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()
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.
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?
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.
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?
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.
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.
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]...........
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).
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?
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.
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]...
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.
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?
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.
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?
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.
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!
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] .....
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.
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.
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.
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."
