Datagridview Does Not Respond To Mouse Event After Data Update?
May 4, 2012
I have a datagridview which is populated from a database. I have added buttons to this to edit, view, delete. For some reason using the edit button and updating the database my grid fails to respond. I have it set up to display an image based on the row I click on. Before the update this works, after is does not. After the update I run a reload() where I clear out the dataset and repopulate the datagridview. Here is the code I am using for the reload and the update.
Public Sub reloadDG()
'reloadDG is used to clean out the information currently in the datagridview and is replaced with
'current data
'calls refreshForm()
[code]....
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Jun 27, 2012
I have some code in a label's mousemove event that allows it to be dragged around my form while the left button is held down. While this is happening none of the other controls on the form respond to their own mousemove events as the mouse pointer passes over them. Is it possible to make more than one control respond to mousemove events at the same time?
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Apr 22, 2011
Objective to clear the datagrid view after updating. This should happen when the user clicks the OK button when the update is confirmed. Below is what i have.I currently have
Private Sub SaveToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripMenuItem.Click
'This updates datsource
Try
[code]....
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Mar 10, 2011
I have a class, BaseSample, that uses another class, MainData, as one of its fields:
Protected _sampleData As MainData
Public Property SampleData() As MainData
Get
[code]....
MainData in turn has a collection of a class, ProcessData, as a field and ProcessData has a collection of a class, Measurement, as a field. I.e.:
MainData
|- IEnumerable (Of ProcessData)
|- IEnumerable (Of Measurement)
These classes are entities in a LINQ to SQL file. In the Measurement class, I raise the PropertyChanged event when the CrucibleOxidizedMass property changes:
Private Sub OnCrucibleOxidizedMassChanged()
RaiseEvent PropertyChanged(Me, New ComponentModel.PropertyChangedEventArgs("CrucibleOxidizedMass"))
End Sub
In the BaseSample class, I want to respond to the CrucibleOxidizedMass PropertyChanged event in any of the descendent Measurment instances. How would I do this?
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Apr 17, 2010
I have a very simple application where I have 16 pictureboxes which are created at run time. I would like the user to click one and for me to know which one is clicked.
Unfortunately, I have no idea how to go about doing this in VB.NET. I am only just getting into the whole object orientated thing and this is something which is causing me to get stuck.
The code I am using in my picturebox array class is below as I thought it would be easier than me trying to explain what I am trying to do with it.
Public Class PictureArray
Inherits System.Collections.CollectionBase
Private ReadOnly HostForm As System.Windows.Forms.Form
[Code]....
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Apr 15, 2012
I have two custom action listers. One that handles Mouse.Click and one that handles Mouse.MouseDown. My question to you is, can I delay the mouse down event so that it does not intefere with the code of the Mouse.Click event? I have tried adding a timer and waiting x amount then setting a bool value to true, but the code executes to fast and it skips the other code.
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Mar 15, 2010
I have a datagrid, Records_tablesDataGridView. when i enter values into it's two columns and hit enter i want to update a label text to show how many records are in the records_table.I assumed that i would find an event in the datagridview properties that i would be able to use. so far no luck.
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Feb 1, 2009
I am new to VB.NET, Now i'm working with Events in VB.NET, I have two event methods, Mouse Click and Mouse Down for a single button in a form, I have displyed a message in each of these methods but only mouse down event is triggered. Why Mouse Click is not triggered? Similiarly I Did the same for Mouse Enter and Mouse Move for a particular button, in this case both the events are triggered.
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Mar 27, 2011
I have two questions in my mind!
1) What's the difference in mouse hover and mouse enter event in regard of vb.net?
2) Is embedding a resource in application more efficient or linking it on compile time?
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Jun 19, 2012
In my VB.Net forms application, I have a function:
Private Sub pnlMain_MouseLeave(sender As Object, e As System.EventArgs) Handles pnlMain.MouseLeave
...
[code].....
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Aug 24, 2011
I have set the controls mouse enter and mouse leave events. My problem is that the mouse leave event fires if I mouse over any of the child controls (like the name box for example).What I need is for the mouse leave event to fire when my mouse leaves the entire control, rather than firing when I mouse over any of the child controls. Here are the events as I have them so far:
Private Sub DeliveryControl_MouseEnter(sender As System.Object, e As System.EventArgs) Handles MyBase.MouseEnter
Me.removeImage.Visible = True
End Sub
[code]....
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Nov 27, 2009
I am writing some software that should respond to commands from a port.
How do I set up a handler to respond when data is recieved at that port.
Do I need to do anything special, like respond or set up the port in the first place.
I don't have any experience doing anything like this!
CheersGuy Joseph - Intel Quad Q9450, 4Gb Ram, 3x500GB Hard Drives, NVidia 8800GT, Marian Marc 8, VB Express 2008
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Apr 30, 2009
i want to update data in database using datagridview actually i am displaying the data in datagridview and after that i want to update some rows data directly modifying the displayed data into the datagridview
how can be done like this
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Jan 30, 2012
i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time. Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
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Feb 9, 2010
My datagridview is displaying records from table in database.When I go to add a new record the 'pencil' icon does not appear so when I click on save button update to database table does not take place.code behind save button is
BindingContext(TheatreBindingSource).EndCurrentEdit()
PatientTableAdapter.Update(TheatreDataSet)
PatientTableAdapter.Connection.Close()
i have spent all day trying to sort this ...any ideas and yes my theatrebindsource.allownew is set to true
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Jan 30, 2012
i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time.
Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ds = New DataSet[code]...
how to i can have both functions"update,filter" at the same time by using what method?
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Jul 28, 2009
I have this
[Code]...
which is supposed to get all the data from my table and set it as the datasource of a DataGridView. You can see where I put in two msgbox's to view how many columns are in the DGV before and after the "update". The first count gives me 22, which is the correct number. After the .DataSource and .DataMember lines are ran, the count jumps to 41 and I have no clue why. All I want to do is clear a dataset, fill it with the new data and set it as the data source of a datagridview. It appears the info is being saved to the table correctly too.
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Sep 22, 2009
How to update data in a table bound to a datagridview? Using Visual Basic 8.
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Jun 22, 2010
How to Insert, Delete and Update Data in a Datagridview using MySql as the database? There is a textboxes and button that adds data in the database and i want it to be refresh the datagridview.
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Aug 11, 2009
I have built a dataview where i display data information from tables which was created in MySQL. Can i update the datagrid cells by just clicking it and entering new information ? By updating the datagrid cells, will it automatically the relevant database tables ? If yes, how do i go about writing codes. All the cells now just consist of text format data.
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Jul 23, 2010
my chart loads data from a datagridview. how can i automatically update my chart with new data if new values are inserted into the datagridview.
[Code]...
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Jan 30, 2011
All I want is to update the selected row data in form1 to another form2
Form1 Objects
Form1 = MainAppForm
DataGridView = DGVMain <= binded
Button = btnUpdate
Form2 Objects
Form2 = frmUpdate
Button = btnSubmit
15 textBoxes = you can see its name in the code below and all of them are data binded
MainAppForm Code
Pass the selectedrow data to form2 (frmUpdate)
Private Sub btnUpdateDouble_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
If DGVMain.SelectedRows.Count = 1 Then
Try
frmUpdate.ItemIDTextBox.Text = DGVMain.CurrentRow.Cells(0).Value.ToString()
frmUpdate.PartTypeTextBox.Text = DGVMain.CurrentRow.Cells(1).Value.ToString()
frmUpdate.PartNameValueTextBox.Text = DGVMain.CurrentRow.Cells(2).Value.ToString()
frmUpdate.PackageTypeTextBox.Text = DGVMain.CurrentRow.Cells(3).Value.ToString()
frmUpdate.QuantityTextBox.Text = DGVMain.CurrentRow.Cells(4).Value.ToString()
frmUpdate.UnitTextBox.Text = DGVMain.CurrentRow.Cells(5).Value.ToString()
frmUpdate.DescriptionTextBox.Text = DGVMain.CurrentRow.Cells(6).Value.ToString()
frmUpdate.LocationTextBox.Text = DGVMain.CurrentRow.Cells(7).Value.ToString()
frmUpdate.ProjectBoardTextBox.Text = DGVMain.CurrentRow.Cells(8).Value.ToString()
frmUpdate.CommentsTextBox.Text = DGVMain.CurrentRow.Cells(9).Value.ToString()
frmUpdate.OrderCodeTextBox.Text = DGVMain.CurrentRow.Cells(10).Value.ToString()
frmUpdate.CurrencyTextBox.Text = DGVMain.CurrentRow.Cells(11).Value.ToString()
frmUpdate.UnitPriceTextBox.Text = DGVMain.CurrentRow.Cells(12).Value.ToString()
frmUpdate.SupplierTextBox.Text = DGVMain.CurrentRow.Cells(13).Value.ToString()
frmUpdate.ManufacturerTextBox.Text = DGVMain.CurrentRow.Cells(14).Value.ToString()
frmUpdate.Show()
Catch ex As Exception
System.Windows.Forms.MessageBox.Show(ex.Message)
End Try
ElseIf DGVMain.SelectedRows.Count = 0 Then
MsgBox("Please select one item to update!", MsgBoxStyle.Information, "Update")
Else
MsgBox("Updating multiple Items is not allowed!", MsgBoxStyle.Information, "Update")
End If
End Sub
Form2 Code
I want to update the data by this code, but it refresh only the data in Form1
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Me.Validate()
Me.SparePartsBindingSource.EndEdit()
Me.SparePartsTableAdapter.Update(Me.InventoryDBDataSet.SpareParts)
'Refresh
MainAppForm.SparePartsTableAdapter.Fill(MainAppForm.InventoryDBDataSet.SpareParts)
End Sub
No problem in updating the data if I put the code below in Form2 load event
Me.SparePartsTableAdapter.Fill(InventoryDBDataSet.SpareParts)
but the problem is, it will refresh all the data in the Form2, and my code in Form1 becomes useless.
Thanks in advance!
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Oct 23, 2010
I have a problem that is bugging the hell out of me..... I need to know how to update an access database from an unbound datagridview using vb.net 2008 here is my code but it dont want to work, I need the simplest way.
[Code]...
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Apr 17, 2010
I am populating a datagridview not with a datatable but with a list of instances of a class I created. The data for the instances is read from a database.
Looks like this:
Public Function GetSecurities() As System.Collections.Generic.List(Of Security)
Dim com As New SqlCommand
Dim rdr As SqlDataReader
[Code]....
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Apr 29, 2011
how can i call a treenode mouse click event from any other key down event?
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Dec 6, 2011
How should I go about getting my mouse position over multiple controls, and such. I can't use the form_mouse move event, or any other control event nor can I use them all at the same time cause that would conflict with the actual position I need for an object.
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Apr 16, 2012
If I wanted a character in a datagridviewcolumn replaced when it's typed, not when the cell is left, how could I achieve that? Is there an eventhandler tied to that?
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May 17, 2009
currently i had a program which working fine when its running in the solution explorer,but after published,problem comes.my datagridview cant show updated data while my database access already update...my datagridview only show existed data.could it be my datagrid problem?i get my data programmatically or is my INSERT command doesn't update the dataset?but in the solution explorer does show the dataset was updated. [code]
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Dec 31, 2010
I created a control that has picture box control docked within it. This control allows me to "animate" the image by swapping them out by setting the interval to swap them at. I want to use this control kind of like an animated icon within a application, but because the picture box is docked, the control I created won't respond to the events, MouseHover specifically. [Code]
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May 25, 2010
I have been on a database project for a while now. I wanted to be able to make changes to my database using the update command of a Datagridview control.However, I have been faced with a series of unsuccessful outcomes.I want to do this how do I go about it?
[Code]...
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