Programmatically Adding New Row To Bottom Of DataGridView?
Apr 9, 2009
I have a unbound datagridview for which i want to add a new row at the bottom when a user selects a value in the 2nd column of a 9 column DGV. The issue is that i have a default value (0.00) programmically entered into the last row once this 2nd column value is entered. When i call DGV.rows.add() it places the new row at teh top, but when the user enters or changes the last coulmn value then a new row is added at the bottom. I want my programmically added row to be at the bottom and have not found a way of doing this.
PS. What is the logic behind this different behavior on adding rows?
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Feb 1, 2012
I am trying to insert an initial line (0) into a datagridview (named params). The program will then read each cell in that row, pass them through a function and return values be placed into the next line (1). This will continue until one of the parameters reaches some set point. The problem that I am having is that when I try to insert a new line, it appears above the initial one and not below it like I would like it to.
Here's my code so far:
Private Sub HurricaneWinds_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim init_xrange() As Double = New Double() {0.0, 0.0, 0.0, 40.0, 0.0}
For i As Integer = 0 To 4
params(i, 0).Value = init_xrange(i)
[Code] .....
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Jul 30, 2010
1. I have a DataGridView box, that is connected to a MySQL database via the 'Data Source'. I am trying to do the datagridview1.rows.add("info here"), however i receive an error i cannot do this programmatically. I DO know the code to post to MySQL via the "insert into" la la la.However, I was curious if I can do this via the datagridview a bit..easier/simpler, such as a "datagridview1.rows.add(stuff)" sorta thing.
2. I am attempting to make a custom control, and as with ANY control, they have their.. settings. Example, a textbox, or label, has so you can set the Text. and color, etc.Others, have it (such as datagridview) have the little icon on the control itself, where you click it, and it opens a small window with settings.
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Mar 18, 2009
I have a databound datagridview.I have disabled automatically adding new rows to the grid. The datagridview is bound to a datatable.In it,I have also set the Protected Overloads Overrides Function ProcessCmdKeyto handle and process the 'Enter' keypress.When the user presses Enter within the Datagridview,I want the grid to add a new single row to the bottom of the grid.I have tried several methods to do so,but the grid always adds the new row to the top of the grid instead of to the bottom.I tried posting this issue in the Windows Forms Data Controls and DataBinding board, but didn't recieve any help there, that's why I'm posting this here instead.The only person to help me there said she couldn't reproduce my issue, even when I supplied her with the exact code I was using.I believe there is more than one way to implement this adding of a new row to a datagridview programatically, and browsing through the various msdn forums, I came across several and tried implementing them all, always with the same result.I don't remember all the various implementations I have tried, but here are my few most recent ones:(This is within a class I created that inherits the datagridview. This custom class was the only place I could specify the ProcessCmdKey function, it doesn't work in an instance of the datagridview instantiated directly onto a form. That is why I'm using the me keyword to refer to the datagridview)#1)
If keyData = Keys.Enter ThenMe.Rows.Insert(Me.RowCount(), 1)Return TrueEnd IfReturn MyBase.ProcessCmdKey(msg, keyData)
#2)If keyData = Keys.Enter ThenMe.Rows.Add()Return TrueEnd IfReturn MyBase.ProcessCmdKey(msg, keyData)#3)If keyData = Keys.Enter ThenDim row As System.Data.DataRow = dt.NewRow()dt.Rows.InsertAt(row, dt.Rows.Count)Return TrueEnd IfReturn MyBase.ProcessCmdKey(msg, keyData)
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Apr 26, 2010
how I can add a Month control to appear in the centre screen when I click a button?
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Dec 14, 2011
I'm looking for adding a control on top of others controls during runtime.
I read that the only way of playing with the Z-Order of controls is by playing with the order of the controls inside the Form.Controls Collection. I find this solution very weird and weak and I'm looking for an alternative.
Does anyone has an idea? I just want to make some kind of modal dialog that'll show below another user control to notice the user that the user control is currently doing something.
Edit: I tried using Control.BringToFront() but it doesn't work at all.
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Oct 31, 2010
I am trying to add a datatable to a database. Here's what I've been trying:
Dim newDataTable As DataTable = New DataTable("Example")
VocabularyDataSet.Tables.Add(newDataTable)
SqlDataAdapter1.Fill(VocabularyDataSet.Tables("Example"))
I've tried various incarnations of Fill and Update. But the tables will not save on the database!
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Aug 21, 2009
Is there a way to loop through each constant in the ControlChars module programatically? I want to add each of the enumerated control characters to a combobox control.
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Jul 10, 2010
I'm trying to add a group of four radio buttons to a form. There are other radio buttons so I'm grouping them by placing them on a Panel. However using the below I just get the panel added to the form without the radio buttons... Am I doing something wrong here?
Dim arrRButton(3) As RadioButton
arrRButton(0) = New RadioButton
arrRButton(1) = New RadioButton
[code].....
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May 31, 2011
I have an MDI application, say name of MDI is MDIParent. From form1 I am adding new tab pages to form2. In the first tab of form2 I have generated a ListView by calling a ListViewCreate() function in Load event of form2. I am not able to generate ListView for the new tabs. I tried calling the ListViewCreate() while adding newtab. But, it is not creating listview nor throwing any error.
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Feb 2, 2009
I have been attempting to do this in so many ways. I have tried using rundll32 printui.dll, PrintUIEntry and for some reason it stops working on vista. I have no clue why. It wont even try to work with HP printers using the inf file. What is the best way to add a LPR port printer programmatically? I can create the LPR port with NO issue what so ever.
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Feb 16, 2009
I am adding a TextBox to my asp.net page programatically via a PlaceHolder Control. However when I set the TextMode value to MultiLine I get this error:System.FormatException: Input string was not in a correct format.
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Apr 22, 2009
OK - I have worded this search 40 different ways and I seem to be lost here. Every example I find seems so happy that you can easily drag and drop a datagrid and let the user fill it in -- then they stop! I know how to do everything I am asking through LINQ. That obviously won't translate here. I really should have learned ADO.NET first, then LINQ, but NOoooo... I need to know how to do the following in .NETCF (Windows Mobile 5) using a SQL CE database on the device.
Add a new record and populate some or all of the fields with data I supply. I don't need to add a record to a datagrid - sometimes the user will not even see the record. How do I add a new record -- put data into it and save it? For example: Create a new delivery record, say, and have the program store the date in one field and a number in another field. Search for a record, then update data in it. Again, using LINQ I can do this easily -- I cannot for the life of me find any examples of doing it without it.
I can find lots of examples of populating a grid of databound fields, letting the user make changes then saving it out. I don't need to do that. Say I need to search for the one record that meets a criteria (customerID=10 and orderID=1234), then when (if) that record is found, update a field in it.
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Oct 7, 2011
I am trying to create a new item in a sharepoint list. Not getting any error messages but the item does not appear in the list.
Here is my code:
'Declare and initialize Lists Web service.
Dim listService As New Lists()
'Authenticate
[Code].....
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Dec 10, 2009
I'm trying to use a split button from a tool strip to add and remove selected items in a listview.Users click the button to add the selected item which appears in the split button drop down menu as checked.The drop down menu has three items at any one time, each with a default value of <none> - this is replaced with the text from the listview when an item is added.When users click the item from the drop down, the item is unchecked and the text returns to <none>.
The drop down should populate from the top down so if a user removes item 1 or 2, the items below would appear to be moved up with the 3rd item now showing <none>.
[Code]...
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Jun 16, 2010
A few more details. I need to programmatically (Winforms, VB.NET) check if a site is in the Allowed Sites list of the IE Pop-Up Blocker (IE 7 and 8 and Windows XP, Vista and 7) and if not, add it. The application is fully trusted and I don't want to disable the Pop-Up blocker entirely. To clarify some things, this is for a web-automation application with several users across 3 countries. I want to avoid receiving tons of emails and explaining each time how to add the website to the Allowed Sites manually. Also, some of the users have Google Toolbar installed, which also has a Popup Blocker creating trouble to my app. Can this also be done programmatically?
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Sep 13, 2011
I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
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Dec 23, 2011
Have this code so that when a checkbox in a column of my datagridview is checked, then the corresponding cell in column 2 (of the same row the check box is in) will turn blue with font color white.
[code]...
I'd also like to add a line so that as well as the cell going blue, the bottom border of the cell disappears, so cellborderstyle = none.
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Apr 2, 2010
I want to add row to datagridview programmatically with this [code]...
the error i get is : Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound.
the datagrid is not data-bound. i used the same code in another form and it's working.
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Aug 8, 2011
in datagridview, how do I go to last page and last row programmatically?
I tried below, but it does not work:
Tried 1:
dgv.FirstDisplayedScrollingRowIndex = dgv.RowCount - 1;
dgv.ClearSelection();
dgv.Rows[dgv.Rows.Count - 1].Selected = true
[Code].....
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Apr 1, 2009
in datagridview, how do I go to last page and last row programmatically?I tried below, but it does not work:Tried 1:
dgv.FirstDisplayedScrollingRowIndex = dgv.RowCount - 1;
dgv.ClearSelection();
dgv.Rows[dgv.Rows.Count - 1].Selected = true
[code].....
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Sep 25, 2010
I have a DataGridView that I'm trying to populate using a For loop:
Dim serverName As String = SQLServerName + "" + Instance
Dim server As Server = New Server(serverName)
Dim Datatable1 As New DataTable
For Each database As Database In server.Databases
Dim row As DataRow = Datatable1.NewRow
[Code]...
The DGV has been designed with the designer (columns, layout etc). Using the above the DGV does not populate. I was using a ListView for this but I need images in a subitem so have switched to using a DGV.
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May 22, 2006
How can i scroll my datagridview to its last row in the underlying dataset.
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Jun 21, 2010
For my application i'm trying to generate a datagridview with a comboboxcolumn in it. This combobox I wanna fill with some data from a table in my database.I've figured out how to add items to the combobox but I can't assign a value to it. The combobox is suposed to fill with product name items, and the value should be the weight of the product, so later on i can calculate the total weight.But now it's just displaying the product name, and the value is also the product name.
Dim palletds As New DataSet
Dim palletsql As String
Dim i As Integer
palletsql = "Select * from pallets"
[code]....
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Nov 28, 2011
In vb.net2005 i want to add and delete records programatically from DataGridView using datasource from MSAccess 2007 , and database contains fields based on date/time and yes/no .for deleting rows i am using
Dim cmd As OleDbCommandBuilder
cmd = New OleDbCommandBuilder(da)
Dim dt As New DataTable
[code]....
both are working without date and yes/no fields ,but when these included then i am getting error,can i know how to add & delete when date included
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Jan 6, 2009
I have a datagridview which i getting populated by the following
Dim SQLCOMMAND As New SqlClient.SqlCommand("SELECT COMMAND")
SQLCOMMAND .Connection = New SqlClient.SqlConnection("connectionstring")
Dim dataset As New DataSet()
[code]....
now i want to programmatically add the rows to the datagrid.....bcoz i can't add an array as the error givesrogrammatically rows can't be added to the bound datagrid....
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Feb 22, 2009
I've a problem with DataGridView component when trying to set the value of the CurrentCell. What i'm trying to do is :
I've a DataGridView With values. I want to make a button in my forms and when clicking on it I want to change the selection from the current row to the next. To explain more, by clicking my Button I want to simulate the effect of a mouse click on a DataGridview.
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Aug 15, 2010
I am using Visual Basic 10/I have 2 datagridview tables. The main datagridview can be edited by the user; adding/removing rows, changing data in text/combo columns, sort, etc. 2 columns from the second datagridview are a carbon copy of 2 columns from the main datagridview. I have achieved this by binding both datagridviews to a dataset. So that when I edit the main datagridview the effects are automatically replicated in the second datagridview.
Before I bound the datagridviews to the dataset I had a fully functional system to save the content of the datagridview to a text file and read it back in. This has now stopped working with the error message 'Can't edit a bound datagridview programmatically'.
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Apr 25, 2012
If have a textbox that is used to search a datagrid when a user types into it. This seems to be working properly, as the correct row is highlighted when text is entered. However, something isn't quite triggering properly because if I try to get the selected row, using dgSchedule.CurrentCell.RowIndex, it always comes up with whatever the last row that was physically clicked on, rather than the row that is actually highlighted.[code]...
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Sep 15, 2011
at the textbox.textchanged event im looping trough the rows in a datagridview
For Each row As DataGridViewRow In grd.Rows
Dim svalue As String = row.Cells(0).Value.ToString
If Microsoft.VisualBasic.Left(svalue, txtSearch.Text.Length) = txtSearch.Text Then
[code].....
now how to scroll to the selected row ?
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