Generating Text Box at runtime!!

Code:

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        int[,] aA1 = new int[3, 4];
        Random sRan = new Random();

            int i, j,jdis,xis=40;
            for (j = 0; j < 4; j++)
            {
                for (i = 0; i <3; i++)
                {
                    try
                    {
                        aA1[i, j] = sRan.Next(0, 9);

                    }
                    catch (IndexOutOfRangeException)
                    {
                        MessageBox.Show("Error!");
                    }
                }
            }


 System.Drawing.Graphics graphicsObj;

                    graphicsObj = this.CreateGraphics();

                    Font myFont = new System.Drawing.Font("Helvetica", 16, FontStyle.Italic);

                    Brush myBrush = new SolidBrush(System.Drawing.Color.Red);

                    for (jdis = 0; jdis < 4; jdis++)
                    {
                        graphicsObj.DrawString(aA1[0, jdis].ToString(), myFont, myBrush, xis, 80);
                        graphicsObj.DrawString(aA1[1, jdis].ToString(), myFont, myBrush, xis, 105);
                        graphicsObj.DrawString(aA1[2, jdis].ToString(), myFont, myBrush, xis, 130);
                        graphicsObj.DrawString(aA1[3, jdis].ToString(), myFont, myBrush, xis, 155);
                        graphicsObj.DrawString(aA1[4, jdis].ToString(), myFont, myBrush, xis, 180);
                        graphicsObj.DrawString(aA1[5, jdis].ToString(), myFont, myBrush, xis, 205);
                        graphicsObj.DrawString(aA1[6, jdis].ToString(), myFont, myBrush, xis, 230);
                        graphicsObj.DrawString(aA1[7, jdis].ToString(), myFont, myBrush, xis, 255);
                        xis += 30;
                    }

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Code:

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              1                5                  7                8
              2                4                  5                2
              3                5                  6                5
          |txtbox|          |txtbox|          |txtbox|            |txtbox|
 

I want to create some thing like this............

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This code Up here creates and assigns the value for a 8X25 matrix and displays it in the form of my application but can I generate a Textbox just below every Column at the runtime as it does after showing the runtime....and The textbox below should be recognised by the index of the column ...... Please Help me out Here.....

BTW what is wrong with this code?? because at first my program runs fine but if i close this form (not application) in which numbers are printed and again open it nothing appears .....but this is totally random because sometime if you get lucky it may again appear on the second attempt too...........