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Your best bet with this is to google the terms which relate to this procedure, I would, but im struggling to name it - you may know better as you are dealing with it.
Once you find something that looks relevant, post links to the information you find, and im sure someone here can help you turn that into some code.
Although, you may be lucky, someone out there *might* just know this off the top of their head, the internet is a big place.
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any one have id how can make search in side pdf file ?
the pdf file upload in date base as binary .
Palestine
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I don't know whether these libraries[^] can help you, but take a look
Regards,
Polis
Can you practice what you teach?
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Am having a Treeview with many nodes each of which have their own subnodes...
I want to move and copy the selected node(if one node selected,hence its subnodes too) to another treeview...
How can i do it...
Can anyone help me in codes...
Thanx....
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Mahi.V.Ragava,
Let's assume that you have two TreeView s (treeView1 and treeView2 ) and a button (button1 ) to move TreeNode s from treeView1 to treeView2 . Then, you can have the following event handler.
private void button1_Click(object sender, System.EventArgs e)
{
if( treeView1.SelectedNode != null && treeView2.SelectedNode != null )
{
TreeNode n = treeView1.SelectedNode;
treeView1.SelectedNode.Remove();
treeView2.SelectedNode.Nodes.Add( n );
}
} When you get the reference to the selected node in the first tree, its Nodes collection already contains all subnodes. Therefore, when you add that TreeNode to the second tree, all the subnodes already exist and get put in automagically.
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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Thanx curtis for ur brief code...
But i want to transfer by dragging the source treenode and drop it in the target treeview,provided that the source node should also exist.....
cud u help me for this ,plzzz
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This answer details an extremely minimal implementation of what you want. It assumes that you have two TreeView s on your form with names treeView1 and treeView2 .
treeView1.MouseDown += new MouseEventHandler( SourceTreeMD );
treeView1.MouseUp += new MouseEventHandler( SourceTreeMU );
treeView1.MouseLeave += new EventHandler( SourceTreeML );
treeView2.DragDrop += new DragEventHandler( TargetDrop );
treeView2.DragEnter += new DragEventHandler( TargetEnter ); As implementations of the above declared event handlers, you need the following in your form class.
private void SourceTreeMD( object sender, MouseEventArgs mea )
{
draggedNode = treeView1.GetNodeAt( mea.X, mea.Y );
}
private void SourceTreeMU( object sender, MouseEventArgs mea )
{
draggedNode = null;
}
private void SourceTreeML( object sender, EventArgs ea )
{
if( draggedNode != null )
{
treeView1.DoDragDrop( draggedNode, DragDropEffects.Move );
}
}
private void TargetDrop( object sender, DragEventArgs dea )
{
Point p = treeView2.PointToClient( new Point( dea.X, dea.Y ) );
TreeNode dropTargetNode = treeView2.GetNodeAt( p );
TreeNode sourceNode = dea.Data.GetData( typeof( TreeNode ) ) as TreeNode;
if( dropTargetNode != null && sourceNode != null )
{
sourceNode.Remove();
dropTargetNode.Nodes.Add( sourceNode );
}
else if( sourceNode != null )
{
sourceNode.Remove();
treeView2.Nodes.Add( sourceNode );
}
}
private void TargetEnter( object sender, DragEventArgs dea )
{
if( dea.Data.GetDataPresent( typeof( TreeNode ) ) )
{
dea.Effect = DragDropEffects.Move;
}
}
private TreeNode draggedNode;
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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Thanx Curtis....
But if i set breakpoint in the TargetEnter and TargetDrop,when i use the mouse to drag a node from source and place it in the target,its not working...
Also,the nodes in the source neednot be removed...
How can i do this...
Plz..Help...
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When you set the breakpoint, it messes with the mouse events. Don't do it.
To not remove the nodes in the source tree, remove the line that reads something like sourceNode.Remove(). You'll have to clone the nodes, then, methinks.
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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My pleasure. Happy coding!
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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i am developing a financial system using c sharp
i have 1 master class that open all the master table required by all the form and store it in 1 static dataset that can be access from anywhere in the sytem..
but i want to change to have make it something like caching system where if the data required is not in the master class then i will get it from server..
the tricky part is that i want clear unwanted resource so i want to have to checking like if the dataset/datatable is not used in a certain timeframe let say 15 mins the i want to close the file
any idea on how implement this idea..
sample
MasterFile [Customer]
when i do invoice transaction i will open the customer if the customer is not open at the master class
and after i close the invoice screen the customer data still remain there for a cretain perriod of time.. so any form after that need to access the customer file dont have to fetch data from sql server again.. if not use in 30 mins it will closed...
thanks
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Hi everybody!!!
I need your help!!!
Is it possible to write text on row header in a DataGrid without writing a new class?
Thank you
Alessio
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How to open an excel document with c#, The excel document must open in its own window when i press a button
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Try using the Process class of the System.Diagnostic namespace.
Bikash Rai
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I have used the following code
Process.Start("EXCEL.EXE", "c:\\temp\\test.xls");
and ASP.NET starts a process, EXCEL.EXE, but the window does not open. I have tried to set the WindowStyle to maximize but stil nothing...
What to do?
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Sorry, but I am not into much of ASP.NET. I think it has got something to do with Security permissions and sruff. Why donlt you post this in the ASP.NET forum?
Bikash Rai
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Take a look here[^].
Regards,
Polis
Can you practice what you teach?
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Hello !
Actually I am using PictureBox dynamically in the code I am getting image names from Dayabase and images from a folder I want to show these images against the specific Itemo No in Datagrid and also want to raise pictureBox1_MouseMove and pictureBox1_Click events but I don't know how can i do it Dynamically so please send me some code for it in C# I will be really really thankfull to your for your first attention plz..................................
Regards,
AbuBakar
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Hi!
It is kinda quite easy to create dynamically objects and catch the events. First of all, create the object and set all properties:
// Create instance of PictureBox
System.Windows.Forms.PictureBox loPictureBox = new System.Windows.Forms.PictureBox();
// Set some properties
loPictureBox.Name = "NewPictureBox" + m_PictureBoxCount.ToString();
loPictureBox.BackColor = System.Drawing.Color.Blue;
loPictureBox.Location = new System.Drawing.Point(1, 40);
loPictureBox.Size = new System.Drawing.Size(120,40);
Add the new PictureBox to you formular:
// Add object to container
this.Controls.Add(loPictureBox);
Then link the events to functions:
// Add eventhandler to catch the events
loPictureBox.Click += new EventHandler(NewPictureBoxesClick);
loPictureBox.MouseMove += new MouseEventHandler(NewPictureBoxesMouseMove);
To catch the event, you just need to declare the functions like they should need to be declared:
private void NewPictureBoxesClick(object sender, EventArgs e)
{
// ... your code when clicked
}
private void NewPictureBoxesMouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
// ... your code when mousemove
}
Try to understand the code and not just copy it. It is really quite simple and if you need more help to understand, just let me know!
Marcel Erz
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Hello!
Thanks a lot for your quick and comprehensive answer of my question I would also like to tell you that I am developing a Desktop application not Web base application I want to show each image against each product Id in Datagrid, I studied your code throughly it is really easy but one thing i could not able to enhale which is this line
loPictureBox.Name = "NewPictureBox" + m_PictureBoxCount.ToString();
m_PictureBoxCount.ToString() it is really disturbing me,In this line I don't know how and why u used it and from where u got it " m_PictureBoxCount " please let me know about this point,
Regards,
AbuBakar
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Hello,
Does anyone have any idea that how can I store extra information in an image. such as text, as a part of image. I don't want to show the text in an image but I want to store this information in it.
Actual I have to design an application which can embed and retrieve text messages from an image.
Something like message smuggler (software) does.
Any help in this regard?
TIA
Maqsood Ahmed - MCAD.net
Kolachi Advanced Technologies
http://www.kolachi.net
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Google for steganography.
Cheers,
Vikram. "When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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HI!
You can add information in the lowest significant bits of the color at each pixel. A human eye will not be able to see those minor differences. A simple example: You have two pixel and want to use the 2 lowest significant bits at each pixel of each color.
(3-colors * 2-bit) * 2-pixel = 12-bits
In an two pixel image with three colors and a use of 2 bits of each color, you can store 12-bits, so 1.5-byte in it. But usually you have bigger size picture , so you can store more data inside. For Example: 1024 x 768 pciture
(3-colors * 2-bit) * (1024 * 768)-pixel = (6 * 786432)-bits = 4718592-bits = 589824-byte = 576kb
So, in a normal wallpaper, you can store for example 576kb of data (that could be text or binary data). But take care of compression with data loose, like jpeg.
And remember, 3 colors is just an example, because it will just work if you use 24-bit color-depth images, but it is possible for other color depths too.
Marcel Erz
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Thanks for the reply
Maqsood Ahmed - MCAD.net
Kolachi Advanced Technologies
http://www.kolachi.net
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