Re: file in c# - C# Discussion Boards

8-Dec-10 0:32

You should never store a date, a time or a datetime as a string if there are alternatives. Most databases do have some kind of date or datetime field type, so use it. A database cares about storing data, not formatting it; your app must deal with formatting data when presented to the user.

This[^] little article may tell you more about datetime type.

Smile | :)

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file in c#

maheshwari.vetri7-Dec-10 6:06

maheshwari.vetri

7-Dec-10 6:06

MessageBox.Show("Hash Password in Binary String\n" + hashBinStr + "\nLength : " + hashBinStr.Length);

i want this content displayed by this msg box to be saved in a file , given the file name and folder name

J4amieC7-Dec-10 6:13

J4amieC

7-Dec-10 6:13

maheshwari.vetri wrote:
i want this content displayed by this msg box to be saved in a file , given the file name and folder name

Thanks for sharing, now did you have a question?

Luc Pattyn7-Dec-10 6:28

7-Dec-10 6:28

I have two pieces of advice for you:

1.
I would suggest you select, buy and study an introductory book on C#. You have been asking a number of pretty elementary questions lately, reading a book would teach you much more in a shorter time. Visit a book store (if none around, look at Amazon), and get to it.

2.
Learn to help yourself, use Google and MSDN. Operations on files are most likely handled by the File class. Maybe WriteAllText() is your friend. Look them up, read about it, and try.

Smile | :)

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Dalek Dave7-Dec-10 12:28

Dalek Dave

7-Dec-10 12:28

Good advice.

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Luc Pattyn7-Dec-10 12:37

7-Dec-10 12:37

I second that.

Thumbs Up | :thumbsup:

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change the following code [modified]

Manfred Rudolf Bihy7-Dec-10 16:35

Manfred Rudolf Bihy

7-Dec-10 16:35

"And that was good advice, good advice.
Good advice costs nothing, and it's worth the price.
I sincerely doubt
That the world could do without
My good advice."

Alan Sherman

maheshwari.vetri7-Dec-10 5:22

maheshwari.vetri

7-Dec-10 5:22

private void btnOOImg_Click(object sender, EventArgs e)
        {
            string imgFileName;
            Bitmap img = null;
            Color c;
            int i, j;
            openFileDialog1.Filter = "All Image Files|*.bmp;*.ico;*.cur|All files (*.*)|*.*";
            openFileDialog1.FileName = null;
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                imgFileName = openFileDialog1.FileName;
                img = (Bitmap)Image.FromFile(imgFileName);
                for (i = 0; i < img.Width - 1; i++)
                {
                    for (j = 0; j < img.Height - 1; j++)
                    {
                        c = img.GetPixel(i, j);
                        imgO[i, j] = c.R;
                        // MessageBox.Show("" + imgO[i, j]);
                    }
                }
                picOriginal.Image = img;
            }
        }

this code restricts certain images. i want it to change accept all images in as a file not inside a picture box

modified on Tuesday, December 7, 2010 11:55 AM

Re: change the following code

Henry Minute7-Dec-10 5:55

Henry Minute

7-Dec-10 5:55

The formats supported by the Image class are listed here[^].

Simply change your OpenFileDialog Filter to include those you are interested in.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Re: change the following code

maheshwari.vetri7-Dec-10 6:04

maheshwari.vetri

7-Dec-10 6:04

i tried changing.i have a index error. can you give me a particular sytax

Re: change the following code

Henry Minute7-Dec-10 6:36

Henry Minute

7-Dec-10 6:36

You currently have:

openFileDialog1.Filter = "All Image Files|*.bmp;*.ico;*.cur|All files (*.*)|*.*";

To add a filter for PNG files (for example) simply add the filename template between 'cur' and the '|' before 'All Files', not forgetting to separate it by a semi-colon.

openFileDialog1.Filter = "All Image Files|*.bmp;*.ico;*.cur<sup><big>;*.png</big></sup>|All files (*.*)|*.*";

I have tried to make my additions stand out by superscripting it.

Have a go with the others yourself.

accessing child thread from the parent thread

prasadbuddhika7-Dec-10 4:50

prasadbuddhika

7-Dec-10 4:50

i have two threads in my application , the child thread holds an open socket and update a textbox in the parent thread , now i want to
send some text from the parent thread to the other end through the child socket. but i'm having the problem of accessing it , any idea about this , how to access this socket .

Re: accessing child thread from the parent thread

jschell7-Dec-10 10:13

jschell

7-Dec-10 10:13

You have a class A with data (socket)
You have another class B that you want to use with class A (call a method which sends data.)

So class B must have access to the instance of class A and it must call the method.

Nothing in the above has anything to do with threads because threads has nothing to do with it.

What does matter for threads is that you want to insure that both threads do not attempt to use the socket at the same time. A simple lock deals with that.

How to scroll ListView from your source code?

Chesnokov Yuriy7-Dec-10 2:50

Chesnokov Yuriy

7-Dec-10 2:50

I have a ListView control with LargeIcon view. Its width allows exactly only single item in a row to be displayed. Thus it may contain upto Nx1 items from two dimensional point of view.

How to automatically scroll to a given item?

Чесноков

Luc Pattyn7-Dec-10 3:26

7-Dec-10 3:26

Have a look at ListView.TopItem

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Chesnokov Yuriy7-Dec-10 19:47

Chesnokov Yuriy

7-Dec-10 19:47

It does not work with LargeIcon, SmallIcon or Tile.
My list view is in LargeIcon mode.

Чесноков

Luc Pattyn7-Dec-10 22:53

7-Dec-10 22:53

Sorry, I overlooked that. Could the EnsureVisible() method help you out?

Smile | :)

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