C#

private void checkForChange()
{
    Rectangle r = new Rectangle(0, 0, bounds.Width, bounds.Height);

    BitmapData dataContent = content.LockBits(r, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
    BitmapData dataLast = lastContent.LockBits(r, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

    int stride = dataContent.Stride;
    int offset = stride - dataContent.Width * 3;
    int width  = dataContent.Width * 3;
    int height = dataContent.Height;

    unsafe
    {
        byte* pContent = (byte*)dataContent.Scan0;
        byte* pLast = (byte*)dataLast.Scan0;

        for (int y = 0; y < height; ++y, pContent += offset, pLast += offset)
            for (int x = 0; x < width; x += 3, pContent += 3, pLast += 3)
                if (pContent[0] != pLast[0] || pContent[1] != pLast[1] || pContent[2] != pLast[2])
                    goto Found;
    }

Cleanup:
    content.UnlockBits(dataContent);
    lastContent.UnlockBits(dataLast);

    return;

Found:
    userCallBack(this);
    goto Cleanup;
}

peshawarcoder wrote:

How can i edit a listviewsubedit in ListView control in C#

Jesal Rana wrote:

I want to know the method or any help to change the fonts of website to the different fonts

Rizwan Rathore wrote:

want to know about the RegularExpression class of C#

• IsMatch - Checks if a string, or part of the string specified in the parameters matches the regular expression provided in the constructor.
• Match - Returns a match object which contains the first match that the class found matching the regular expression.
• Matches - Returns a collection of Match objects for each regular expression matched correctly.

// Must include: System.Text.RegularExpressions namespace

string urls = "there is a url included somewhere in this string : http://www.codeproject.com/script/comments/forums.asp?msg=1524600&forumid=1649#xx1524600xx and here is another url http://regexlib.com/Search.aspx?k=uri";
string urlRegex = @"(?<url>(mailto\:|(news|(ht|f)tp(s?))\://){1}\S+)";

Regex regex = new Regex(urlRegex);

foreach (Match m in regex.Matches(urls))
{
    Console.WriteLine(m.Groups["url"].Value);
}
Console.ReadLine();

An unhandled exception of type 'System.ArgumentException' occurred in system.dll

Additional information: parsing "(?<url>(mailto\(news|(ht|f)tp(s?))\://){1}\S+)" - Too many )'s.

at this instruction 

string urlRegex = @"(?<url>(mailto\(news|(ht|f)tp(s?))\://){1}\S+)";

(?<url>(mailto\:|(news|(ht|f)tp(s?))\://){1}\S+)<br />

Rizwan Rathore wrote:

so plzz reply back soon

Rizwan Rathore wrote:

looking forward for help

champ_vicks wrote:

im not able to select n deselect checkbxes in gridview like the mailing list in our mail sites