[2008] DataGridView DragDrop Into New Row?
Jan 15, 2009
I am dragging and dropping values from a listview to a datagridview cell.In the datagridview I have AllowUserToAddRows = True because I want them to drag in as many items as they need.
The problem is that when I drag an item into the new row a newer row is not created below it as it would if I had typed something int he cell and left.
I tried to add a new row on the CellValueChanged event but that inserts a row above the row that I just dragged to.
Anyone know how to trigger that event after a drag and drop?
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Apr 9, 2010
I'm using the following code to reorder rows, it does work but i can't find a way to implement any indicator that shows me where the row will be droped, is it possible to do? It seems that the handler DragDrop is blocked until the mouse is released..vb.net
[Code]...
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Nov 28, 2011
I know that there is usually a DoDragDrop method that starts a drag and drop operation. And that there are events (such as DragEnter, DragOver, DragDrop, DragLeave) that can be handled on the target side.
Are there any events on the source of the dragdrop that will tell me whether the dragdrop operation was completed, or possibly cancelled?
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Mar 8, 2009
Below is a practical example of how this would be useful:A practical example would be an FTP client where a user dragdrops files to be uploaded and would naturally want to dragdrop remote files to their local folders with the intention of triggering a download of that file to the folder they dragged the listview item to.
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Aug 20, 2009
I have a number of controls (Device1, Device2, etc.) that all inherit from BaseDeviceControl. In the DragEnter event handler I am trying to test for the correct type by using the BaseDevvceControl like this....
[Code]....
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Jul 2, 2009
I'm looking for a way to click and drag an item out of a listview, and get the explorer path I dropped the file on, so I can write data to that location.
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Apr 5, 2010
i have to forms, one with a RTB on it, the other with a treeview on it.I want to be able to drag a image from the treeview over to my rich text box.Basicly like a clip art window.The treeview nodes have a short description of the image (e.g Dog) then a picture of a dog next to it. I want then to be able to drag that into my rich text box, and the picture of the dog to appear.Is there a easy way to do this?
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Mar 25, 2010
I am trying to drag and drop items from a listbox into a richtextbox? I can not get the .DragDrop event to fire? I have copied and past the code from [URL]
I can get the .DragEnter event to fire. The mousedown event fires the drag and drop, is there something for mouseup?
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Apr 23, 2012
I have a FlowPanelLayout that can contain several UserControls called DataGridViewFilterSortElement. These controls look kind of like buttons, but different. I want the user to be able to click one of the DataGridViewFilterSortElement controls and drag it to another position (index) in the FlowLayoutPanel. Is there a way to see the control physically moving as the user drags it to another position? In other words, is there a way to take a "snap shot" of the control that is being dragged (instead of a shadowed box) which would show the actual control moving as the cursor moves?
Also, as the control is being dragged I'd like to have the other controls position to shift automatically instead of waiting for the user to drop the drag to see the shifts. For example, let's say the FlowPanelLayout contains 3 controls and the user wants to drag the first control to the third controls position. So the user clicks and holds the first DataGridViewFilterSortElement, then drags over the second control, which causes the second control to shift to position 1 of 3, then the user drags over the third control, which causes the third control to shift to position 2 of 3, then the user drops the control in position 3.
Here is a short little video that shows what I want to do: Video Example
Private Sub lblDescription_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown, lblDescription.MouseDown
' if the user left clicks and holds the element begin a DragDrop action
If e.Button = Windows.Forms.MouseButtons.Left Then
Me.DoDragDrop(Me, DragDropEffects.Move)
End If
End Sub
[Code] .....
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Dec 10, 2009
I have a treeview dragdrop event written in VS2003. It works perfectly fine when the application is running on desktop, until we move the application to Citrix. So, users are now running it off from Citrix, the DragDrop event doesn't work anymore. It doesn't even have the effects of allowing dropping.
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Jul 19, 2009
When I use the code below, I can't get any (copy)effect as I drag things onto the picture box(img). Therefore, I can't dragdrop files. How can I make dragdrop event possible?
[Code]....
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Mar 10, 2009
I am new to vb.net and development in general. The basics are I have a control that accepts dragdrop, I use this control to drag files onto - based upon the text contained in a combobox the directory path is built in the dragdrop event, and I initiate System.IO.File.Copy. I then refresh my listview, which is working well and is listing files based upon the content of a directory. Here is my code for the dragenter and dragdrop subs
Private Sub pnlDataDrop_DragEnter(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles pnlDataDrop.DragEnter
If e.Data.GetDataPresent(DataFormats.FileDrop) Then
e.Effect = DragDropEffects.Copy
[Code] .....
I have added some break points so that I can see the values for targetpath and myfiles(), and all looks ok. The app is in its very early stages, so I am only testing in the development environment at the moment. So you know, the targetpath is a UNC: \myservermydirectory.
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May 6, 2008
I trying to do a drag drop from a listview in one form to another instance of the same form (same application running twice).I have it working with single items selections, but I want to make it work with multiple selections. 289508(VS.71).aspxThis works if I drag/drop onto itself (the same form), which I don't want, but I need it to work across instances.During debugging it seems the code DragDrop code just quits at the line during the drop:Dim myItems() As ListViewItem = e.Data.GetData("System.Windows.Forms.ListViewItem()")Any ideas what is wrong or how to drag/drop multiple items in a listview between apps?
here's my code:
Private Sub ListView1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles ListView1.DragDrop
[code]....
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Mar 15, 2012
In old vb6.0 it was easy to highlight the target item, where to drop those dragged rows.
Private Sub listView_OLEDragOver(Data As MSComctlLib.DataObject, Effect As Long, Button As Integer, Shift As Integer, x As Single, y As Single, State As Integer) Set listView.DropHighlight = listView.HitTest(x, y)
You can get the item to drop to in VB.NET:
Private Sub ListView_DragDrop(ByVal sender As Object, ByVal _
e As System.Windows.Forms.DragEventArgs) Handles _
ListView.DragDrop
[CODE]...
Now we got the index and item, where to drop. But then what? One possibility to do the HighLight is change the ListViews state to "LVIS_DROPHILITED" by sending Windows message "SendMessageA(lvw.Handle, LVIS_DROPHILITED, 0, 0)". But when is the right time to do that (DragEnter or DragDrop event) and what are the right parameters? Didn't succeed on that yet.
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Dec 12, 2010
I'm trying to loop through a list of files to get the path and filename. These files are dragged onto a datagrid:
[Code]...
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Mar 5, 2011
Working on a DragDrop application. I have a class object (built as an object) which has a GroupBox that is enabled for DragDrop.
In the class I have set it up so that the cursor will change when it enters the groupbox, leaves the groupbox, mouse is down within the groupbox and drag/drop is working. I also set up a label in the class object and changed the text in that label as well. Basically, the text changes in the label as expected including 'FEEDBACK' appearing when I am dragging the object BUT the cursor stays stubbornly as a pointer. This is tghe state of affairs either when I debug the class or when, after I build the class, it is run as part of the main program.
Here are the subs set up in the class.
Private Sub GroupBoxSourceMouseDown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GroupBoxSource.MouseDown
GroupBoxSource.DoDragDrop(GroupBoxSource.Text, DragDropEffects.Copy)
[Code].....
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May 25, 2010
drag and drop - Change Cursor as Feedback in DragDrop
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Jul 8, 2010
I've got a research application that is hosting a webbrowser control and I'm implementing a feature that allows the user to select text from a web page and drag it to various research note fields. The issue I have is the dragenter and dragdrop events continue after the initial drop, inserting the text multiple times. Here's the test case on my box and the result.
Select Text in Browser Drag to Text Box Drop Text What happens is after the drop event is fired and the text inserted to the drop target, when you move the mouse after dropping the text, the drag enter event is fired, followed by the dragdrop event, then another dragenter and dragdrop. So, selected text such as "Selected Text" becomes "Selected TextSelected TextSelected Text".
Note: The dragenter event is properly raised once when the mouse enters the textbox, however the mouse does not have to leave the textbox after the dragdrop event fires. i thought there was something wrong with my application so I created a simple test app, containing a Webbrowser and a multi-line text box. This test app generates the same results and the code is below. This is the first time, I've implemented
drag and drop operations and I followed the guidelines noted in this MSDN article. While I did what the article suggests, I'm thinking I need to note the event was handled somewhere.
[Code]...
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Oct 30, 2009
I am trying to make a textbox with complete support for dragdrop, however, it doesn't work.
Private MouseIsDown As Boolean = False
Private SelectionLen As Integer
Private SelectStart As Integer
[code]....
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Feb 12, 2012
Well the title pretty well describes my problem. Here is a little bit more detailed description of my problem: I am building an application with a TabControl, which I populate at execution time with TabPages. In my first version of the code, these TabPages were filled with a children ListView. The ListView was also created in code, using AddHandlers to link it to the DragEnter and DragDrop routines. Everything worked very well... Now as I need some other controls on every TabPage, instead of creating every single control in code, I have created a UserControl containing a ListView and a few Buttons, which I instantiate for every new TabPage. The problem now is that the DragDrop event is not raised anymore
[Code]...
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Aug 29, 2008
As the subject describes, once I implemented support for DragDrop - The DoubleClick event of the ListView control no longer fires.An overview of the code is as follows:
Private Sub ListView_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListView.MouseMove
[code]......
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Aug 29, 2010
I have a custom (inherited) TabControl which adds Drag/Drop functionality to it, so that one can drag the tabs around, either within the same control (to re-order them) or to and from other TabControls. I've noticed some time ago that my TabControl however was not raising its MouseClick and MouseUp events (or actually: it is not calling its OnMouseClick and OnMouseUp methods, which comes down to the same thing). I've been struggling with this problem for a long while and I finally figured out what is happening. I'm no closer to figuring out what to do about it though... The problem seems related to the drag drop functionality. I have this code in the OnMouseDown method (which is raised as usual):
[Code]...
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Apr 11, 2011
I want to have an icon / image of a folder on my form and I want it to operate just the same as a desktop shortcut to a directory does. If clicked, it opens directory, if file / folder is dropped onto it it sends those to the specified directory.I am however going to need to use something like this:[code]
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Nov 6, 2010
I have a DataGridView where Cell_Validating is being done. I have a Cancel button on my form that allows the user to exit out of the DataGridView changes. The problem is that if a cell was currently flagged as in error, I cannot exit and remove columns from the DataGridView. I get the following error: Operation did not succeed because the program cannot commit or quit a cell value change. Is there a way to cancel the validation once the focus has been removed from the DataGridView? Here is my Cell_Validating
[Code]...
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Oct 4, 2010
I am making a simple program.. i have a Form named frmmain that contained datagridview control named DataGridView1.. and another form named frminsert that contains two textbox controls named txtFname and txtLname and Button control named btinsert.. I want to pass the value from txtFname to the Datagridview column1 and the value of txtLname to the Datagridview column2 when I click the btinsert.
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Sep 2, 2010
i have this code to fill my datagrid with data from access database table
[code]...
now i want to add new row to the datagrid with value from textbox i get error that datagridview is bound how can i do this?
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Sep 3, 2010
I need to load all columns from my sql table to datagridview but i need it with a textbox. I mean SELECT * FROM Customers Where CUSTOMERID = 'TEXTBOX?' i need it like this.And i need a save button too for when i edit rows in datagridview i want to save the data to sql too.
[Code]...
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Sep 8, 2009
Is this the only way to get the last row of a DGV? Me.DataGridView1.Rows(Me.DataGridView1.Rows.Count - 1)
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Jul 21, 2010
I am a Beginner Programmer in VS.net 2008, I am trying to bind datagridview with my sql database, I am using windows App. Template, I want also to use calander control to get specific data.
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Aug 4, 2010
I've built a reporting feature in my app that uses a DATAGRIDVIEW to show the results of a stored procedure execution.I've noticed that the datagridview has some nice features - like the user can re-order columns.And I allow them to re-run the report and the "re-execution" nicely fills in the DGV - even if the columns are moved around.Problem is that I also allow them to run different reports - and that column re-ordering and other "retention" features of the DGV are bad.Should I be creating a DGV in the IDE and then cloning that somehow at runtime for each report that is run. As long as they are re-running the same report then I can re-use the DGV like I am now.But if they select a different report then I dispose of the DGV and make a new one.
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