How can i suppressed inputs?

Question

how can we suppressed input in a textbox? in my previous work , i used this code to facilitate the suppression of the input in VB 6 KeyAscii = 0 , since the KeyAscii as an argument in Keypress Event is editable. but in VB.net a member KeyCode in System.Windows.Forms.KeyEventArgs is read only ..... can anyone help me guys! junmar

Answer 1

You'll need to call Application.DoEvents() before Thread.Sleep(), otherwise the color changes will be cached by GDI+ and won't take effect until the method ends.

Here's how I'd do it. I'm assuming that the buttons all have different colors to start with and you want them to retain their colors when they are in sorted order. You don't need to deal with the case i == 5 as it will never be called:

        public void SwapColor(Button b1, Button b2)

        {

            Color tempColor = b1.BackColor;

            b1.BackColor = b2.BackColor;

            b2.BackColor = tempColor;

        }

        public void BubbleSort(int[] array, int Size)

        {

            int temp;

            for (int pass = 1; pass < Size; pass++)

            {

                for (int i = 0; i < Size - pass; i++)

                {

                    if (array[i] > array[i + 1])

                    {

                        if (i == 0)

                        {

                            SwapColor(btn1, btn2);

                        }

                        if (i == 1)

                        {

                            SwapColor(btn2, btn3);                       

                        }

                        if (i == 2)

                        {

                            SwapColor(btn3, btn4);

                        }

                        if (i == 3)

                        {

                            SwapColor(btn4, btn5);

                        }

                        if (i == 4)

                        {

                            SwapColor(btn5, btn6);

                        }

                       

                        Application.DoEvents();

                        Thread.Sleep(1000); // 2000 is a bit long 

                        temp = array[i];

                        array[i] = array[i + 1];

                        array[i + 1] = temp;

                    }

                }

            }

            a();

        }