如何使用SignalR将文本框中的文本从客户端发送到集线器

Question

I'm struggling with a beginner problem. After hours asking google I didn't find the right answer (maybe there is no good explanation in German).

I created a hub. On my client I want to send a text which is filled in a textbox to my hub. But it doesn't work. i tried every tutorial from the web. anybody can help me?

here is my code:

Hub Class:

class myhub : Hub
{
    public void sendPatName (string name)
    {
        Clients.All.broadcastMessage(name);
        Console.WriteLine (name);
    }
}

Client Side code

var hubConnection = new HubConnection("http://192.168.188.33:8080");
IHubProxy PatScreenProxy = hubConnection.CreateHubProxy("myhub");

//this doesn't work
// PatScreenProxy.On<string>("boradcastMessage", (param) => this.Invoke((Action)(() => textBox2.AppendText(string.Format("{0}", param)))));

hubConnection.Start().Wait();
string PatName = this.txtbLastname.Text;
PatScreenProxy.Invoke("sendPatName", PatName);

when I try

PatScreenProxy.Invoke("sendPatName", "PatName");

I receive the string PatName at my hub.

How can I send the content of my textbox?

Answer 1

I believe you problem is related to the line:

     PatScreenProxy.Invoke("sendPatName", PatName);

Try to explicit convert it to string:

     PatScreenProxy.Invoke("sendPatName", PatName.ToString());