how to auto increment jpg

Hi all,

Following code is storing one image after program run that image is base one Username_and current date , now what i want whenever same user put his detail at same day at that time his existing image of name and date should be increment like 1st time name should be john_1-10-2016, same user put his detail again then image should be john_1-10-2016(1),john_1-10-2016(2) and so on

Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width,

Screen.PrimaryScreen.Bounds.Height);

Graphics graphics = Graphics.FromImage(bitmap as Image);

graphics.CopyFromScreen(0, 0, 0, 0, bitmap.Size);

var date = DateTime.Now.ToString("dd-MM-yyyy");

string format = txtname.Text += date;

bitmap.Save(@"E:\\Project backups\\Medical\\Sales_receipt\\" + format + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

Hi,

You can use below functions for that -

private static string numberPattern = " ({0})";

public static string NextAvailableFilename(string path)

{

// Short-cut if already available

if (!File.Exists(path))

return path;

// If path has extension then insert the number pattern just before the extension and return next filename

if (Path.HasExtension(path))

return GetNextFilename(path.Insert(path.LastIndexOf(Path.GetExtension(path)), numberPattern));

// Otherwise just append the pattern to the path and return next filename

return GetNextFilename(path + numberPattern);

}

private static string GetNextFilename(string pattern)

{

string tmp = string.Format(pattern, 1);

if (tmp == pattern)

throw new ArgumentException("The pattern must include an index place-holder", "pattern");

if (!File.Exists(tmp))

return tmp; // short-circuit if no matches

int min = 1, max = 2; // min is inclusive, max is exclusive/untested

while (File.Exists(string.Format(pattern, max)))

{

min = max;

max *= 2;

}

while (max != min + 1)

{

int pivot = (max + min) / 2;

if (File.Exists(string.Format(pattern, pivot)))

min = pivot;

else

max = pivot;

}

return string.Format(pattern, max);

}

Now make some changes in your code as below -

Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width,

Screen.PrimaryScreen.Bounds.Height);

Graphics graphics = Graphics.FromImage(bitmap as Image);

graphics.CopyFromScreen(0, 0, 0, 0, bitmap.Size);

var date = DateTime.Now.ToString("dd-MM-yyyy");

string format = txtname.Text += date;

string filepath = NextAvailableFilename(@"E:\\Project backups\\Medical\\Sales_receipt\\" + format + ".jpg");

bitmap.Save(filepath, System.Drawing.Imaging.ImageFormat.Jpeg);

Please refer below link for more details -

http://stackoverflow.com/questions/1078003/c-how-would-you-make-a-unique-filename-by-adding-a-number

2 Replies

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Midhun Tp10y ago
Accepted answer
Hi,
You can use below functions for that -
private static string numberPattern = " ({0})";
public static string NextAvailableFilename(string path)
{
// Short-cut if already available
if (!File.Exists(path))
return path;
// If path has extension then insert the number pattern just before the extension and return next filename
if (Path.HasExtension(path))
return GetNextFilename(path.Insert(path.LastIndexOf(Path.GetExtension(path)), numberPattern));
// Otherwise just append the pattern to the path and return next filename
return GetNextFilename(path + numberPattern);
}
private static string GetNextFilename(string pattern)
{
string tmp = string.Format(pattern, 1);
if (tmp == pattern)
throw new ArgumentException("The pattern must include an index place-holder", "pattern");
if (!File.Exists(tmp))
return tmp; // short-circuit if no matches
int min = 1, max = 2; // min is inclusive, max is exclusive/untested
while (File.Exists(string.Format(pattern, max)))
{
min = max;
max *= 2;
}
while (max != min + 1)
{
int pivot = (max + min) / 2;
if (File.Exists(string.Format(pattern, pivot)))
min = pivot;
else
max = pivot;
}
return string.Format(pattern, max);
}

Now make some changes in your code as below -
Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height);
Graphics graphics = Graphics.FromImage(bitmap as Image);
graphics.CopyFromScreen(0, 0, 0, 0, bitmap.Size);
var date = DateTime.Now.ToString("dd-MM-yyyy");
string format = txtname.Text += date;
string filepath = NextAvailableFilename(@"E:\\Project backups\\Medical\\Sales_receipt\\" + format + ".jpg");
bitmap.Save(filepath, System.Drawing.Imaging.ImageFormat.Jpeg);
Please refer below link for more details -
http://stackoverflow.com/questions/1078003/c-how-would-you-make-a-unique-filename-by-adding-a-number
0
Atul Rokade10y ago
thnx midhun brother its working absolutely fine!! thnx :)
+1