passing <string> to string is causing error

I have this function

    static async Task<string> ChatGPT(string token, string model, string message)
    {
        ChatGPTClient chatGPTClient = new ChatGPTClient();
        string result = await chatGPTClient.GetChatGPTResponse(token, model, message);
        return result;
    }

result is a string inside the function and passed when it called

when i debug i can read the value of result = "Hello! How can I assist you today?"

calling it from this event

    private void btnCall_Click(object sender, EventArgs e)
    {
        string token = txtToken.Text;
        string model = cmbModel.Text;
        string message = txtPrompt.Text;

        txtDisplay.text = ChatGPT(token, model, message).ToString();
    }

but the value of txtDisplay is

System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1+AsyncStateMachineBox`1[System.String,APIApp.frmChatGPT+<ChatGPT>d__1]

what am i doing wrong and how to fix it?

>Solution :

The result type of the ChatGPT method is Task<string>. If you want to assign the string result from the task then you have to await the task.

private async void btnCall_Click(object sender, EventArgs e)
{
    string token = txtToken.Text;
    string model = cmbModel.Text;
    string message = txtPrompt.Text;

    txtDisplay.text = await ChatGPT(token, model, message);
}

You can read more about async/await at the blog from Stephen Cleary.