Set A Datagridview Control To Not Add A New Empty Row When Add An Entry?
Apr 16, 2011How can I set a datagridview control to not add a new empty row when I add an entry?
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DataGridView - Convert Nulls To Empty Strings And Display It In The Grid As Empty Strings
May 14, 2009I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
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DataGridView - Nonvisible Rows Are Still Visible And The DataGridView Is Empty Despite Having A DataSource
Jul 30, 2009I have several problems with rows in a DataGridView. Background information: The DataGridView (DataGridViewCalib) is in one TabPage of a TabControl, some columns of the DataGridView are automatically DataGridViewCheckBoxColumn as the DataSource have some colums which are Boolean. This is a Windows Form written in VB.Net with Visual Studio 2008. The user loads an input data file.
The problems:
1) At first arrival in the TabPage, ShowDataGridViewCalib (code below) is called. All rows are then shown in the DataGridView, despite the code saying that some rows should not be visible. Breakpoints in the code show that the code do arrive at the Rows.Visible = False events. Despite all rows beeing shown a Watch in the debugger shows that:
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There are two alternative ways of handling the rows in the code. The first attempt (commented away here) is probably the "nicest".
DataGridView - Capturing Value Of New Cell Entry?
Feb 15, 2011How do I capture the cell value of an entry in a new row in a datagridview? This is what I have so far but it's capturing the previous row's cell value:
Me.DataGridView1.CurrentRow.Cells("License").Value
After Entry Jump To Next Control
Jun 28, 2011I have a form with textboxes for entering data. One of the textboxes is for entering a value that is always one character. How can I make the cursor automatically jump to the next control when a character has been entered? I'm thinking the key press and release event and then set focus but is there a better way?
View 3 RepliesDatagridview On Data Entry Event Handler?
Apr 16, 2012If 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?
View 1 RepliesVS 2010 Limit Text Entry In DataGridView?
Jul 21, 2011Okay, I've got a datagridview in my WinForms app that auto-builds the column list from a datatable schema. It's working fine, except that it allows the user to enter values too long for the database field. For example, I have a "name" field that is defined in the Sql-Server database as a varchar(50). Is there any way to limit that cell (column?) so that it only accepts 50 characters? Right now it lets them enter anything and throws an exception later.
View 3 RepliesWhich Control I Use To As A Table Data Entry?
Feb 13, 2011I use in java JTable looks like a excell sheet create columns and rows and enter data in it.In vb 2008 what control i can use, I think table control layout not supported to data entry it supports control to in it and then add data .
View 1 RepliesDatagridview - Automatic Chart Update With New Data Entry
Jul 23, 2010my chart loads data from a datagridview. how can i automatically update my chart with new data if new values are inserted into the datagridview.
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Use An Entry In A TextBox To Display Results In A DataGridView VS 2010 VB?
Apr 15, 2011I have a single form in Visual Studio 2010...in that form...
TextBox = txtSearch
Button = cmdSearch
DataGridView = GridView1
GridView1 is bound to a View, tblAccounts.
tblAccounts includes multiple columns, including a text field for 'AccountName'...this name can be in one of two columns.I'm trying have a user enter any part of an AccountName in txtSearch, click cmdSearch, and return all matches in tblAccounts to GridView1.
[RESOLVED][2008] DataGridView Refresh / Jumps To First Entry
Feb 10, 2009I'm successfully refreshing my DataGridView/Access DB by using the following.[cod]My only problem is after the refreshes the DGV rolls back to the first entry.Is there anyway to have it refresh but stay on the same line?
View 4 RepliesControl Keyboard Entry By Using SuppressKeyPress Method
Apr 2, 2012I use VB in VS2010..My form has a textbox..I can control the keyboard entry by using the SuppressKeyPress method..However this does not work for the Menu key - I think it's the menu key - the one that looks like a combo with an arrow.This produces a large drop-down menu which I don't want.On checking various forums it appears that the following code should work..[code]
View 1 RepliesControl Data Entry In 3 Different Table With BeginTranaction?
Jun 21, 2010how can i control Data Entry in 3 different table with BeginTranaction / Commit /Rollback in vb.net 2008. i am using sql server 2000 at back end and used SqlClient,SqlConnection, ExecNonQuery method.
View 1 RepliesDirectory Entry Control Properties And Events
Feb 25, 2010I need the directory entry control properties and events.
View 1 RepliesVS 2008 : User Control For Date Entry?
Dec 29, 2011Im trying to build a user control to enter date as dd/mm/yyyy. I want to create a text box control so the user can enter the date without making a mistake.ex:-Lets assume that the user is trying to enter 31/03/2010 so when the user types 3 first the next number allowed should only be 1 or 0 because there cant be any date more than 31.and if the user enters 31/ then he should only be allowed to enter a month which has 31 days. Im trying to implement this codes in keypress method.So it checks the errors at runtime and prevents the user from typing a wrong value.So far i have got to something like this but Im stuck.Please help
Dim IndexOfCursor As Integer
IndexOfCursor = textbox1.SelectionStart
chr = e.KeyChar
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Show One Selected Entry Of Datagridview On Separate Form In Program?
Jul 15, 2011I want to show selected entry of DGV on Separate form in VB .Net.When double click on one row of DGV then this row must be open in new form. How can I do it?
View 1 RepliesCreate One To Many Data Entry Form Using Datagrid Control?
Mar 5, 2010logic to build this kind of data entry form using grid controls in vb .net.
View 3 RepliesVS 2005 : Update A Bound Control After User Entry?
Sep 29, 2009I don't think this can be that hard but I just can't get my head on it. I have a connection to an Access DB, put three text boxes representing three columns in the DB. Using the DataNavigator everything works. But what I want is to be able to enter text in say textbox1 and have textbox2 and 3 update, like when using the navigator.
Add: I want this to function like when you enter a record number in the Navigator and hit Enter, bam, goes to that record and all the text boxes update. I want to enter a number in textbox1...
Cannot 'empty' A DataTable And Corresponding Datagridview
Jun 22, 2009I have a datatable dimensioned as new.I add the columns that I need (during the form's load) I have a datagridview as on object on my form and set the datatable as its source.The table is loaded with values and they display properly.The User closes the form and returns to the 'Main' form. At this point no problems, everything is working great. NOW...The user re-opens the form containing the datagridview It has the values from the previous time it was open, plus the new values ! I have tried several things so when the user goes back into the form it only has the new values, but it always keeps the previous values and appends the new values to it. I have attempted to clear it by adding a line: datatable.rows.clear(); I have activily gone through the datagridview one row at a time and use a statement to clear the cells;
For Each DGVRow As DataGridViewRow In Me.DataGridViewErrorList.Rows
DGVRow.Cells.Clear()
Next
so far no luck.
Delete Empty Row In Datagridview?
Oct 3, 2010i have a Datagridview on my forum and when i Populate it it auto creates a empty row at the end of the grid... i have looked online and seen a few post about it but nothing seams to work... i have tryed...
DataGridView1.AllowUserToAddRows = False
How To Add New Row To An Empty Datagridview Correctly
Apr 23, 2010i'm using vb 2005.I have a datagridview binding to a datatable, and user can add new rows to it. i want to enable copy and paste, so i broke the clipboard content into string array, and tried to fill the values in the datagridview.
I had problems when i had to add new row to the datagridview. because if the user clicks the last row (*) to paste the content, i need to add new row to the datatable, however, the current row is also a new datagridview row. If i just use the following code
'dgv is the datagridview
'dt is the binding table
dt=dgv.datasource
iRow = dgv.CurrentCell.RowIndex
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Control The Entry Of Data In The Columns With The Event ChangeColumn For The Associated DataTable?
Apr 13, 2010I have a DataGridView in a form. I want to control the entry of data in the columns with the event ChangeColumn for the associated DataTable.
View 4 RepliesForms :: Auto-Detect BarCode Scan Entry OR Manual Entry - Cash Register?
Sep 8, 2009i am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
Code For Ignoring The Case Of An Entry While Checking To See If The Entry Is Correct Or Not?
Nov 4, 2011What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
View 2 RepliesRow Headers Of Datagridview Are Empty On Formload
Apr 6, 2009I use a datagridview where the rowheaders frustratingly stay blank after I load the form. If I modify/add/delete anything the rowheaders pop up. then when I sort by clicking on a columnheader the rowheaders become blank again. all these actions (load/add/modify/sort) go through the same refresh function. I can't seem to figure out why the rowheaders sporadically show up. they should stay visible all the time. btw, datagridview.refresh() doesn't work
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Show Datagridview Empty Message
May 20, 2010I have the following code and I want to say that if the datagridview - dgvImportData is empty then say this message otherwise say the other message.
View 4 RepliesHaving The Empty Textbox Control?
Jun 22, 2010I have textbox that is empty and where the cursor is flashing and I wish to move to other textboxes.What happens is that the error message is displayed first and when I press OK, only then can I move to the other textboxes. How do I stop this happening. Am I missing some code.
DesterateDan
Private Sub salesInput_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles salesInput.Validating
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Communications :: Differentiating Bar Code Entry To Keyboard Entry?
Jul 10, 2009I am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
Made Empty Or Null Field In Datagridview
Nov 15, 2009I key-in data from textbox to datagridvie..........the date data the format datatable is:
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VS 2008 Check If Datagridview Cells Are Empty?
Mar 4, 2011I've been searching around a lot to figure this out. I found some code that sort of works:
VB.NET
If String.IsNullOrEmpty(CStr(Me.dgvList.Rows(i).Cells(0).Value)) Then
End If
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