I want to delete rows in datagridview by clicking button. Have found on some sites code like:
[Code]...
But if CurrentCell is on new row and I click to delete row - it's deleting that row that is standing before current selected cell. It means that dgv.CurrentRow.IsNewRow is not showing is realy currentRow new or not! But why? Old VB version? I am using VB Professional 2008
I can't understand is it VB 2008 bug or I am doing something wrong.But code like:
if datagridview1.CurrentRow.IsNewRow=true then msgbox "That is new row!"
I have an inconsistency in behaviour when I try to get the CurrentRow after a row has been selected.
If I select the first row in a DataGridView object using the mouse, the DataGridView1.SelectionChanged event fires, and DataGridView1.CurrentRow is the newly selected row (Row 0).
If I select the first row via code however ie. DataGridView1.CurrentCell = DataGridView.Rows(0).Cells(0) then the DataGridView1.SelectionChanged also fires, but CurrentRow is the old row, not the new row.
In fact CurrentRow doesn't get updated until AFTER the SelectionChanged event has fired if you force the row change in the code, but is updated BEFORE SelectionChanged if you do the row change via the mouse or keyboard.
how to check if its the first row if I've moved to the first row using CurrentCell ?
I have a datagridview that is bounded to a dataset and when i select an item to the datagridview to delete, I get the correct item. But when i sorted the datagridview to some field, it return a different item. Here is my code:
DSet.Tables("sec_company_address").Rows(sec_company_address.CurrentRow.Index).Delete()
Edit: i try this line but it brings up an error.
Dim xID As String = sec_role_module.CurrentRow.Cells("nID").Value.ToString
sDataSet.Tables(sec_role_module.Name).Rows.Find(xID).Delete()
i have a bound datagrid that allows users to delete & edit records within the grid using 2 buttons. delete deletes the record from the datatable. edit takes the cell values and places them in controls outside of teh datagridview for teh user to update, they then click an update button (outside datagridview) which updates the datarow
i delete a record using the dt.Rows[e.RowIndex].Delete method so that i can use the Rowstate property to do a final update on all records the problem arises when i delete a record then go to edit a record the CurrentRow index is incorrect as it still see's the deleted record.
if i delete the first record in the grid, then go to edit the next record (which is now rowIndex 0) i get an error saying unable to update deleted row contents
i then tried to use the defaultView property of the datatable when updating the row - which will update the row on screen but when i go to do the final update it see the modified row as its original deleted rowstate.
vb.net 2005 sql 2005 developer.I've done at least 30-40 grids for my clients so i am not exactly new to this.i have an empty bound grid. bound via the drag and drop ide.I click on a button that does an addnew to the bindingsource of the grid.The new row appears filled with empty cells.I want to know how to determine what is the state of the row.
Immeadiately after the addnew, the rows.count is now 1. the value for dgv.rows(0).IsNewRow is false?At this point if i do a bindingsource.canceledit the row dissapears and all is well.If i enter a valid value for some of the rows but not for all of the rows,i hit the uparrow, something happens and the dataerror event is fired. again if i execute a bindingsource.canceledit then the row dissappears and the integrity is ok.If instead of using the up arrow, i click away to lets say cancel button, some strange things begins to happen.The dataerror routine files before the cancel button click event fires.If the row contains valid data then the dataerror event is not fired and the cancel button click event fires.So i am trying to have one button called "delete row".I want it to be able to remove the current row regardless of what state it is in.
If it is still in its add mode then a cancel edit will do. If it has been updated from the grid down to the datatable, then the same is true, a bindingsource.canceledit will work If the row has been pushed out to the sql server, then i have to remove the row in a different way.One such way is to use the datagridview's rows.removeat method.I need to distinguish between a row that is brand new and has not been edited at all from one that is new but has data in it and then the one who has been updated all the way to the server. Bindingsource.CancelEdit and DataGridView.Rows.RemoveAt([currentrow]) are my tools IsNewRow doesnt seem to work.after the bindingsource.addnew, where is the row in the binding source? the Item collection does not have it. The currencymanager.count is still zero?
DataGridViewRow.IsNewRow property is set for the bottom (empty) row. If I set a cell value in the bottom row using DataGridViewCell.Value, IsNewRow remains set. What is the correct way to programatically set a cell value in the botton row to clear IsNewRow?
View 4 RepliesI have a few classes, one is a form, the other is the source of the datagridview. I want to be able to sort the columns of the datagridview by clicking on the header. Here are the classes that I am dealing with:
Imports DiscoveryByte.AddTools.Misc_Tools
Public Class ViewDiscoveryFlashCards
Private DBBindingSource As New BindingSource
[code].....
I can edit values on the DataGridView and as long as the program is running it is there exit the program and restart the program and return to the DataGridView and all changes are gone. I know there has been a lot of posts on this subject and I have read many of them but nobody seems to be using SqlClientCE for the data base and I need instructions of how to make a table adapter say like the following do the trick.[code]...
View 1 Repliesi got problem while saved the record.here is my code.
Imports System.Data.OleDb
Imports System.Data
Imports System.Configuration
Public Class Form2
[code]....
Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
If e.ColumnIndex <> 3 Then
Exit Sub
[code]....
I am using the CellClick event to update DB column PaidStatus from Paid to Un-Paid and vice-versa....Once updated i want the updated data to be reflected..i am using DataGridView1.Refresh()....but it does not show the updated data from the DB..i have to close the application and re launch it to see the changes.
[ VB.NET 2008 ]
I'm facing new problem that MaxInputLength is not working in my code, my code is here.
I have set 12 for NQty . New Row allows only 12 chars but already existing rows are allowing more than 12.. so here maxinput lengh not working
i have set 7 for N1 Qty but it allows 7 chars for already existing and new rows because i did not assign any values to that column..
Private Sub Load_Grid()
With DataGridView1
.Columns.Clear()
[Code]....
I have the following code, what it should do it write 98 columns down and 15 columns across.but what it seems to be doing to just writing into the 1st column over and over again.
Dim TBF_IST_Min As DataTable = TBF_Dataset.Tables.Add("TBF Minutes")
' Add columns to the TBF_IST_Min table.
TBF_IST_Min.Columns.Add("0-2", GetType(Integer))
TBF_IST_Min.Columns.Add("2-3", GetType(Integer))
[code]....
I have a form with a button and a tabcontrol that has 2 tabs, on each tab I have 1 datagridview in them
both datagridviews are bound in the load event to a different bindingsource each.
When I click the button I fill the datatables programatically, and set some cells and columns on the datagridview to readonly.
The columns are set to readonly on both grids, but the cells are not. Only the cells in the first datagridview are being set to readonly and the cell on the second grid are not.
Further info:
If before clicking the button i switch to the second tabpage on the tabcontrol, and click the second grid on a column, and then go back to the first tabpage, the readonly cells are set fine when I click the button
If I press the button a second time, the readonly cells are set on both grids are set fine.
It seems to me that this error is presented on non-active (in lack of a better name) datagridviews.
I have tried, to call update, refresh, focus, endedit, etc etc on the click event of the button for the second grid but nothing seems to make it work.
I have an unbound checkbox in my datagrid view along with other bound fields from a dataset. I do not need to send back the checkbox status to my dataset or the DB. Instead I will loop though the DGV and look for those checked and do another process with them after its done being loaded. The problem is this. When I check a checkbox, then check another, the first one goes back to unchecked and so forth, back and forth. There is no add, update or deletes needed for this DGV.
[Code]...
i have a windows forms app which displays a bunch of records from my sql database. when i modify records in the grid and click on save, all changes are saved EXCEPT the changes made to the currently highlighted row. they aren't written out the database until i exit the actual program, despite clicking on my save button.so for example, if i change 5 different records in the grid, and click on save, and then click on refresh to reload the data from the database, 4 out of the 5 are saved correctly, but the row that is currently highlighted (meaning, the last row i changed) still has the old data.My code for the save button look like:
Code:
Private Sub TerritoryBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TerritoryBindingNavigatorSaveItem.Click
[code]....
I'm using vb 2005, seems sorting is not working if I change the data by code. For example, if I have a simple form with only one datagridview and one button, grid was sorted on column 1, then I press the button to randomly change data in column 2, then use column 2 to sort, the display order is not correct, but after the button click, if I click on a cell, the grid will re-sort by itself, and get the right list. I know DataGridView is not for Editing data...
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim dt As New DataTable
dt.Columns.Add("C1")
[Code] .....
Datagridview With Access - The Delete Is Not Working
View 3 RepliesDim cv As Integer
Dim cc As Integer
Dim CurrentValue As Double
Dim ObsoleteValue As Double
[code]....
Basically this code works for the first column of the DataGridView. It sort of stops iterating after the last calculation of the row is performed and doesn't change the cc value at all. Meaning the loop gets stuck after the first iteration.
I've been trying to get the update method to work on a DataGridView for the past 2 days and I just can't get it to happen!I'm using a "Save Button" to invoke the update and no errors are thrown but the table is not updated when the save button is pressed.
Private Sub Main_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
With NodesDataGridView.ColumnHeadersDefaultCellStyle
.Alignment = DataGridViewContentAlignment.MiddleCenter
[code]....
I have some code written by another developer(no, really). The datagridview has the AllowUserToResizeColumns property set to true, but at runtime the grid will not allow column resizing. I've checked the code to see if the property is being set in code and I can't find anything. Is there some other grid property that, if set to a certain value, will disable column resizing?
View 2 RepliesI am trying to update my DGV with the following code. i have generated SQL update command in the tableadapter. but still the changes are not affecting the DB.
[Code]...
I want to put the value "Da" to all the Cells of the CurrentRow where the "Cell(5).Value=SOMETHING" and the "ColumnHeaderText=SOMETHING" it's found.
For Each rand As DataGridViewRow In Me.dgv_lista_repere.Rows
For Each coloana As DataGridViewColumn In dgv_lista_repere.Columns
Try
[Code].....
I am not sure whether it is possible or not? need suggestion.I want to display filenames from 2 different folders into 2 different DataGridview controls that are placed in 2 tab pages of TabControl1. Here is the code that I have tried. By running this code, I can able to show the filenames from a folder onto DataGridView1 in Tabpage1 but not in DataGridView2 of tabpage2.
[Code]...
Private Sub dgvTransactions_CellContentClick(sender As Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvTransactions.CellContentClick
If e.ColumnIndex = 0 Then
[code]....
I've used DataAnnotations attribute DisplayName successfully using MVC model binding, and even with WPF/Silverlight model binding and of course it works just fine, but now I'm on a project that I'm forced to use VB.NET 3.5 WinForms.
I have a Linq2Sql model and I created a partial class for one of my classes and included a MetadataType attribute to point to a metadata class. I added a DisplayName attribute to a property in the metadata class. I then bind my datagridview with an IQueryable(Of mydatatype), but the column name in the grid is the Property's name and not the DisplayName.
Am I missing something? Is there something else I need to do to get the datagridview to use the DisplayName?
In my Model class:
Imports System.ComponentModel
Imports System.ComponentModel.DataAnnotations
<MetadataType(GetType(vwREVIEW_ECRMetadata))> _
[Code]....
In my application I am selecting a folder path and then asking the user if he/she wants to display full path or file names only.
My problem arises when I want to insert the results in a datagridview. The datagridview has 2 columns:
column1 ----> shows file name
column2 ----> shows file size in MB.
with the below code I get the file name and then the file size on the same column one after the other
I want to show as follows:
File Name Size (MB)
sample.txt 1.2
myspreadsheet.xls 0.6
Seanie.bmp 0.8
What do I need to modify in order to achieve this?
Code:
What is the proper way of working with percentages and DataGridView and dividing by zero..In my code I am attempting to divide two numbers, sometimes one of the numbers is zero..Then I need to add a column to my datagrid, I think i need it to be decimal? So i can sort it later. I had it as a string and everything worked fine excpet i couldnt sort properly.[code]If I change column to Double it handles it fine, then i am not sure how to read the value as a percentage?
View 12 RepliesI'm working with datagridview.I found an example on the web about creating a datagridview: firs I make my array containing data, then I make a datatable from array, then I make datagridview from datatable.I don't know if it's the correct way but it seems work.In a column I make random numbers for test: for example I have on column "Time" these values: 1155, 1725, 584, 996, 1352.Then I try to sort with code when I press pushbutton: it doesn't work because I have the values:1155, 1352, 1725, 1758 (until now it seems to work correctly), but then I have 584 and 996 values: wrong!Ok, let's try with the manual sorting: same result.I filled cells with "integer" values, let's try using strings, then I used "value.tostring" same result.I also tryed to fill strings with blankspaces to obtain same length, but nothing changed. "1155", "1352", "1725", "1758", " 584", " 996".Then I tryed to fill with "0" values:"1155", "1352", "1725", "1758", "0584", "0996".The same.How can I fill cells values?
View 9 RepliesI found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)
<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....