how to set currency value for textbox in c# Windows form

Question

During run time I want to insert some integer value on textbox it should be display like currency format

example : 1000000 is input Expect 1,000,000.00

The below code is execute failure format

example 12345678 but actually i got 85,671,234 after first four(1234)integer the cursor automatically moved to backside

The code is

txtpurchasecost.Text = string.Format("{0:#,###,###.##}", double.Parse(txtpurchasecost.Text));

Thanks in Advance

Answer 1

txtpurchasecost.Text = string.Format("{0:N2}", double.Parse(txtpurchasecost.Text));

and you may also specify the culture manually for the separators:

txtpurchasecost.Text = string.Format(
  CultureInfo.CreateSpecificCulture("en-US"), 
  "{0:N2}", 
  double.Parse(txtpurchasecost.Text));

Also you can check this article: Standard Numeric Format Strings

Answer 2

int temp = 0;

if (int.TryParse(txtpurchasecost.Text, out temp))
{
    txtpurchasecost.Text = (int.Parse(txtpurchasecost.Text)).ToString("C2");
}

try this, this will fix your issue.