C# form numeric up down

Question

I want to use TextChanged in C# form to bind numeric up down but when I try it the calculated sum from this field is lower by 1 than it should be (the value is late by 1).

private void tbSoucet3_TextChanged_1(object sender, EventArgs e) {
    Soucet();
    SoucetKratTrackbar();
}  

Answer 1

[Solved] I must use text changed. It didn't work because I forgot to change left side of command to TextChanged from ValueChanged in designer.