VS 2010 Perform Row Delete To Datatable Which Is A Datasource To The Grid?
May 11, 2011
I want to know how to perform row delete to datatable which is a datasource to the grid.
In details: I have a datagridview (dg) and its datasource is set to dtItem. User will select some rows in dg and press 'delete' button.
dg.DataSource = dtItem;
I will perform a loop and delete the records. Here is the code eg:
foreach (DataGridViewRow drw in dg.Rows)
{
if (drw.Selected)
[Code]....
The problem is it didn't delete correctly. If user selects row index 0 and 1 in dg and delete it, it will delete the first one correctly and then finished cuz no more row is selected in next gridviewrow.
I tried google and didn't find what I want. may be because i don't know the correct keywords I should use to search.
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May 20, 2011
I have a datagridview bound to a datatable setting its datasource property to the datatable. I would like to have a child form that contains a list of columns associated with the datatable that contains a checkbox that will allow the user to hide and show the columns ( I do not know the best control to use here) (I assume this is the easy part as All i need to do is loop through each of the datatable's columns to get the column name)
now I would like save these visible columns on some event like form_closing so that the next time the user opens the form up it will remember the settings
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The below code was written to bind the datatable to the grid, but i am unable to fill the grid.I am unable to fill the datagrid. [code]
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I am trying to make a program that can swap row to row or column to row (vice versa) contents.
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Dec 22, 2009
I wish to output an IEnumerable type (dictionary(of T) would be perfect, otherwise a datatable would be acceptable) that provides an aggregation of the data within the datatable.In SQL I would write the query as such: select groupByColumn, sum(someNumber) from myTable group by groupByColumn
In VB.NET the closest I have got to this (achieved using information here) is: dt is a datatable containing two columns, referred to by index in p below Dim q = From p In dt Group p By p(0) Into Sum(p(1)) Select p(0), SumOfNumber = Sum
However I receive error: "Range variable name can be inferred only from a simple or qualified name with no arguments." on the p(0) element. Therefore my question is as follows:How can I resolve this error? How do I process the result (q) as an IEnumerable type? Life isn't made any easier because I'm using Linq in unfamiliar vb.net. Many examples are in C#, but I haven't really come across anything suitable even in C#.
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how do you add information from another data source cell to a to another data source cell in a different form
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How do I perform an sql query onto a DataTable not a Database table?
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I have a ListView and I have set up my Delete Link button. When I clicked Delete however I get "The ListView 'ListView' raised event ItemDeleting which wasn't handled." So I decided to try and implement the DeleteLinkButton_Click() and ListView_ItemDeleted() ... however I can't figure out how to identify which row I've selected for my DeleteLinkButton_Click().
I didn't bind my source through a control instead I used the following method.
[code]...
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How to perform add, edit, delete in a dataset that will update the database as well?
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Dim cn As New SqlConnection(CreditDisputesLogConn)
Dim cmd As New SqlCommand("CustomersLookup", cn)
Dim da As New SqlDataAdapter(cmd)
[Code]....
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How can I get an item value from a Combobox using a datatable as it's datasource? Here's my code for constructing the combobox. This code works, that's why I'm not showing it all, but I want you to know how I'm creating the combobox.
Try
query = "SELECT category_id, name FROM categories ORDER BY name ASC;"
dbCommand = New MySqlCommand(query, dbConnection)
[Code]....
I want to display what is the item you physically see in the combobox that you select.
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Aug 15, 2010
I am using VB.net.
I have a gridview with a datatable datasource.
What is the best option to update the datatable when i delete a row in the gridview and then show the gridview without that row?
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Can you tell me how to syncronise the a DataSource when inserting a new row into a DataTable? [code]The user enters values in the Textboxes and clicks a save button.At that point I get a concurrency violation when using .Update to get the new row into the database.Can you tell me if I need to add any more code to synchronise everything?
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'...
Dim strSQL as String = "SELECT col1,col2,col3 FROM myTable"
'....
myda.Fill(myDtb)
myDGV.DataSource = myDtb.
'The above code fills the DGV with data from the underlying query
'of the DataTable.
'Supposing that I want to add an unbound Column to the end of the DGV which appears together with the data returned by the query, is it possibe?
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Jul 25, 2011
Dim GridDTB as Datatable[code]...
It is updating only on the table "DT3", which is last create table in the array.
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Nov 7, 2011
i need to query the datatable & set the outcome as datagridview controls datasource
vb.net
Private Sub Txt_Search_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Txt_Search.TextChanged
'routine objective:- Filter datatable & set the datagridview datasource
[code]....
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Feb 22, 2011
i have a remove button like i would like to delete just sigle selected row from both datagridview and the acutual database.the problem I am having is in deleting selected row.if i dont use the parameter the contents of the table gets deleted ,i dont have any primery key just an ID field (AutoNumber).
[code]...
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How do i delete a row from datagridview and datasource that is populated by a class file?dding of item goes like this, but not not sure how to delete the item.
Dim dt As DvdEzyDataSet.DVDCopyDataTable = DvdCopyDB.getDvdCopyByID(CInt(txtCopyID.Text))
Dim dr As DvdEzyDataSet.DVDCopyRow = dt.Rows(0)
Dim dt1 As DvdEzyDataSet.DVDDataTable = DvdDB.getDvdByID(CInt(dr.FK_dvdID))
[code].....
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I have binded a datatable to a combobox, using DataSource, DisplayMember and ValueMember properties. Now I try to set the combobox to a preset value using comboBox.SelectedValue = value. Nothing happens however.
[Code]...
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Dim curControl As Control = Me.ActiveControl
Dim ControlType As String = curControl.GetType.ToString()
If ControlType = "System.Windows.Forms.DataGridView" Then
[code].....
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FilterColumnsComboBox.DataSource = WOTable.Columns?
FilterColumnsComboBox.DisplayMember = ???
FilterColumnsComboBox.ValueMember = ???
[Code]....
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May 16, 2012
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colDelete.AllowDelete = True
colDelete.Width = "100"
AddHandler CType(gridSavedForLater, Grid).DeleteCommand, AddressOf dgDeleteSelectedIncident
and the sub is the following
[Code]...
i need to add a javascript confirm dialog when this sub is called. i can do it with a windows form messagebox but that does not work on the server.
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Mar 15, 2012
i've a problem with deleting record from datagrid. i have few columns in my datatable and all publish on to a grid and under "ID" column there are id nos and they are "NOT" unique. user able to search using this "ID" no. problem comes in deleting records since the "ID" is not unique. if i use following command to delete; it deletes all the records which are having same "ID". but i want to delete only the current row records,
sqlDelete = "DELETE * FROM table1 WHERE ID ='" & form1.dgv1.CurrentRow.Cells(0).Value.ToString & "'"
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Sep 10, 2010
I have a datagrid which has been bound to a datatable.If I sort the grig lets say by surname order I would like to export that datatable in that sorted order but whenever I do it never seems to be sorted.sorted order.
Basically what I see in the grid is how I want my exported table to be.
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