c# restsharp System.InvalidOperationException

Question

I am new in C# and I'm getting an error System.InvalidOperationException with my code that calls API I created with PHP. My goal is to create a loading animation before the API is being loaded and hide it after.

loading.Visible = true;
login.Enabled = false;
var Client = new RestClient("http://localhost/online-lms/login.php");
var request = new RestRequest(Method.POST);
Client.ExecuteAsync<Form1>(request, (response) => {
    loading.Width = 200;
    login.Enabled = true;
    if (response.StatusCode == System.Net.HttpStatusCode.OK) {
        JObject o = JObject.Parse(response.Content);
    }
});

Error:

System.InvalidOperationException: 'Cross-thread operation not valid: Control 'loading' accessed from a thread other than the thread it was created on.'

PS: I'm creating a Windows Form Application.

Any help with this?

Are you trying to create WPF application or windows forms application? — Thiyagu Rajendran
– Thiyagu Rajendran, Commented Mar 26, 2017 at 16:18
Its simple invoke your UIelement when you are trying to acces from different thread.. I will post an example now — Thiyagu Rajendran
– Thiyagu Rajendran, Commented Mar 26, 2017 at 16:20

Thiyagu Rajendran · Accepted Answer · 2017-03-27 06:29:04Z

1

Invoke your UIelement to avoid cross thread error.

        this.Invoke(new MethodInvoker(delegate {
            // run all your code here
        }));
        return;

answered Mar 27, 2017 at 6:29

Thiyagu Rajendran

6554 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

c# restsharp System.InvalidOperationException

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related