Allows The User To Drag And Drop A Xls File Onto The Form And A DataGridView Fills With The Xls Sheet Data?
Mar 25, 2010
I have a VB .NET (VS 2008) application which allows the user to drag and drop a xls file onto the form and a DataGridView fills with the xls sheet data. The user than can apply changes to the data or add entries. Data integrity is checked during the load into the DataGridView (duplicates are removed and invalid entries are filtered out). After doing all this the user can click a button and the data is uploaded to a SQL server (2008) DB. I have a primary key set up (row number) and I have a compound key in the SQL table.
It is all working beautifully. Now here is my question:
I want to check for duplicate entries (between SQL server and DataGridView data) before the data is uploaded and commited to the table. What would be the most efficient way to that?
The below code msgs me the file path of a file I drag and drop onto the form. How can i restrict it to only allow .watever files to be dropped on the form. MSDN didn't do a good job explaining this.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.AllowDrop = True End Sub
Private Sub form1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles Me.DragEnter If e.Data.GetDataPresent(DataFormats.FileDrop) Then e.Effect = DragDropEffects.All End If End Sub
ListView Drag&Drop allow to Drag&Drop between form??
Public Class frmModule Private Sub ListView1_ItemDrag(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ItemDragEventArgs) Handles ListView1.ItemDrag[code]....
Can it be drap and drop item to other form control??How to write the event when mouse up at the other form control?
I'm working on a design project where I have to use a Graphical User Interface that contains a drag and drop form. It consists of having a window dropped on a wall. Both of them are images to scale. I would like to know what kind of code I would have to use to show the x and y coordinates of one of the points of my window when dragged so when I drop it, I'm dropping in it on the desired coordinate of the wall.
I am trying to generate buttons and allow the user to drag and drop them.
I have this sub:
Sub Form1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick Dim nodebtn As New Button
[Code]....
Also if I declare the nodebtn as a global variable, I do not face this problem, the button is dragable. However when I click to add new buttons, no new button is generated, instead a button is generated with the count on it.
I'm creating an application in which the form contains one datagridview and 20 pictureboxes.When the DGV is populated, the user will drag a row from DGV and drop in any one of the pictureboxes.The picturebox should able evaluate a column value(say column 1) from the dropping row and according to that it should change its picture.
Actually, Drag Drop is working as it is required but the problem i m suffering now is when i add the following code:
DataGridView1.DoDragDrop(datarow, DragDropEffects.Copy Or DragDropEffects.Move) in the mousedown event of datagridview. In datagridview, i m not able to sort the column of datagridview.
I am trying to generate buttons and allow the user to drag and drop them.I have this sub:Sub Form1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
[Code]...
Also if I declare the nodebtn as a global variable, I do not face this problem, the button is dragable. However when I click to add new buttons, no new button is generated, instead a button is generated with the count on it. Am I tackling this problem of drag and drop in the right manner or am I completely wrong at this.
My users need to be able to drag and drop a DataGridView row upward or downward to a new position. Can anyone save me the trouble of re-inventing the wheel.I am using VB.NET 2008
I want to make a drag and drop into two datadrigview but i don't know how to move the row that i select in the first datagridview into the second !
I have 2 Datagridview with 4 columns and 32 rows each other. And I want to move a row of DGV1 (source) into the DVG2 (destination) and i want that the selected row of DVG1 replace the row selected in DVG2.
Here my first little code :
Code: Private clickedRow As DataGridViewRow Private Sub DataGridView1_MouseDown(ByVal Sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseDown
Private Sub TextBox1_DragDrop(ByVal sender As Object, _ ByVal e As System.Windows.Forms.DragEventArgs) Handles DataGridView1.DragDrop If e.Data.GetDataPresent(DataFormats.Text) Then
[code].....
But when mouse hover to datagridview, the mouse symbol did not change. It should have to be Copy symbol but It did not. Please tell me why and how can i resolved it.
I'm implementing drag and drop functionality between two datagridviews. This works as intended with one exception: it is possible to drag and drop within the same datagridview. This results in duplicated rows. I want to limit the functionality so that I can only drag from one datagridview to another.[code]
I am trying to implement a DnD interface where the user drags a button onto a DGV & a new row would be inserted at the drop point. My first problem is how can I have the DGV rows highlight as the cursor is dragged over them? And then I need to get the row index when the mouse button is released so that I can insert a row at that point?
is it possible to link a personal created class with a Mouse Event? I created a class and I want to make it possible to make it interactive with the mouse. So when the user goes over the GDI-created shape (which is declared and created in that class), he has to see some information about that shape, like the name etc.... And the user has to be able to drag and drop that shape.
I have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
I have implemented couple of websites) drag and drop functionality between two Datagridviews (i.e to be able to add/remove columns on the fly). After much playing, I have managed to make this work, however it now presents a new issue - I cannot resize the columns.Below is the code for this, but I can't see how I would need to change to accomodate the resize (the drag and drop effects dont have it as an option, so I assume I need to stop the dodragdrop when the resize is taking place, but I'm not sure how to do this.
I am trying to develop a scheduler for my workplace for which I am using a datagridview. The data displayed in the datagridview is bound to a SQL server database.
I need to be able to drag and drop rows so that the any job with a high priority and a nearer deadline can just be dragged from anywhere in the grid and dropped to the topmost point in the grid. I don't mind using two buttons (up and down) to do it either. But I am not able to figure out a way to do it.
is there anyway to implement the drag and drop function for users to reorder the column sequence? i have tried several ways but it still not working, any hints can enlighten me? bottom is part of my code.
DataGridView1.AllowUserToOrderColumns = True DataGridView1.SelectionMode = DataGridViewSelectionMode.FullColumnSelect Private Sub DataGridView2_DragOver(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles
I am trying to drag & drop rows from datagridview1 to datagridview2 using the code below.My question is : how do I check for duplicates in the target datagridview before completing the drop.ie: If Jerry has already been drag dropped to datagridview2 then say, "Jerry is already in the list. Are you sure you want to add a duplicate ?"
Public Class frmDataGrid ' Some Properties that I have set for the Grid ' SelectionMode = FullRowSelect [For both the Grids] ' AllowDrop = True [For Grid DataGridView2]
I have good model (I think!) for how to allow a user to drag an element in a stackpanel and reposition it to another location within the stackpanel. However, my Stackpanel is placed within a ScrollViewer, like this (generalized):
I'm writing an application for seat reservations. I use a DataGridView to represent seats. Each free seat is coloured in green and occupied seats are in blue.DataGridView is populated with names from database and user could add a name to a seat choosing from a list.Moreover the user has the possibility to move a name from one seat to another - not occupied via drag and drop operation.Eveything works well, but when moving a name from one cell to another I have to position the cursor over a cell that is one row above and four columns on the left of that one I choose.Which is the reason? Here is the code
For Each DGR As DataGridViewRow In dgvJobs.SelectedRows ' Added to stop error occuring when destination dgv columns do not exist If dgvProject.ColumnCount = 0 Then For Each ColumnHeader As DataGridViewColumn In dgvJobs.Columns Dim name As String = ColumnHeader.Name [Code] .....
I'm making a form where I have two datagridviews. The first dgv is databound to a database. The second dgv is not databound. I want to allow users to drag rows from dgv1 and drop them on dgv2. At the moment I have managed to get it to the point where I can drag from dgv1 to dgv2 but the result is an empty row being added. When I try adding a row without using .Clone I get this error "Row provided already belongs to a DataGridView control."
I am putting together two programs... basically one to enter data into a sql server 2000 database, and one to view the entered data and modify some fields. The data-entry part works well, but the second part is giving me some problems.ince the second part should really be a simple program, I created a DataGridView of my sql server table via drag&drop (just pulled the table from the data sources). Now I need to save back any changes to the DB. The part giving me problems is the OleDBCommandBuilder:
cBuilder = New OleDbCommandBuilder(FteuStoerungsmeldungAuftragTableAdapter)
I have this app that gets the files/subdirectories from a selected one (it stores the files with their icon in a listview), I was wondering how could I drag a selected file from the listview into another directory (outside of the form), let's say the desktop.
How can I do this? I have only found examples of how to do drag/drop within the same form.
I am currently working on a drag and drop project and I was wondering if there is a way to drag picturebox1 and drop it in picturebox2; that will snap to a specific location in the picturebox2?
the following code allows me to drag and drop the data, so i can reorder the list box. However, is there are way of seeing the line across the list box where it will be moved to?
I have installed a fresh copy of VS 2008 after formating my PC, ealier i used VS 2005 for ASP. However, when open new web project and tried to drag and drop server controls to the form but i couldn't. When i click the control and drag it to the form it shows a black stop sign on my mouse cursor.... How do i fix this?
What I want to do is click a button (button will relate to a specific drawing / image) and have it appear on the cursor. I need to then 'Drop it' onto a form. Then I may need to select another button (button will relate to another specific drawing / image) and have it appear on the cursor, click on or near to the previous image and have the new image place itself against the existing on. I may choose to use drag and drop instead as the initial 'get image' command.
What I am trying to produce is an assembly building package where you can drag and drop various options onto the screen to build up a full assembly of a unit. My question is what would be the best 'work area' for this? Picture Box? or another type. I need to set the screen layout and then I can start looking at the code required for the controls.
