My Code Is Giving Problem That "Index Was Giving Outside The Array Of The Bound" I Need Help?/

Question

1.00/5 (2 votes)

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C#

try
            {

                if (txtB_Passowrd.Text != "")
                {

                                       string str;
                                        int chunkLength = 8;
                                        str = txtB_Passowrd.Text;

                                        for (int l = 0; l < str.Length; l += chunkLength)
                                        {
                                            if (chunkLength + l > str.Length)
                                                chunkLength = str.Length - l;
                                         //        MessageBox.Show(" "+str.Substring(l, chunkLength));
                                       //       richTextBox2.Text= str.Substring(i, chunkLength);
                                            listBox1.Items.Add(str.Substring(l, chunkLength));
                                        }
                                        int r = listBox1.Items.Count;
                //    MessageBox.Show("Test"+r);
                                        int f = 0;
                                        while (f<r)
                                        {


                    viewSubKeysToolStripMenuItem1.Enabled = true;
                        f++;

                        name = BinaryConversion.GetPassword(listBox1.Items[f].ToString());
                        // txtB_Passowrd.Text = name;
                        if (f == r)
                            break;

                        txtB_64BitBinary.Text = BinaryConversion.ConvertToBinary64(name);
                        txtB_64Binary_Parity.Text = BinaryConversion.parityBitAdd(name);
                        Bit64Array = txtB_64Binary_Parity.Text;
                        Bit56Array = Permutation.Pc1(Bit64Array);
                        for (int i = 0; i < 56; i++)
                        {
                            txtB_56BitBinary.Text = txtB_56BitBinary.Text + Bit56Array[i];

                        }

                        for (int K = 0; K < 28; K++)
                        {
                            L28[K] = Bit56Array[K];
                            R28[K] = Bit56Array[K + 28];

                        }



                        int round = 1;
                        for (int i = 0; i < 16; i++)
                        {
                            if (round == 1 || round == 2 || round == 9 || round == 16)
                            {
                                L28 = Permutation.LeftShift1Bit(L28);
                                R28 = Permutation.LeftShift1Bit(R28);

                            }
                            else
                            {
                                for (int j = 0; j < 2; j++)
                                {

                                    L28 = Permutation.LeftShift1Bit(L28);
                                    R28 = Permutation.LeftShift1Bit(R28);

                                }

                            }
                            for (int j = 0; j < 28; j++)
                            {
                                Bit56Array[j] = L28[j];
                                Bit56Array[j + 28] = R28[j];

                            }
                            SecretK16Keys[i] = Permutation.Pc2(Bit56Array);
                            round++;
                        }


                    }
              }
                else
                {
                    MessageBox.Show("You Must Enter Password", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            catch (Exception obj)
            {
                MessageBox.Show(obj.Message.ToString(), "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }

Posted 14-Sep-14 23:08pm

Member 11063279

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Comments

Richard MacCutchan 15-Sep-14 5:15am

I see lots of indexed operations, it could be anywhere. You need to use your debugger and trap the error to see what values your indices have, and where the error occurs.

Member 11063279 15-Sep-14 5:17am

how can i see it?? please help me?

Richard MacCutchan 15-Sep-14 5:46am

Use your debugger like I suggested. No one else can guess what happens when your code runs with real data, or even which index is the one that causes the error.

Pheonyx 15-Sep-14 5:17am

And what debugging have you done? What line of this code dump throws your common error that indicates you are trying to access something that is beyond the bounds of an array?

Member 11063279 15-Sep-14 5:19am

whenever i execute the loop it's give the error, i tried to get the string and divided it into pieces in 8 size. but when i do it in loop it's give the error

CPallini 15-Sep-14 5:17am

At least you should report the exact error message (it locates the offending line).

Member 11063279 15-Sep-14 5:19am

i have not seen, but it's in the loop

Pheonyx 15-Sep-14 5:26am

Which loop, you have 7 loops that I can immediately see.

Member 11063279 15-Sep-14 5:32am

it's in the second loop

int r = listBox1.Items.Count;
// MessageBox.Show("Test"+r);
int f = 0;
while (f

CPallini 15-Sep-14 5:46am

You should mark the exact line in the posted code (use the 'improve question').

Subrata.In 15-Sep-14 5:51am

try this:
for (int l = 0; l < str.Length-1; l += chunkLength)
instead of:
for (int l = 0; l < str.Length; l += chunkLength)

Member 11063279 15-Sep-14 6:30am

yup it's work:)

1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Pheonyx · Accepted Answer · 2014-09-14T23:39:00

Solution 1

C#

f++;

  name = BinaryConversion.GetPassword(listBox1.Items[f].ToString());

It could be that line there,it could be a load of your other lines, but you are incrementing f before you use it. So this could be throwing your error as f becomes equal to the count value of listBox1.Items.Count, resulting in your error as it should not be allowed to increase to that value.

Posted 14-Sep-14 23:39pm

Pheonyx

Comments

Member 11063279 15-Sep-14 5:50am

but what the solution, it's necessary for it

Pheonyx 15-Sep-14 5:51am

move f++ to the end of the loop.

My Code Is Giving Problem That "Index Was Giving Outside The Array Of The Bound" I Need Help?/

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Solution 1

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My Code Is Giving Problem That "Index Was Giving Outside The Array Of The Bound" I Need Help?/

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