c# - how to load a value in textbox at program startup

Question

i managed to do somehow what i want by doing this

    private void textBox1_Enter(object sender, EventArgs e)
    {
        textBox1.Text = "a1";
    }

But i want this to happen without clicking on the textbox The way i did upper required me to click before a1 will be written there.

Answer 1

您需要在Load您的表格中执行此操作

private void YourFormName_Load(object sender, EventArgs e)
{
     string someValue="Get the value from wherever you want";
     textBox1.Text = someValue;
}

Answer 2

例如，如果您需要读取 config 的全局变量，在 appsetting

NameValueCollection appSettings = ConfigurationManager.AppSettings;
textBox1.Text = appSettings["yourkey"];