I have several list boxes on a form, the items collection is filled at design time and the selectedIndex is changed at run time. when I change the SelectedIndex the backcolor of the control changes. I don't want this to happen.
View 1 RepliesOk here is the problem I have. On the tab control in visual basic 2010 there does not seem to be an option to change backcolor. I have searched the web for 6 hours (no joke actually 6 hours) but I have not been successful.
View 4 RepliesI have searched the web and not found a good resolution for this problem in vb.net.
When you change a color in the controls property it does not respond with the color changes.
I have a listbox and two buttons. Each of my button is labeled UP and DOWN. When I press UP, the current item in my listbox will be moved one level (or index) up and when I press DOWN button the current item goes one level down. I have been trying to manipulate the selectedindex property but it isn't working.
View 11 RepliesCode for button:
Protected Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim li1 As ListItem
Dim addList As New List(Of ListItem)
[code]....
Updates are happening on the load of a dropdownbox This has something to do with autopostbacks and the page load I think, can someone please help When I click the add button even if I have selected an item in the listbox, it will always return an error message. I don't think the listbox changedselected item is firing.
i modified my tabcontrol, to change the tab forecolor, which worked but now when i try to change selectedindex in code, the correct tab is highlighted but the tabpage doesn't change. if i minimize + restore the form, the previous tab is highlighted...
View 6 RepliesI have a ComboBox which content might change. The issue is when the content is changed, 1) i lose the previous selectedIndex, and 2) SelectedIndex is set to -1. I would like an MVVM solution, not some solution involving code-behind. I can have the SelectedIndex set to 0 on content change, but -1 is not a valid value for my model.
What i did as a 'trick' was to have the setter of the property bound to SelectedIndex to set the value to 0 when the value is set to -1. So now i don't have incorrect value in my model. But the ComboBox does not display the "0"th item, rather an empty box.
What could i do to have my ComboBox display the first item (index 0) when its content changes ?
[Code]...
Weeks is a Notifying property that is a list of strings. It is changed when i change the Year property.WeekNumber is a notifying property of type integer. Now when it is set to -1, i set the corresponding private member to 0 to avoid wrong value in my model.
I am trying to read values from textbox controls and combobox controls on a form. Reading the values from textbox controls is working fine but I cannot read from the 3 combo boxes. Here is some simplified code of what I am trying to do.
[Code]....
I'm building an app that is a basic daytimer type of app. My problem is that I can't get the textbox(Textbox1) backcolor and text to change when I need it to. For instance, if there are events for January 12 and the user clicks on the Jan 12 link in the Calendar control, if there are any events in the SQL table for that day it should populate the appropriate times. The funny, or not so funny, thing is that I have another textbox named "TheEvent" that I can change the backcolor and text on with the code below and it works fine.[code]...
View 2 RepliesHow to Change BackColor in mdiForm(vb.net 2008)?
View 2 RepliesI have a problem with changing the color of a button (in vb.net). I have searched the web and plenty of people are willing to tell me HOW TO change the color but my problem is - it doesn't. I say it doesn't, it does when it has finished the rest of the code in the Sub. Can anyone furnish me with an explanation please as to why it doesn't happen when I ask? I'm using Visual Studio 2008
View 2 RepliesHow do I change the back color of my MdiContainer?
View 1 RepliesI want to change the backColor of particular date.Mine code is only just bold the particular date,but not changing the BackColor.
Private Sub Calendar1_DayRender(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DayRenderEventArgs) Handles Calendar1.DayRender
[Code].....
I tried to change the TabControl back color but only succeeded changing the tabs back color (with the code below) but not the tab control color (which is behind the tabs, in the upper right corner).
Private Sub TabControl1_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles TabControl1.DrawItem
'Firstly we'll define some parameters.
Dim CurrentTab As TabPage = TabControl1.TabPages(e.Index)
Dim ItemRect As Rectangle = TabControl1.GetTabRect(e.Index)
[Code] .....
I look for way of easy change ToolStrip colour from horribel blue to any other color. I try make gradient image in memory for set BackgroundImage property but cannot know way to make image gradient for memory.
View 4 RepliesI'm trying to change the existing 10 labels color on my form at runtime they are named this way (label1,label2,label3...label10) however i haven't bin able to successfully do it so far. Here is the code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim LabelArray(10) As Label
For x As Integer = 0 To 9
Dim strLabelName As String = "Label" + x.ToString
[Code] .....
How can i change textbox BackColor in code-behind to something like this:
[Code]...
So im makeing class, where i need to change BackColor for part of form..What i meen is, i need to change forms BackColor, but not for all form, but for, example 20px from top..
View 5 RepliesI want to Check All Date of DataGridView if the Date Is Greater than Or Equal Date.now he Change backcolor Of Cell Or Row to red[code]...
View 1 RepliesI would like to change backcolor of current row in datagridview. Now this thing must work even if i change row trough keyboard, so click event doesn't do the trick for me.The thing is... i would like to accomplish something similar like the code below but on diferent event
Private Sub DataGridView_CellDoubleClick....
Me.DataGridView.CurrentRow.DefaultCellStyle.BackColor = Color.AntiqueWhite
I have a databound combo box column. When a value in another field starts with an 8, I want to make the combo box read-only and turn the background gray so the user knows it is read-only.
Here is the code I'm using, where am I going wrong? It doesn't change the backcolor to gray.
Private Sub dgvTest_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvTest.CellFormatting
[Code]....
i have richtextbox which set enable to false. I want to change the backcolor to any color beside its default grey color. Is it possible?
View 4 RepliesI would like to change the backcolor of the cell in a row based upon the value of a checkbox in another cell. The value of cell 2 would be a checkbox, so it is either true or false. If it is true, then color the backcolor of just cell 1?
If MyDataGridView.Rows.Count > 1 Then
For Each orow As DataGridViewRow In MyDataGridView.Rows
Console.WriteLine("DK {0}", orow.Index)[code]......
In WinForms (Vb.Net / Framework 3.5), I've created a BindableListView control that has a DataSource property that accepts IDataReader's, DataTable's, Array's, Generic Lists and Single objects. I also added the ability to alternate colors when the data is bound to the ListView (I put in sorting also by default with support for numeric & date time). What I have not been able to figure out yet is how to change the selected item's color from the System color (without changing the system color which I don't want to do). I've used the ItemSelectionChanged and SelectedIndexChanged to change the BackColor of the ListViewItem but the selected color always overrides the BackColor (HideSelection doesn't work because it only does that when the control loses focus). My question, Is there a way to change the selected items color (without drawing it myself)?
View 3 RepliesWhen I change the BackColor for a Form, and then add new buttons, they have by default the same BackColor as the Form itself. That does not show on my Windows 7 development computer, but when I use the program on an XP machine, all buttons appear the same color as the form.
I correct this by changing the button's BackColor property to ButtonFace, but it is a pain to do it all the time and some times it gets past me and a wrong color button goes into the application.
Is there a way to change how this works so all buttons are placed with ButtonFace BackColor by default?
How can I change a form's backcolor to gradient one. The code (VB.Net) -
e.Graphics.FillRectangle(New Drawing.Drawing2D.LinearGradientBrush(New PointF(Me.Width, 0),
New PointF(Me.Width, Me.Height), Color.FromArgb(0, 58, 140),
Color.FromArgb(0, 215, 255)), New RectangleF(0, 0, Me.Width, Me.Height))
'fade from left to right
This code changes the form's background to a gradient one. It works fine. Now I want this to take place in an MDI form which will be a container for other forms. If I turn option IsContainer = False then it works but otherwise it does now. How can I change backcolor of MDI Form to a gradient one ?
I am trying to change the backcolor of a tooltip using
tooltip.BackColor = Color
For some reason it stays white.
I'm trying to make the BackColor of each row the same when a certain field is equal. When it reaches a row where this field is not equal to the previous one, it changes the BackColor property of the row.
Below is what I've come up with... but all the rows are remaining the same color. From what I can tell i'm changing the DefaultCellStyle.BackColor property and that applies to all cells, not just the current row in the loop. What property do I change to only affect the current row in the loop?
vb
Private Sub CommonSiteDGVBackColor()
Dim switchBackColor As Boolean = False
Dim prevSite As String = Nothing
[code]....
I'm trying to chnage listview group backcolor and font.
I can't find any way to do that... There has to be a way to control these settings. I'm able to change headers properties but not group.
i have 10 rows in datagrid view i use V S 2010 How can i change a backcolor of odd and even rows different.i try my best but i has one error that is Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
how can i make a single column backcolor after all rows backcolor is set
i write my code on form load event.my code is in vb.net(windows form) is as follows:
[Code]...