C＃将查询字符串中的参数传递给WPF应用程序

Question

I currently have a WPF application that needs to accept a parameter from a URL like it would in ASP.NET. I have looked through previous post on SO but nothing it seems to be as clear as mud. I have already changed the section in "Publish" to for the acceptance of parameters as well. The follow is the code I am utilizing:

using System;
using System.Deployment;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using ViewImageForm;
using System.Windows.Forms.Integration;
using System.Windows.Forms;
using System.Web;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Deployment.Application;

namespace WPFHost
{
    /// <summary>
    /// Interaction logic for Page1.xaml
    /// </summary>
    public partial class Page1 : Page
    {
        private readonly Form1 mainForm = new Form1();

    public Page1()
    {
        InitializeComponent();

        //Create a Windows Forms Host to host a form
        WindowsFormsHost windowsFormsHost = new WindowsFormsHost();

        stackPanel.Width = mainForm.Width;
        stackPanel.Height = mainForm.Height;
        windowsFormsHost.Width = mainForm.Width;
        windowsFormsHost.Height = mainForm.Height;

        mainForm.TopLevel = false;

        windowsFormsHost.Child = mainForm;

        stackPanel.Children.Add(windowsFormsHost);
    }

    private void Page_Loaded(object sender, RoutedEventArgs e)
    {
        if (ApplicationDeployment.IsNetworkDeployed)
        {
        string url =
        AppDomain.CurrentDomain.SetupInformation.ActivationArguments.ActivationData[
        0];
        string queryString = (new Uri(url)).Query;
        this.textBox1.Text = queryString;
        }
    }
  }
}

Answer 1

Still not sure about what you are asking, so I'll try to answer both.

If the "url" field is the string "http:\\website.us?DKT_ID=param", you can get the string "DKT_ID=param" by using

url.Split('?')[1]

Creating a Uri object does not do anything other than parse your string into a special object, if you want to peform an HTTP Get and use data from that URL, use something like the example from MSDN :

        WebRequest request = WebRequest.Create (
          "http:\\website.us?DKT_ID=param");
        // If required by the server, set the credentials.
        request.Credentials = CredentialCache.DefaultCredentials;
        // Get the response.
        WebResponse response = request.GetResponse ();
        // Get the stream containing content returned by the server.
        Stream dataStream = response.GetResponseStream ();
        // Open the stream using a StreamReader for easy access.
        StreamReader reader = new StreamReader (dataStream);
        // Read the content.
        string responseFromServer = reader.ReadToEnd ();
        // Display the content.
        textBox1.Text = responseFromServer;
        // Clean up the streams and the response.
        reader.Close ();
        response.Close ();

Update If you want just the "param" string, and there won't be ANY other parameters in the query string, just use

url.Split('=')[1]

If there are multiple parameters, then you need to do something like

Dictionary<String,String> params;
string[] queryParams = url.Split('?')[1].Split('&');
foreach (string s in queryParams)
{
   string[] queryParameter = s.Split('=');
   params.Add(queryParameter[0], queryParameter[1]);
}

textBox1.Text = queryParams["DKT_ID"];