how to set the “|” character to last position in textBox?

Question

Hi i am little bit struct in this concept in my textbox i am using substring concept text length exceed means it select particular it works fine but my cursor move first after my substring.

Answer 1

I think this is your issue
for example:

123 | a <- invalid character, my function in the _TextChanged event remove it and the position go to:

| 123

I want:

123 |

The following code will help you to solve your problem

int textLength = yourTextBox.Text.Length;
yourTextBox.SelectionStart = textLength;
yourTextBox.SelectionLength = 0;