CheckBox In DataGridViewCheckBoxColumn Won't Change To False When Clicked
Jan 9, 2012
For some reason, I can't change the checkbox from True to False when I click the checkbox in my DataGridViewCheckBoxColumn called "Select". I setup my DataGridView (dgvWBFOrphans) with 5 TextBox columns that are Read-Only and 1 CheckBox column that is not Read-Only. I use a stored procedure and data reader to load the DataTable which is used as the DataSource for dgvWBFOrphans. I want all the checkboxes to default to True and allow the users to uncheck certain rows in the "Select" column.
Dim dtOrphans As New DataTable
Using cnn As New SqlClient.SqlConnection(clsDBConn.clsDBConnections.prpConnString)
cnn.Open()
[code]....
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Aug 13, 2009
I would like to make a applcation that after checkbox inside datagridview is checked. After calcuation stuff, if result less than standard, then it set the checkbox to not checked state. But I find that checkbox in datagridview does not change. It changed after I click other checkbox. What I want is lagging one cycle. I tried dgv.refresh() or update event , no effect.
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Apr 12, 2010
I want to be able to only set one record in my tables as a default value. So when I check the checkboxcolumn of one row in my datagridview all the other checboxes in the other rows must be set to false. How can I do this?
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Jun 4, 2011
I have created an Unbound DataGridView. It has has 4 Columns Name, Last Name, Picture, CheckBox. I would like to do change the checkbox's enabled state true or false (editable or not) at the time I add the row
Not its checked state :) and would also like to change image that is placed in the Image column cell during the add row.
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Apr 12, 2009
DataGridViewCheckBoxColumn - Only 1 checkbox can be checked at a time?????????????//
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Sep 1, 2010
I have an asp:checkbox control on an aspx page I am working on. This checkbox is within a custom control and previously was posting back every time it was clicked. I am in the process of ajaxifying the page and have come across a problem. When I remove the attribute AutoPostBack="True" from the asp:checkbox, the vb code returns False when I check myCheckbox.checked (this is on a postback else where on the page what has not be ajaxified), even though I can see the box is indeed checked.
I am assuming that because the checkbox no longer posts back, for some reason the VB code (or the view state maybe) doesn't see it as having been checked. Is this correct, and if so, how to I correct it?
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Apr 4, 2012
I've read a few articles talking about checkboxes always returning a false state,[code]I though it was due to the second input that it was always returning a false state.
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Mar 18, 2009
i have a checkbox bound to a column with datatype character to my database... the column uses values Y and N.also, just like to add that i have tried changing the column into character of 5 byte so that it can hold the values "True" and "False" when the property bound is the property Checked. this works okay but there are some columns that doesn't use True and False like in my statement above.is there a way that i can set my checkbox to checked when the column value it is bound to is Y and vice versa.. i noticed that in the checkbox inside a datagridview has the properties TrueValue and FalseValue but i dont see this anywhere in the checkbox not in the datagridview.
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Mar 20, 2012
I am reading values from a database 0/1 false/true to populate the checkbox .The databse field is 'PPorCollect'. How can i figure out why the checkbox is not populating ?
OpenSQLConnection()
Dim mcommand As New SqlClient.SqlCommand("up_loadOrderID", conn)
mcommand.CommandType = CommandType.StoredProcedure[code]....
I populated a textbox with the value i was reading from the database.....Interesting the value is True/False not 0/1 like i was expecting...so i changed up the above code to the below code with no resolve....
Dim PPorCollect As Integer
PPorCollect = mReader("PPorCollect")
If PPorCollect = False Then[code]...........
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Jan 22, 2012
I have a GridView with a Checkbox on the first column: Code: The thing is that the Checkbox.Checked always returns False. How can I get the checked state of the Checkboxes in this scenario? Or what would be the best approach into updating the aforementioned column? P.S. Note that click on the checkboxes doesn't post back. Nothing happens on the page until the user clicks Save (and that is the intended behavior).
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Aug 12, 2010
This is my first time using the checkbox in a datagridview. I added the column at design time and it is false for readonly and frozen. But when I click on it at runtime nothing is happening. Do I have to check it through the event?
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May 30, 2009
i need to know exactly when a checkbox is checked either by clicking or by spacebar.
I have looked at cellbeginedit, cellclick, cellcontentclick,cellendedit,cellformatting,cellleave,cellpainting,cellvalidating,cellvalidated,cellvaluechanged, and cellvalueneeded.
None of these inform me of when the checkbox value is changed. cellclick is almost the one, but it fires before the value is changed. cellvaluechanged doesnt fire until you leave the cell. the cell value changes and the cell is painted even if you dont leave the cell.
I have spent all day trying to get it right. I want to detect exactly when the checkbox value is changed so i can do some calculations and depending on the calculations, i may cancel the check mark.
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Aug 16, 2005
How can change TextBox ForeColor When that is Enabaled = False?
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Mar 25, 2012
I am stumped on this one. I have a panel (pnlKeyPad) that won't change the visible property when I try to set it to True. But when I try to set the Dock Property to DockStyle.Fill it succeeds. I have tried them in different orders, setting the parent property to the splitpanel and nothing seems to fix it. The panel is on a splitpanel that is visible. The panel is set to visible = false by default.
Any ideas of why this panel won't switch to visible when I specifically set it to visible?[code]...
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Apr 13, 2011
Update problem : When i check DataSet.HasChanges() it return false, unless position change (move next or previews) it return True.
After position changes every things is OK and updated!!
this is the
PHP
Private MyAdapter As New OleDbDataAdapter
Private MyDataSet As DataSet
[Code]....
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May 26, 2011
I have a window having 2 dropdowmlists(schemename-SN and propertyno-PN) , one chkbox ,one "VIEW" button.SN has options "all" with value=0 and many other options with respctive values.Now,i want the code should behaves as follows:
1.0n window onload, SN must b visible bt PN nt.
2.if i select SN other thn All...the PN shud b visible and if i select "All" ,PN hides.
3.when check box is checked- PN hides,and if it is unchecked- PN visible..
Important:-This whole ddl n chk box are in updatable panel,button is nt in that.I want a browser compatible code so javascript can't b used directly(cz they give problem in mozzila and chrome).Right now, i have done this JavaScript and its is working fine.
function window.onload()
{
DisableProperty();
}
[code]....
but this code is not browser compatible.here onload,onkeyup and onclick functions are used , but they dont work in other browsers except internet explorer.
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Mar 3, 2010
How do I display the value of the "Text" property of a checkbox when it is clicked?
So with the CheckedChanged event, two arguments of type sender & eventArgs are passed.
How do I the same using these arguments?
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Apr 23, 2011
when Button1 is clicked I want the cursor to change to the Hourglass cursor.
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May 20, 2009
I am using the MouseClick event toc change the image of a picturebox when it is clicked:
Private Sub PictureBox7_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox7.MouseClick
PictureBox7.Image = Image.FromFile("C:Documents and SettingsjacobscDesktoplogogoclick.png")
End Sub
The problem i have is that this tool will be used on different users computers and not just my own and at the moment when it is used on another computer it gives an error that it can'f find the image.
This obvioulsy happens as it is looking for my desktop, how can i change so that the image can be saved within the tool and therefore will work on other computers?
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Oct 20, 2011
How do I make the backcolor of a combo box change to red after the user clicks the combo box and makes a selection?
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Mar 4, 2012
how would i go about changing the text property of a button when clicked. Im using panels to switch between what the form shows but when i click the button to switch panels i want the text of the button to change but i cant figure out what property to change and how to go about doing it.
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Mar 15, 2010
I have a menu strip with a item titled options. This drops down and there is a dropdown list. Then there are various percents that the user clicks to set the transparency of the window. What code can I use to enable the percents to be clicked and the transparency to change?
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Jun 2, 2011
It's been a while since I've had to add a CheckBoxCol to a DataGridView, so I copied and pasted the code directly from the example shown in the MSDN library page here: [url]Anyway -- the column is added as expected however, there is no checkbox! (see the column "Accept" in the image I've posted). I was hoping I am missing something easy/obvious, and I've had success with this before in other apps so this is becoming frustrating.DGV's Datasource is set to a datatable found in a Dataset. Everything loads just fine. No errors.
[code]...
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Apr 21, 2012
I'm trying to define a column in my DGV that has a DataGridViewCheckBoxColumn. I've set the "FalseValue" to 0 and the "TrueValue" to 1. When I run my app, the column just shows 1's and 0's which were retrieved from the Database. NO CHECKBOX appears!
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Jun 5, 2009
I am fairly new to vb.net and the form includes 3 picture boxes in red which you can click and change their color to green, also each picture box have three text box associated with it and they are by default color dark gray. I want the system to check whether the picture boxes are clicked and if yes set the associated text box colours to white.
Here is the code I wrote:
Public Class Screen
Inherits Windows.Forms.Form
Dim T(1, 2) As TextBox
Dim S(2) As PictureBox
Dim x, i, j As Integer
[Code] .....
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Mar 20, 2010
I'm using VB.net '08 express and I have a form in a program with a picturebox. I have a series of images in My.Resources. What I am trying to do is get the images in the box to change in sequence whenever the button is clicked.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim sequence As Integer
Select Case sequence
Case 1
[code]....
When the button is clicked, the 1st image appears and the button then does nothing.
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Jun 13, 2010
Imports System
Imports System.Windows.Forms
Class MyButtonClass
[code].....
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Apr 9, 2011
i am having a problem with a calculator that i am making. i am using radio buttons as selectors for the operations (+-*/). i have two input-boxes. i want to do some error checking. for example if the user want to find the mod of a number, i want them to only use inputbox1 to enter the value. [Code] the problem is that when other radio buttons are clicked the effect doesn't change. how can i fix it so that other radio buttons don't have the same action. i am using visual studios 2008 professional.
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Jun 24, 2010
I have three radiobuttons in a groupbox. When they are not bound to application settings, they behave normally.After binding each of their checked properties to application settings, the following happens: I have to click an uncheckedradiobutton two times to have it checked. After the first click, all three are unchecked.
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Apr 7, 2010
How would I go about changing the color of a line of text in a Listbox when the user clicks a button? I have tried using ListBox1.Items(ListBox1.SelectedItem).Forecolor = Color.Gray, but I receive the error "Conversion from string "Mathematics 1" to type 'Integer' is not valid."
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