enter key press event when type username and password .

Question

i want to hit enter key press when type username and password .only one time hit enter.so how to do this. so give me suggestion.

Balakrishnan P · Answer

private void textBox1_KeyDown(object sender KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { } } For one time Enter You can Have a Flag Variable such as ISValid = true at first Enter change the value to ISValid = False. and check Condition in KeyDown Event as If(ISValid) { //Then Do Action }