Unbound DataGridView - Change The Checkbox's Enabled State True Or False (editable Or Not) At The Time Add The Row

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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VS 2005 Listview - Convert The Strings Of Checked From True To Enabled And From False To Disabled?

May 8, 2012

I need to work on my listview. Do you know how I can convert the strings of checked from true to enabled and from false to disabled?

[Code]...

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Datagridviewcheckbox Set False - Checkbox In Datagridview Does Not Change

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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Store True Or False Value Based On State Of Check Box

Jun 27, 2011

I want to store true or false value based on the state of check box here is my insert statement, the problem is this this insert statement stores 1 or 0 instead of 1 or 0 i want to store true or false how to achieve this. [code]

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C# - Question Mark Indicates That This Is A Nullable (tri-state) Bool That Can Be True, False. Or Null

Aug 4, 2009

I am working through my new MVC book and of course, the samples are all in c# as usual. There is a line of code that says public bool? WillAttend { get; set; }

The author explains that the question mark indicates that this is a nullable (tri-state) bool that can be true, false. or null. (A new C# 3 convention.) Does vb.net support any convention like this. Certainly I can declare a boolean in vb.net and I can explicitly set it to Null (Nothing in vb.net).

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VS 2005 Checkbox Custom True And False Value

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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Reading Values From A Database 0/1 False/true To Populate The Checkbox ?

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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Panel's Visible Property Won't Change From 'False' To 'True'

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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Build A Form That Will Present One Question At A Time With True False Buttons?

Jul 22, 2010

I am trying to build a form that will present one question at a time with true false buttons. It will tell the user how many questions they got right at the end of the quiz. how to i present one question at a time ?? since one button handles only one event.

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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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VS 2010 Change TextBox State With CheckBox

Dec 22, 2011

Public Class Form1
Private Sub CheckBox2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox2.CheckedChanged

[Code]....

As you can see, when I enable/disable my checkbox it enables/disables my textbox.

The thing is, I have more than one textbox, how can i add more textboxes to be enabled/disabled?

I tried using If TextBox2.Enabled = True AND TextBox1.Enabled = True Then
TextBox2.Enabled = False And TextBox1.Enabled = False. (of course fails)

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Detecting Checkbox State In DataGridView?

Feb 3, 2011

I have a DataGridView control in a .Net application that contains a checkbox column. I would like for the user to be able to edit the checkboxes. The issue that I am running into is that I cannot detect the state of the checkbox after the user checks it.

If the checkbox was originally checked, then it will return checked as soon as the DataGridViewCheckBoxCell gets focus. But, if I click on the checkbox again and unchecks it, then it still returns checked. From that point on, it will always return checked regardless of the actual state of the checkbox until it looses focus and gains it again.

Likewise, if the checkbox was originally unchecked, then when it gets focus it will return unchecked in the click event regardless of what the state of the checkbox actually is.

Here is my code.

Private Sub grdTemplates_CellContentClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles grdTemplates.CellContentClick

[Code].....

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DataGridView Cell Editable - Make Some Cells Editable In Column?

Mar 9, 2012

[Code]...

But this makes every cell in column editable. Is there a way i can make some cells editable in column? If you know how to do it,

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Unbound Datagridview Control Cannot Be Filled At Design Time Using Column Names?

Oct 10, 2011

Apparently, an unbound datagridview control cannot be filled at design time, so I have to create rows + fill cells through code. Currently, I use the following type of code to refer to cells:

[Code]...

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Make Columns In Datagridview Non-editable Or Editable?

Jun 1, 2011

How to make some columns in datagridview editable and some columns are non-editable in the same datagridview control??

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Show Bit Column As A Checkbox Column In Unbound Datagridview

May 14, 2010

Dim Comp = From C In db.Table1 _
Select C.Completed, C.Taken, C.Namne
Datagridview1.DataSource = Comp

Am using the Entity Framework and Columns Completed and Taken are of bit Datatype. When the query results are displayed in the datagridview, these bit columns are returned as of ColumnType Textbox - so i get a Datagridview textbox column with true or false string values.

I want to display Completed and Taken as Checkbox columns (either ticked for True or un-ticked for false) but ofcourse i can't do this in EditColumn dialogue because the Datagridview is unbound.

how can i change this in code at runtime

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Remove The Selection - Unable To Set Enabled = False?

Nov 2, 2011

In my DataGridView, I have a full row selection, but i want to have no selection at all, but I need the DataGridView to still be enabled, so I can't just set enabled = false

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If Click In Empty Listbox Then Timer1.Enabled = False

Apr 15, 2012

Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
If ListBox1.SelectedItem IsNot Nothing Then

[Code].....

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Use (if Not Ispostback) - Last Note With ("EnableViewStateMac="false") It Make Ispostback True All The Time?

Nov 5, 2009

i'm working with crystal report and i use (if not ispostback) to set X and in else to retrieve X . the problem is its working properly in some pages and not working in others.this code sample.

If Not Page.IsPostBack Then
Session("VehicleStatusSelectionFormula") = SelectionFormula
Else[code]....

the problem like i said in last note with ("EnableViewStateMac="false") it make ispostback true all the time.

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Use Yes And No Instead Of True And False?

Jul 15, 2010

I wanted to create my own type that acts like the Boolean type, except I wanted to use Yes and No instead of True and False.I kind of got close but it wasnt exactly what i was going for here's what i have:

[code]...

so i have to use an integer when i dim it like:dim b as MyBool = 1 then when you look at it in the watch window b = {Yes} so i could settle for that, but with a boolean you can do this:dim b as Boolean without setting it to anything it defaults to False mine however, is Nothing. 2 things: 1. How can i get mine to default to No 2. How can i make it work like this: dim b as MyBool = Yes instead of having to use the integer this is not a requirement for anything I just wanted to know how to do it

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.net - Are These Expressions True Or False

Feb 20, 2011

The expression 3>6 AndAlso 7>4 evaluates to
A. True B. False
The expression 4>6 OrElse 10<2*6 evaluates to
A. True B. False
The expression 7>=3+4 OrElse 6<4 AndAlso 2<5 evaluates to
A. True B. False

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Boolean Changes From True To False?

Jan 18, 2010

I'm pretty new to Vb so I'm not sure of all the correct terminology etc.

Private Sub Add_mousedown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Add.MouseDown
Dim Addition As Boolean

[code].....

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Returns Value As True And False?

Sep 18, 2010

I am writing the code in the class to create the strings. I want the value to returns as true if the strings in the class are matched with two numbers or more, but if the if the strings in the class are not matched with first two numbers or not then returns the value as false.[code]....

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Set Group Box False To True

Nov 9, 2009

I have a group box set as false but when I click on radiobutton3 i want it to show at the bottom:

if radiobuttion3.checked the
radiobutton4.enabled = true
end if

but this doesn't show up my second group box when the program is running.

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Showing False To True

Nov 9, 2009

I have a Group Box Set as false but when i click one Button I want it to Show as True so i have [code] But is not Showing up when i run the program, is this the right code?

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C# - SQL Column True Or False - Use A View?

Dec 4, 2010

Simple question, I have an application and dependant on whether you are in the administration system or on the public website I want to show different results. Example: in the database for a news story in the administration I may set the column value 'showonsite' to false. So I would like this to show in the administration panel only and not on the live site.

My question is, because I require the same information just with the only one column change, live site to only show true values and administration to show both. What is the most effective way of achieving this without copy paste of code?

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Check BitArray Contains Any True / False Value?

Jun 9, 2009

In C# and Vb.net,is any way without iterating by loop a bitarray to check contins any true or false value (Dotnet 2.0) ?

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Check If BIT Retrieved From DB Is True Or False?

Aug 4, 2011

I'm trying to check if a bit retrieved from database is true or false but i have always the error IndexOutOfRangeException no matter how i get the value.

[Code]...

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Get True False Statements To Work?

Oct 10, 2009

I am trying to get true false statements to work. Each statement has its own msgbox and if true adds 1 to x. At the end i use a case function which will give the final number of x and give it a value in a textbox. What is happening instead is, if I click "no" on every Yes/No question, I get a 4. If I click "yes" on every Yes/No, I still get a 4. For car 3, 4, and 6 I want a "no" to be true. For 1,2,5,7 I want yes to be true.

HTML Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClick.Click
Dim x As Integer

[Code]......

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Intellisense - Value Is Not Showing False And True

Mar 10, 2010

i am having problem with the intellisense. i have created a boolean variable and when i try to assign value why does is shows all the members instead of false and true. Again when i try to set the height the intellisense pops up again.

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