Converting a program from console to windows form C#

Question

I am trying to convert a program from console to windows form but the problem is that the output is not showing on my textbox. My program is that user inputs how many number of rows.

    int n = int.Parse(textbox1.Text);
    int counter1 = 1,counter2 = 1,size = n + n -1;
       for(int i = 0;i<size;i++){
       for(int j = 0;j<size;j++){
    
    if(i<n-1){
    if(j<n-1){
    if(i == j){
        textBox2.Text =  "{0} " + counter1;
        counter1++;}
        else{
        textBox2.Text = " ";
    } }
    else{
            if(i + j == size-1){
            textBox2.Text =  "{0} " + counter2;
        counter2++;}                    
            else{
            textBox2.Text = " ";
        }
    } }
        else if(i == n- 1 && j == n-1){
        textBox2.Text =  "{0} " + counter1;
        counter1--;
        counter2--;   }
            else if(i == n-1 && j != n-1){
            textBox2.Text = " ";
            }
            else if(i > n-1){
            if(j>n-1){
                if(i == j){
                textBox2.Text = "{0} " + counter1;
                counter1--;
            }           
                else{
            textBox2.Text = " ";
        } }
        else
        {
            if(i + j == size-1){
            textBox2.Text = "{0} " + counter2;
            counter2--;
        }
            else{
            textBox2.Text = " ";
            }
        } } }
            textBox2.Text = " ";
            }

The program is to display the input x number pattern. Thanks in advance.

Answer 1

You are resetting the text of textBox2 every time. You should use the += operator instead of =. Side note: You should also use the special '\\n' character when you need a new line.