textbox.Text using index array in c#

Question

example:

textbox1.Text[0]="a";
textbox1.Text[1]="s";

so,the text appear in textbox1 is "as"

is there a way to do that?

Answer 1

No, strings are immutable. You can't manipulate strings like that, you need to create a new string and assign it to your Text property. You can assign it directly:

textBox1.Text="as";

Or you can use a StringBuilder:

var builder = new StringBuilder();
builder.Append("a");
builder.Append("s");
textBox1.Text = builder.ToString();

Answer 2

textbox1.Text="a";

And than, to add more characters to that string use

textbox1.Text +="s";