How to change value in textbox

Question

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Here is my code

C#

public void sum1()
        {
            try
            {
                string CD;

                int sum = 0;
                for (int i = 0; i < dataGridView1.Rows.Count; i++)
                {

                    CD = dataGridView1[1, i].Value.ToString();

                    if (CD == "C")
                    {
                        sum += Convert.ToInt32(dataGridView1.Rows[i].Cells[2].Value);
                    }
                    else if (CD == "D")
                    {
                        sum -= Convert.ToInt32(dataGridView1.Rows[i].Cells[2].Value);
                    }
                }
                txttotalsum.Text = sum.ToString();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

Want to like that if if sum=-25300 than i want to show in text box like 25300.000cr
And if sum =25300 than i want to show in text box like 25300.00dr

Please help me thanks in advanced
Rosy

Posted 19-Jan-12 20:14pm

rosyp

Updated 19-Jan-12 20:33pm

Kim Togo

v2

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4 solutions

Solution 2

Perhaps a small change like:

C#

txttotalsum.Text = sum >= 0 ? sum.ToString() + "cr" : Math.Abs(sum).ToString() + "dr";

Posted 19-Jan-12 20:37pm

Kim Togo

Updated 19-Jan-12 22:42pm

v3

Comments

rosyp 20-Jan-12 2:42am

THANK YOU VERY MUCH BUT IS SUM IS >0 THAN IT GIVE MINUS SIGN HOW CAN REMOVE - SIGN

Kim Togo 20-Jan-12 3:09am

You can use Math.Abs(...), see updated answer.

Solution 3

C#

public void sum1()
{
    try
    {
        int sum = 0;

        foreach(Row r in dataGridView1.Rows)
        {

            string text = r.Cells[1].Text;
            string value = r.Cells[2].Text;

            if (text.Contains("C"))
            {
                sum += Convert.ToInt32(value);
            }
            else if (text.contains("D"))
            {
                sum -= Convert.ToInt32(value);
            }
        }

        string suffix = string.empty;

        if(sum>0){suffix = "cr"}
        else if(sum<0){suffix = "dr"}

        txttotalsum.Text = sum.ToString() + suffix;
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }

i suggest u using the foreach loop, is safier than the for loop.
about the zero-nonzero suffix you can decide it whith an if-cascade

in that case there are cr for positive, dr for negative and nothing for zero.

it depends on what you prefer

Posted 19-Jan-12 20:54pm

nrgjack

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Michel [mjbohn] · Accepted Answer · 2012-01-19T20:36:00

Solution 1

You have to decide how to treat sum == 0. "0cr" or "0dr".

txttotalsum.Text = (sum < 0)? sum.ToString()+"cr" : sum.ToString()+"dr";

for "0dr"

txttotalsum.Text = (sum <= 0)? sum.ToString()+"cr" : sum.ToString()+"dr";

for "0cr"

regards
Michel

Posted 19-Jan-12 20:36pm

Michel [mjbohn]

Comments

sushilkumarsingh0 20-Jan-12 2:39am

sushil singh

BillWoodruff · Accepted Answer · 2012-01-19T21:19:00

Try this:

txttotalsum.Text =
    (sum < 0) ?
        Math.Abs(sum).ToString("F3") + "cr":
        sum.ToString("F2") + "dR";

Note that the digit after the letter "F" in the ToString parameter controls the number of trailing digits. Did you really want three trailing digits in the case of a negative balance ?

Do you want to handle "zero" as a special case ? Now: a result of #0.00 is going to result in a an output of "0.00dr." Think about:

C#

txttotalsum.Text =
    (sum == 0) ?
        "0.00 (zero balance)":
    (sum < 0) ?
        Math.Abs(sum).ToString("F3") + "cr":
        sum.ToString("F2") + "dr";