefinition();
    ColumnDefinition colDef4 = new ColumnDefinition();
    ColumnDefinition colDef5 = new ColumnDefinition();
    RowDefinition rowDef1= new RowDefinition();
    RowDefinition rowDef2= new RowDefinition();
    RowDefinition rowDef3= new RowDefinition();
    RowDefinition rowDef4= new RowDefinition();
    TextBlock txt1 = new TextBlock();
    TextBlock txt2 = new TextBlock();
    Button button1= new Button();
    Button button2= new Button();
    Button button3= new Button();
    TextBox tb1;
    Image img1 = new Image();
        void onLoaded(object sender, EventArgs e)
    {
            grid1.Background = Brushes.Gainsboro;
            grid1.HorizontalAlignment = HorizontalAlignment.Left;
            grid1.VerticalAlignment = VerticalAlignment.Top;
            grid1.ShowGridLines = true;
            grid1.Width = 425;
            grid1.Height = 165;
            colDef1.Width = new GridLength(1, GridUnitType.Auto);
            colDef2.Width = new GridLength(1, GridUnitType.Star);
            colDef3.Width = new GridLength(1, GridUnitType.Star);
            colDef4.Width = new GridLength(1, GridUnitType.Star);
            colDef5.Width = new GridLength(1, GridUnitType.Star);
            grid1.ColumnDefinitions.Add(colDef1);
            grid1.ColumnDefinitions.Add(colDef2);
            grid1.ColumnDefinitions.Add(colDef3);
            grid1.ColumnDefinitions.Add(colDef4);
            grid1.ColumnDefinitions.Add(colDef5);
            rowDef1.Height = new GridLength(1, GridUnitType.Auto);
            rowDef2.Height = new GridLength(1, GridUnitType.Auto);
            rowDef3.Height = new GridLength(1, GridUnitType.Star);
            rowDef4.Height = new GridLength(1, GridUnitType.Auto);
            grid1.RowDefinitions.Add(rowDef1);
            grid1.RowDefinitions.Add(rowDef2);
            grid1.RowDefinitions.Add(rowDef3);
            grid1.RowDefinitions.Add(rowDef4);
            img1.Source = new System.Windows.Media.Imaging.BitmapImage(new Uri("fil:///c:/image.png", UriKind.Relative));
            Grid.SetRow(img1, 0);
            Grid.SetColumn(img1, 0);
            txt1.Text = "Text";
            txt1.TextWrapping = TextWrapping.Wrap;
            Grid.SetColumnSpan(txt1, 4);
            Grid.SetRow(txt1, 0);
            Grid.SetColumn(txt1, 1);
            txt2.Text = "Open:";
            Grid.SetRow(txt2, 1);
            Grid.SetColumn(txt2, 0);
            
            Grid.SetRow(tb1, 1);
            Grid.SetColumn(tb1, 1);
            Grid.SetColumnSpan(tb1, 5);
            
            button1.Content = "OK";
            button2.Content = "Cancel";
            button3.Content = "Browse ...";
            Grid.SetRow(button1, 3);
            Grid.SetColumn(button1, 2);
            button1.Margin = new Thickness(10, 0, 10, 15);
            button2.Margin = new Thickness(10, 0, 10, 15);
            button3.Margin = new Thickness(10, 0, 10, 15);
            Grid.SetRow(button2, 3);
            Grid.SetColumn(button2, 3);
            Grid.SetRow(button3, 3);
            Grid.SetColumn(button3, 4);
            
            grid1.Children.Add(img1);
            grid1.Children.Add(txt1);
            grid1.Children.Add(txt2);
            grid1.Children.Add(tb1);
            grid1.Children.Add(button1);
            grid1.Children.Add(button2);
            grid1.Children.Add(button3);
            
            mainWindow.Content = grid1;
        }
    }
}