C# Discussion Boards - CodeProject

Re: Replace(@"\\", @"\") not working

dptalt11-Aug-09 4:04

dptalt

11-Aug-09 4:04

You are right, it did work. Thanks for the clarification.

how to get data from the tags of a TIFF image

gilvani11-Aug-09 3:05

gilvani

11-Aug-09 3:05

Getting the data from the tags of a TIFF image
I'm trying to make a program that opens a TIFF image and puts the data from the tags in texboxs but I do not know how to extract the data. If anyone knows how can help me.
thanks D'Oh! | :doh:

Re: how to get data from the tags of a TIFF image

Luc Pattyn11-Aug-09 3:21

Luc Pattyn

11-Aug-09 3:21

Hi,

here is some code I've been using for that purpose, it was aiming at JPEG though:

	FileStream stream=new FileStream(fileSpec, FileMode.Open, FileAccess.Read);
	//File.OpenRead(fileSpec);
	Image localImage2=Image.FromStream(stream);
#if true
	int[] piList=localImage2.PropertyIdList;
	Dictionary<int, string> propNames=new Dictionary<int,string>();
	propNames.Add(0x010E, "ImageDescription");
	propNames.Add(0x010F, "EquipMake");
	propNames.Add(0x0110, "EquipModel");
	propNames.Add(0x0112, "Orientation");
	propNames.Add(0x011A, "XResolution");
	propNames.Add(0x011B, "YResolution");
	propNames.Add(0x0132, "DateTime");
	propNames.Add(0x0128, "ResolutionUnit");
	propNames.Add(0x0131, "SoftwareUsed");
	propNames.Add(0x0201, "JPEGInterFormat");
	propNames.Add(0x0202, "JPEGInterLength");
	propNames.Add(0x0213, "YCbCrPositioning");
	propNames.Add(0x501B, "ThumbnailData");
	propNames.Add(0x502D, "ThumbnailResolutionX");
	propNames.Add(0x502E, "ThumbnailResolutionY");
	propNames.Add(0x5090, "LuminanceTable");
	propNames.Add(0x5091, "ChrominanceTable");
	propNames.Add(0x829A, "ExifExposureTime");
	propNames.Add(0x9003, "ExifDTOrig");
	propNames.Add(0x9004, "ExifDTDigitized");
	propNames.Add(0x9204, "ExifExposureBias");
	propNames.Add(0x9209, "ExifFlash");
	propNames.Add(0x927C, "ExifMakerNote");
	propNames.Add(0x9286, "ExifUserComment");
	propNames.Add(0xA002, "ExifPixXDim");
	propNames.Add(0xA003, "ExifPixYDim");
	foreach (int ID in piList) {
		//if (propNames[ID]==null) getPropertyItem(localImage2, ID, propNames);
		if (propNames.ContainsKey(ID)) getPropertyItem(localImage2, ID, propNames);
	}
#endif
	// we now create a copy, so we can close the filestream
	// MSDN says: You must keep the stream open for the lifetime of the Image object.
	// see also the article "PRB: Image File Is Locked When You Set the PictureBox
	// Image Property to a File"
	localImage=new Bitmap(localImage2);
	stream.Close();
	localImage2.Dispose();

and

protected void getPropertyItem(Image image, int ID, Dictionary<int, string> propNames) {
	string s=(string)propNames[ID];
	if (s==null) s="";
	s+=new string(' ', 20);
	s=s.Substring(0, 20);
	string name="Prop"+LP_Format.Hex4(ID)+" "+s;
	string type=null;
	try {
		PropertyItem pi=image.GetPropertyItem(ID);
		s="";
		byte[] bb=pi.Value;
		switch ((PropertyTagType)pi.Type) {
			case PropertyTagType.Byte: 
				type="(byte)";
				for (int i=0; i<bb.Length; i++) {
					byte us=bb[i];
					s+=" "+us.ToString("X2");
					if (bb.Length==1) s+="("+us.ToString()+")";
				}
				break;
			case PropertyTagType.ASCII:
				type="(ASCII)";
				s=" "+ASCIIencoding.GetString(pi.Value, 0, pi.Len-1);
				break;
			case PropertyTagType.Short:
				type="(short)";
				for (int i=0; i<bb.Length/2; i++) {
					ushort us=BitConverter.ToUInt16(bb,2*i);
					s+=" "+us.ToString("X4");
					if (bb.Length==2) s+="("+us.ToString()+")";
				}
				break;
			case PropertyTagType.Long :
				type="(long)";
				for (int i=0; i<bb.Length/4; i++) {
					ulong us=BitConverter.ToUInt32(bb,4*i);
					s+=" "+us.ToString("X8");
					if (bb.Length==4) s+="("+us.ToString()+")";
				}
				break;
			case PropertyTagType.Rational:
				type="(rational)";
				for (int i=0; i<bb.Length/8; i++) {
					uint uNominator=BitConverter.ToUInt32(bb, 8*i);
					uint uDenominator=BitConverter.ToUInt32(bb, 8*i+4);
					s+=" "+uNominator.ToString()+"/"+uDenominator.ToString();
				}
				break;
			case PropertyTagType.Undefined:
				type="(undefined)";
				for(int i=0; i<bb.Length; i++) {
					s+=" "+bb[i].ToString("X2");
				}
				break;
			case PropertyTagType.SRational:
				type="(srational)";
				for (int i=0; i<bb.Length/8; i++) {
					int uNominator=BitConverter.ToInt32(bb, 8*i);
					int uDenominator=BitConverter.ToInt32(bb, 8*i+4);
					s+=" "+uNominator.ToString()+"/"+uDenominator.ToString();
				}
				break;
		}
		if (type==null) type="?"+pi.Type+"?";
		env.log(0, name+LP_String.Extend(type, 12)+s);
	} catch (Exception exc) {
		env.log(0, "Unable to obtain "+name+"; "+exc.Message);
	}
}

Hope this helps.

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

How to apply RowFilter for a String Date

Sreedhar Kadiyala11-Aug-09 3:02

Sreedhar Kadiyala

11-Aug-09 3:02

Hi,

I'd a DataTable where I'd filled the data using SQL Statement "SELECT CONVERT(VARCHAR,DOB,105) AS DOB FROM TABLENAME".

Here the DataTable is filled with Dates by using the format "dd-MM-yyyy"

My problem is I need to apply the Filter viz., =, >, >=, <, <= on the DataTable based on the input given by the user in the same format "dd-MM-yyyy" irrespective of the datetime setting in the user system.

Can any one suggest on this.

Thanks in Advance

Sreedhar Kadiyala

Re: How to apply RowFilter for a String Date

dptalt11-Aug-09 3:49

dptalt

11-Aug-09 3:49

In your select statement include a where clause the would be a built string based on the input the user entered. For example:

"WHERE mydate < CONVERT(DATETIME, '" + "07/01/2009" + "00:00:00', 103)"

Replace 07/01/2009 with logic that would build that part of the string based on the user inputs.

Re: How to apply RowFilter for a String Date

Anjups7-Sep-09 20:40

Anjups

7-Sep-09 20:40

Hi,

Take the input from the user which would be in the form of '=, >, >=, <, <=' and the string with this try to make a filter condition and apply it to the rowFilter of the dataview.You will surely get..

Regards
Anju

DateTime.TryParseExact() problem?

Henk Meijerink11-Aug-09 2:46

Henk Meijerink

11-Aug-09 2:46

Hi,

I can't see what's wrong with this code. I am getting "1/2/2009 9:00:00 AM" displayed in the textBox when I'm expecting "1/2/2009 9:00:00 PM". Can anyone tell me what I'm doing wrong here, please?

DateTime dateTime;
DateTime.TryParseExact("1/2/2009 9:00 PM", "d/M/yyyy H:m tt", CultureInfo.InvariantCulture, DateTimeStyles.None, out dateTime);
textBox1.Text = dateTime.ToString();

I'm using VS2008 and targeting .NET 3.5 and have "en-AU" as the default Windows culture.

Thanks, Henk.

Re: DateTime.TryParseExact() problem?

stancrm11-Aug-09 2:57

stancrm

11-Aug-09 2:57

DateTime.TryParseExact("1/2/2009 9:00 PM", "g", CultureInfo.GetCultureInfo("en-US"), DateTimeStyles.None, out dateTime);

See MSDN:
http://msdn.microsoft.com/en-us/library/ms131044.aspx[^]

Re: DateTime.TryParseExact() problem?

Henk Meijerink11-Aug-09 3:45

Henk Meijerink

11-Aug-09 3:45

Thanks stancrm, I was reading up on the "g" you used and that led me to Custom Format Strings at http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx[^] where I realised I should be using h instead of H if I'm wanting to parse the AM/PM part. Thanks for assisting. Regards, Henk.

Updated:Filter for DataGridView [modified]

janadhana11-Aug-09 2:14

janadhana

11-Aug-09 2:14

Hi,
Please let me know how to add a filter for DataGridView so that the user can enter the filter condition in the corresponding column header to filter the rows that match the condition.

I am new to C#. Requirement is simillar to how it is in Mercury Quality center or TestDirector tools.

Hope the question is clear..

Thanks & Regards,
Dhana

modified on Tuesday, August 11, 2009 8:29 AM

Re: Updated:Filter for DataGridView

Sreedhar Kadiyala11-Aug-09 2:49

Sreedhar Kadiyala

11-Aug-09 2:49

Hi,

Since the DataTable source is assigned to DataGridView, you can filter the DataTable by using
DataTable.DefaultView.RowFilter="ColName=" + ColValue
It will automatically apply to the DataGridView

Sreedhar

Re: Updated:Filter for DataGridView

janadhana11-Aug-09 19:36

janadhana

11-Aug-09 19:36

Thanks very much..i am now using the simillar code for implementing the filter.

Thanks & Regards,
Dhana

Re: Updated:Filter for DataGridView

dan!sh 11-Aug-09 2:58

dan!sh

11-Aug-09 2:58

If this is a bound DataGridView, you are not allowed to add rows. Hence you will need to extend the DataGridView if you need a filter like Quality center.

A quick and dirty (and may be "not recommended") way is:
1. Provide padding the headercell.
2. Add a textbox to the DataGridView at the location right above the first row.(You will need to play with the location of the textbox)
3. Handle its TextChanged event and set the RowFilter property of the datatable you have.

A better solution IMO will be to have a button and display a modal window where in user can apply filter.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

Re: Updated:Filter for DataGridView

janadhana11-Aug-09 19:37

janadhana

11-Aug-09 19:37

Thanks very much..I have followed the steps that you have given and created it..as you said it is ugly..it seems the same to me..I am trying to make it more clean.

Thanks & Regards,
Dhana

Re: Updated:Filter for DataGridView

Henry Minute11-Aug-09 5:00

Henry Minute

11-Aug-09 5:00

Does DataGridView Filter Popup[^] help?

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: Updated:Filter for DataGridView

janadhana11-Aug-09 19:39

janadhana

11-Aug-09 19:39

I think this is wanted i actually wanted..thanks very much..I trying to incorporate this framework. Thanks very much..it has really helped me ..

Thanks & Regards,
Dhana

q in datagirdview

mohammad alnoed11-Aug-09 1:15

mohammad alnoed

11-Aug-09 1:15

Hi All,

I am having problems adding a new row to a datagridview control in my form. I have a simple form
a datagridview. When the user types in an item number at columen one , the system will populate the datagridview with the relevant data from the database.

Re: q in datagirdview

padmanabhan N11-Aug-09 1:35

padmanabhan N

11-Aug-09 1:35

how far have you tried... can you send the code ....

Padmanabhan
My Articles:
Articles[^]
My latest Article:
Word Automation[^]

Re: q in datagirdview

Arindam Sinha11-Aug-09 1:39

Arindam Sinha

11-Aug-09 1:39

mohammad alnoed wrote:
a new row to a datagridview control in my form

Try out the following code -

dataGridView1.AlloUserToAddRows = True;

Keep me posted if this resolves your problem. Smile | :)

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
Please give your feedback on this answer.

Re: q in datagirdview

Henry Minute11-Aug-09 2:12

Henry Minute

11-Aug-09 2:12

Take a look at this[^] thread. Although it is about a ComboBox in a DGV the same principle can be applied to hooking an event for a DataGridViewTextBox (or whatever you are using). All you have to do is decide which event is most appropriate for your needs.

Getting duration of audio file with c#

SubarnaMishra11-Aug-09 1:13

SubarnaMishra

11-Aug-09 1:13

Hi,

Can anyone tell , how can I get duration of audio file with c#

Re: Getting duration of audio file with c#

DaveyM6911-Aug-09 1:29

DaveyM69

11-Aug-09 1:29

This google search[^] yeilds plenty of results

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

where to find windows toolStrip icons??

reilak10-Aug-09 23:26

reilak

10-Aug-09 23:26

is there a location in the hard drive where one can find windows toolStrip icons?

Re: where to find windows toolStrip icons??

DaveyM6910-Aug-09 23:31

DaveyM69

10-Aug-09 23:31

IIRC they are in a subfolder of the common folder in the Visual Studio install. If you did a custom install, you may not have selected them so you will have to run set up and modify.

If you are running an express version, then they do not exist for you.

Re: where to find windows toolStrip icons??

reilak11-Aug-09 1:16

reilak

11-Aug-09 1:16

I'm using express ):
i'll printScreen them... thanks!

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