tell way to get: KEYPRESS event in the cells of DataGrid ?If user enters numeric value in Quantity, it would calculate & give result in Rate.How can I fire KEYPRESS event in cell
View 3 RepliesMy question is how can I create an event that would catch an enter key when I am editing it. Like I would type a note and hit enter key when I finish. Because columns of the datagrid does not have events like other controls or datagrid itself. What I need is something like this:
Private Sub ColumnNote_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ColumnNote.KeyPress
End Sub
[Code]....
Programming language is vb.net
View 1 Repliesi want to search data according to textbox i want to write a code in eventstextbox1_keypress whenever you write a word L in textbox so the dgview row select the row where the row starts with L and after that i press I so the select dgview row whrer
View 4 Replies1. How can i disable a cell of datagrid in vb.net
2. How can i show current date in datagrid cell
i have used this peace of code on form load event
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Im using this code to populate a datagridview:
Private Sub PopGrid(ByVal Filename As String)
Dim ConnectionString As String = "Driver={Microsoft Excel Driver (*.xls)};READONLY=FALSE;DriverId=790;Dbq=" & Filename & ";"
Dim Con As New OdbcConnection(ConnectionString)
[code]....
But when i look at the grid, there is alot of empty cells that is NOT empty in the excelsheet.
I'm trying to write an alarm clock application. When the program runs, a clock is displayed along with an 'Alarms' button. If the user presses the 'Alarms' button a new form opens with a datagrid with 2 colums, 'Time' + 'Message'. What I want to do is have the user enter a time and a message. The tick event should check the times entered in the datagrid, and when it reaches a time entered, the appropiate message is displayed.The problem I am having is how do I extract data from the cells of the datagrid. I want to compare it with the current time but am unsure how to do it. I've attached my sample code so far which just declares a time on the main form and shows message when time is reached.[code]
View 1 RepliesOkay so I'm trying to hide my program (only one form) so I'll just make a button and put me.visible = false , but I'm just wondering how to make my program detect a keypress (^ key) and show itself? I tried creating a timer and chucking
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I have a mature VB6 program that depends heavily on flexgrids for the display.It appears that DataGrids are somewhat of a replacement for flexgrid?I need to update individual cells over and over and I don't see how to address a single cell. Appears to me that most samples are tied to a database which I don't have.If I set up a datagrid that is say 3x3, how do I read and write from and to say the center cell?
View 2 RepliesI decided to rewrite my project. Hit another snag. How do I write the contents from a datagrid to a file and back into the datagrid again later? (Actually, I've done the writing ok - but for the life of me can't get the data back into a blank datagrid.
Here's what I done so far:
Imports System
Imports System.IO
Imports System.Text
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Im trying to colour cells in a datagrid depending on the value of the cell. Ive got a situation where I the 1st time the grid id displayed the coluring doesnt work, but then if I refresh the grid the colouring does work.
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I'm extracting data form a mysql using a huge query made up of three unions to searc on different tables for a telephone number. e.g. contacts, leads, etc.Iy workd perfectly in a sql tool and is well tested.When I run the query in visual studio, I get a result, two columns contaon the same image you get when a webpage image link is boken. These columns should contain a mobile phone number and an ID.Both are stored on mysql as varchars.No data is presented for these columns even though it exists with gaps
View 3 Repliesi am having some problems running some code when there is a cell within my datagrid selected.is there some code i can use to deselect any cells that are selected within the datagrid?i have looked into this and tried, but nothing seems to do the right trick.
View 1 RepliesI couldn't manage what the matter is not even after searching. Here my question goes:I need to do a simple task (close my form on pressing escape key) and I use the following code:
Code:
Protected Overrides Sub OnKeyDown(ByVal e As System.Windows.Forms.KeyEventArgs)
Select Case (e.KeyData)
'Close on Escape
Well , it works when I click escape my form closes , but.. if I have pressed by accident or some else matter any of the arrow keys (up , down , left , right) before escape and then hit escape nothing happens. I checked if any other key does that and as I see it does not.
I just want to ask why my KeyPress event is apparently not working. What I want is that when I press the letter m, the selectedindex property of my listboxes would change. Here is the code;
Select Case Asc(e.KeyChar)
Case 13
Try
tray.ListBox1.SelectedIndex = tray.ListBox1.SelectedIndex + 1
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I also want to know what the "e.handled = true" is statement for. I set the KeyPreview property of my form to false and true but it's not working as well. the KeyPress event should be triggered regardless of the control within the form that is in focus.
Is it possible to capture a keypress with my application, even if the application isn't focused?And if it is, could someone please point me in the right direction? (I.E things to look up, tutorials)
View 2 RepliesI am trying to create keypress handler that will execute a line of code when Tab, Space, or Enter key is pressed or passed by the scanner gun while the control is in focus. I got it to work with space and enter key but with tab key, the cursor will just jump to the next tab stop without executing the code.
Private Sub Button2_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles Button2.KeyPress
Dim keyChar As Char
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I'm trying to create an application that uses a PictureBox to display an image. I use the arrows keys to switch images and the space bar to rotate the current image. Since the KeyDown or KeyPress events don�t get fired when I click the arrow keys, I had to override ProcessCmdKey. It works fine, the problem is: the applications also has a few buttons and when I click an arrow key the image gets switched but the button�s focus change as well, worst yet, when I press the space bar, the image gets rotated but the button which has the focus gets pressed.
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How can we disable a cell of datagrid in vb.net and how to show date in datagrid cell in vb.net
View 3 Replies1. How can we disable the cells of a datagrid???2. How can we show date in a cell of datagrid???I have used this peace of code on for load event
View 6 RepliesI am writing a function to export data to Excel using the Office Interop in VB .NET. I am currently writing the cells directly using the Excel worksheet's Cells() method:
worksheet.Cells(rowIndex, colIndex) = data(rowIndex)(colIndex)
This is taking a long time for large amounts of data. Is there a faster way to write a lot of data to Excel at once?
I have two textboxes and as the user types in one I want to append the text to another textbox.How do I allow the user to delete characters in the first textbox with backspace/delete key and have those changes replicated in the 2nd textbox?
View 3 Replieshow to capture keypress event outside an application
View 1 RepliesWe Could Easily Called A Functions By Pressing Enter In keypress Event. On textbox in vb.net. Eg.:-
If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
Call Fsn()
End If
But. I can not called the functions on ComboBox. IN similar fashion. please help me to called a Funtion when we press ENTER IN ComboBox.
I am trying to add to items to a combobox by using the "enter" key. It does work when I add the first item, but if I manually clear the box and add another items it does not get added to the list.
(1) I click in the combobox and type "hello" and press the "enter" key
(2) I click on the dropdown arrow and see that "hello" is in the list
(3) I select "hello" in the box and erase it, item is still in the list
(4) I type "goodbye" in the box and press the "enter" key
(5) "hello" is still in the list but "goodbye" is not
Here is the code:
Private Sub CopyrightCombo_Keypress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles CopyrightCombo.KeyPress
If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
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if I comment the if/end if line and type "hello" the items added to the combobox list are: "h", "he", "hel", "hell", "hello" wich makes sens since the add items is run on every keypress? I know that my commands for adding items is good, I know that my keypress event is handled properly but not when I specify using the "enter" key.
using a datagridview and it bind by 3 rows and 3 columns,my task is when the press the F5 key then need to execute some code, my problem is if the datagridview cell is focused then now i press F5 key then the next task is executed but if the cursor is in the cell and i press F5 Key then the Key events was fired
View 1 RepliesI am using the Event Handler below for the Enter Key Press Event, it is running when ever any of the keys is pressed. This is not so much a problem when the app. is running, unnecessary yes. It is giving me problems when ever I am Debugging using Breakpoints. How can I change the Handler so it only runs when the Enter Key is Pressed, doing away with the If statement?
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If e.KeyChar = Chr(Keys.Enter) Then
'Different code blocks will run here depending on what
'TextBox or Label is selected.
End If
End Sub
As part of a program that I am composing, the user needs to enter a value by way of a NumericUpDown control on one particular form. Once this and other criteria have been evaluated, the program will then move to the next "step" of the program. If they use the spinner built into the NumericUpDown control, the event is fired on every change and that's all well and good, but if they double-click the value in the control then type the value in manually, it doesn't fire until the control no longer has focus. I can't depend that this might be the case however. Using the "KeyPress" event, I can in fact know when the control has focus and the user has typed but what I cannot seem to get it to do is to get the control to "read" these keystrokes as values until the control loses focus.
View 3 Repliesanyone know how to invoke the KeyPress event ? This code shows what I would like to do, but it simply calls the eventhandler and does not insert the text into the text box, so is not what I want/need.
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I'm using VB.NET (2008) and .NET framework 3.5. In my application I've got an on screen button that, when pressed, sends "00" as the characters [via SendKeys.Send("00")]. I also have a keyboard that has a '00' key that sends "00", two zeros, when pressed. I'm picking up the keypress using the form's KeyDown event - it fires twice, once for each "0" and works whether the on-screen or keyboard '00' is pressed. There's also a singe '0' on-screen button and key on the keyboard that sends "0".
I want to be able to treat the "00" as a single event. I.E. in the KeyDown handler, if the character is a single zero "0", I would like to check the next character to see if it is also a zero "0". If it is then I can handle it appropriately, but also need to remove it (from the keyboard buffer?) so that it doesn't fire the second KeyDown event. If it's not a zero then it should be left to fire the next event in the normal fashion.