Simple Web Browser in WPF

First of all take the wpf project from. <VisualStudio> File>NewProject>WPfApplication. Give it name as MyWebBrowser and OK. Now take a textbox in main window(Used to enter url) And five buttons like( GO, Back, Forward, SavePAge, Reload)

And a webbroser control.

Or paste this code inplace of your grid(indide window tag) in main window:
 

<grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="573*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="35*"/>
<RowDefinition Height="272*" />
</Grid.RowDefinitions>
<Grid Background="YellowGreen" Margin="0,0,0,6">
<TextBox Height="31" HorizontalAlignment="Left" Margin="130,6,0,0" Name="txtUrl" VerticalAlignment="Top" Width="434"
TextChanged="txtUrl_TextChanged" KeyUp="txtUrl_KeyUp" />
<Button Content="Go" Height="32" HorizontalAlignment="Left" Margin="570,6,0,0" Name="btnGo" VerticalAlignment="Top"
Width="29" Click="btnGo_Click" />
<Button Content="B" Height="31" HorizontalAlignment="Left" Margin="6,4,0,0" Name="btnBack" VerticalAlignment="Top" Width="28"
Click="btnBack_Click" FontSize="20" AllowDrop="False">

</Button>
<Button Content="F" Height="30" HorizontalAlignment="Left" Margin="38,5,0,0" Name="btnForward" VerticalAlignment="Top" Width="29" Click="btnForward_Click" FontSize="20">
</Button>
<Button Content="Re" Height="30" HorizontalAlignment="Left" Margin="73,5,0,0" Name="btnReload" VerticalAlignment="Top"
Width="51" Click="btnReload_Click" FontSize="20">
</Button>
<Button Content="Save" Height="33" HorizontalAlignment="Left" Margin="605,5,0,0" Name="button1" VerticalAlignment="Top"Width="57" Click="button1_Click" />
</Grid>
<WebBrowser HorizontalAlignment="Left" Margin="0,0,0,0" Name="webBrowser1" Grid.Row="1" Grid.Column="1" Navigated="webBrowser1_Navigated" LoadCompleted="webBrowser1_LoadCompleted" />
</grid>

AND THEN IN THE CODE BEHIND USE THIS CODE:

string error = string.Empty;

private void Window_Loaded(object sender, RoutedEventArgs e)
{
     //webBrowser1.ContextMenu = browser;
    //this.Title = "Shalini";
    webBrowser1.ObjectForScripting = true;
    error = "Don't do this";
}
private void txtUrl_TextChanged(object sender, TextChangedEventArgs e)
{
}
private void btnGo_Click(object sender, RoutedEventArgs e)
{
    try
    {
        string Url = string.Empty;
        string input = (txtUrl.Text);
        if (input.Contains("https://www.") != true && input.Contains("http://www.") != true)
        {
          Url = "http://www." + input;
        }
        else
        {
           Url = input;
        }
        //Url = txtUrl.Text;
        webBrowser1.Navigate(Url);
    }
    catch
    {
        MessageBox.Show(error);
    }
}
private void btnBack_Click(object sender, RoutedEventArgs e)
{
    try
    {
      webBrowser1.GoBack();
    }
    catch
    {
        MessageBox.Show(error);
    }
}
private void btnForward_Click(object sender, RoutedEventArgs e)
{
    try
    {
        webBrowser1.GoForward();
    }
    catch
    {
       MessageBox.Show(error);
    }
}
private void btnReload_Click(object sender, RoutedEventArgs e)
{
    try
    {
        webBrowser1.Refresh();
    }
    catch
    {
       MessageBox.Show(error);
    }
}
private void webBrowser1_Navigated(object sender, NavigationEventArgs e)
{
    try
    {
       if (txtUrl.Text != e.Uri.ToString())
       {
          txtUrl.Text = e.Uri.ToString();
       }
   }
   catch
   {
     MessageBox.Show(error);
   }
}
private void txtUrl_KeyUp(object sender, KeyEventArgs e)
{
    try
    {
       if (e.Key == Key.Enter)
       {
          btnGo_Click(sender, e);
       }
    }
    catch
    {
        MessageBox.Show(error);
    }
}
private void webBrowser1_LoadCompleted(object sender, NavigationEventArgs e)
{
}
private void button1_Click(object sender, RoutedEventArgs e)
{
    try
    {
        dynamic doc = webBrowser1.Document;
        if (doc != null)
        {
           var htmlText = doc.documentElement.InnerHtml;
           string name = htmlText;
           string input = name;
           if (name.Contains("<title>") == true)
           {
              name = GetSubstringByString("<title>", "</title>", name);
           }
           else
           {
              if (name.Contains("<TITLE>") == true)
              {
                 name = GetSubstringByString("<TITLE>", "</TITLE>", name);
              }
           }
           File.WriteAllText(@"Set the path here to save the downloaded file" + name + ".htm", htmlText);
           MessageBox.Show("File Downloaded Successfully");
      }
     else
     {
         MessageBox.Show("Not any webpage to show");
     }
}
catch
{
    MessageBox.Show(error);
}
public string GetSubstringByString(string a, string b, string c)
{
    string s = string.Empty;
    try
    {
         s=c.Substring((c.IndexOf(a) + a.Length), (c.IndexOf(b) - c.IndexOf(a) - a.Length));
    }
    catch
    {
        MessageBox.Show(error);
    }
    return s;
}