CODEWITHSUNDEEP
c#
Jonalyn Sofia
Jonalyn Sofia

Reputation: 73

c# restsharp System.InvalidOperationException

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?

Upvotes: 1

Views: 302

Answers (1)

Thiyagu Rajendran
Thiyagu Rajendran

Reputation: 663

Invoke your UIelement to avoid cross thread error. 

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

Upvotes: 1

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