Cannot implicitly convert type 'string' to 'System.Threading.Tasks.Task' in c#

Question

I have this code

    private void button1_Click(object sender, EventArgs e)
    {
        //===========> Getting error here <==================//
        textBox2.Text = CallFunc(textBox1.Text);
    }

    static async Task<string> CallFunc(string str)
    {
        Program p = new Program();
        string s = await p.DocumentToText(str);
        return s;
    }


public async Task<string> DocumentToText(string path)
    {
        string txt = String.Empty;
        AmazonTextractClient client = new AmazonTextractClient(key, Skey, reg);
        //some AWS functionality

        Thread.Sleep(2000);
        txt = "hello world";
        return txt;
     }

I changed this button1_Click function to

    private void button1_Click(object sender, EventArgs e)
    {
        var d = await CallFunc(textBox1.Text);
        textBox2.Text = d.Results();
    }

as was recommended by one answers of this question

Cannot implicitly convert type 'string' to 'System.Threading.Tasks.Task<string>'

but that still does not work

Do not use Thread.Sleep in an async method. Use await Task.Delay instead. — Clemens, Dec 25 '21 at 13:06

Meysam Asadi · Accepted Answer · 2021-12-25T05:27:52.973

6

Add async in button1_Click event

private async void button1_Click(object sender, EventArgs e)
{
    var d = await CallFunc(textBox1.Text);
    textBox2.Text = d;
}

edited Dec 25 '21 at 05:27

answered Dec 25 '21 at 04:49

Meysam Asadi

6,438
3
7
17

1

error : string does not contain definition from "Result" – asmgx Dec 25 '21 at 05:19
Use textBox2.Text = d; – Meysam Asadi Dec 25 '21 at 05:28

score 1 · Answer 2 · answered Dec 25 '21 at 04:53

1

Use Async Task in button1_Click method

private async Task button1_Click(object sender, EventArgs e)
{
    var d = await CallFunc(textBox1.Text);
    textBox2.Text = d.Results();
}

answered Dec 25 '21 at 04:53

Abdus Salam Azad

5,087
46
35

Cannot implicitly convert type 'string' to 'System.Threading.Tasks.Task' in c#

2 Answers2