I have a class that inherits from DataGridView. However, when I create a new instance, set the position, width and height and then run the project, the datagridview is not rendered.Is there something else I need to do the make the datagridview become visible?
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How to make the textbox's border set to visible in a datagridview?[code]...
View 2 RepliesHow i make a button visible or Un Visible using the DataGridView's Checkbox...
View 1 RepliesI'm trying to make a code that say's: when the mouse is in the area of the toolbox1 then the toolbox1 becomes visible when it leaves, it becomes invisible.
View 4 RepliesI use lots of panels to hide controls and display groups of controls.
If sender Is BDVActive Or sender Is BDVCompleted Then
BDVCases.Visible = True
BDVCases.BringToFront()
[Code]...
I have a simple treeview, when I click a node I want to be able to make a panel visible when a node is clicked using a simple if then statement and make the other panels associated with the other nodes invisible. From what I read the code should be placed in the afterselect method. Was thinking would be similiar to a list box using selected index or something but can't seem to get it to work.
View 5 RepliesI have placed several PictureBox Images of different colored dots(which represent lights) on an image of a Christmas Tree. I can make the lights randomly flash using a randomGenerator and a Select case statement. However, the code is very long. There are 67 lights on this tree and the code is 71 pages long. There has to be an easier way to do this. So far I have tried the following with two images of lights just to see if it would work and it does not work:
Dim picLight(2) As
Boolean
For intX
[code]....
I have several problems with rows in a DataGridView. Background information: The DataGridView (DataGridViewCalib) is in one TabPage of a TabControl, some columns of the DataGridView are automatically DataGridViewCheckBoxColumn as the DataSource have some colums which are Boolean. This is a Windows Form written in VB.Net with Visual Studio 2008. The user loads an input data file.
The problems:
1) At first arrival in the TabPage, ShowDataGridViewCalib (code below) is called. All rows are then shown in the DataGridView, despite the code saying that some rows should not be visible. Breakpoints in the code show that the code do arrive at the Rows.Visible = False events. Despite all rows beeing shown a Watch in the debugger shows that:
[code]...
There are two alternative ways of handling the rows in the code. The first attempt (commented away here) is probably the "nicest".
Below is the exception code info. when I try to make form visible for the first time from another form then I get an exception code. something like 'a required variable not set'
Quote:
CODE:
I am populating a datagridview with data from a table and some unbound columns This is a large table and I want the form to fill the screen and the datagridview to fill the top half of the form. To do this, I have put a panel on the top and a panel at the bottom.I have anchored the dgv to the top left and docked it to the toplumnHeaderHeightSize is AutoSizehe issue is that the ColumnHeaders are not visible unless I click on the restore down button on the top right part of the screen
View 4 Repliesi have datagridview and datasource is dataset. Everything is fine no problem.
It has 3 coloumns, ID, Name, City. ID is PK
Now I have rowfilter on dataset like this
dataset.tables(0).defaultview.rowfilter = "Name Like '" + txtName.text + "%'"
everything is fine till here. it show selected records.
now, i have another text box on form which ask for id and search id in datagrid like this
dim dras datarow = dataset.tables(0).findbyid(cint(txtId.text)
in above case if id found then it will dr with row. which is fine...
the question is how i can find if current row is in list or not because of filter on dataset.table
I just pasted a datagridview on the form , added a button and named its text as "ADD". I even changed the UseColumnTextForButton
property to true . But when the form loads the button text is not displaying .
i have a DataGridView bound to a table that has 22 fields in it. In the datagridview columns, the first 2 have the visible property set to false and the last 7 also set to false. This works since there are 13 columns displayed in the datagridview when the program runs. Here's where my issue come in. When I do the following, Console.WriteLine("Column count = " & DataGridView1.Columns.Count.ToString()), I get the expected "Column count = 22 in the output. However, when I do Console.WriteLine("Visible = " & DataGridView1.Columns.GetColumnCount(DataGridViewElementStates.Visible)), I get 20 instead of the expected 13 that actually have the property set to visible.
[Code]...
I'm trying to focus input and fire the editing event on each new row that I add to a DataGridView in my form.[code]...
View 1 RepliesI do not know what this term in the computer. but I try to send pictures, might be able to know what I mean.I want to eliminate the columns that I marked in the picture.how? what can be set for width 0 ?
View 3 RepliesI'm a beginner at using vb. I'm having a problem with making group boxes visible. I have two buttons: btnLevel1 & btnLevel2. When user clicks btnLevel1 GroupBox3 must be visible and GroupBox4 must be hidden. And when user clicks btnLevel2 GroupBox4 must be visible.
[Code]....
i just uninstalled vb2010 express beta 2 + installed vs2010pro rc1.
how do i make the immediate window visible? i tried ctrl+shift+i but it doesn't show...
A DataGridView in my VB.NET 2008 program contains over 15,000 rows. I loop through the rows, totalling groups of rows and appending 'total rows' and one 'Final total row' to the DataGridView. That works fine. I want to initially hide all rows except for the total rows, giving the user the option to show all 'detail' rows. If i place the statement << dgvTitleCounts.Rows(intRow).Visible = False >> in the loop, execution time increases by three minutes and that is unacceptable.
I see two options: (1) find a faster way of making all rows invisible; and (2) place the total rows in a separate DataSet and bound DataGridView.
I have a access table column ("d") and rows with value Datetime. How can I ..... when form load make the datetime now ..visible. What is the code for making the rows with datetime value now start with index 0.
View 4 Repliesi have a datagridview which am display some data and i have also cell formating event which according to that data that are populate am changing the row format and one of my columns are of type image and am load an image depending on the row values.day by day the data in are become larger and when am trying to load that data to the datagridview is taking much time in order to display that data to the user.
1st ,when the event of cell formating is fired, is fired only for the visible area of datagridview rows? or is making changes for all the rows in the datagridview.
2nd , is there any way to load only data that are visible in the datagridview area and when the user scrolls down or up to query also the rest?
I've got a form that populates a DataGridView from an excel file. How would I filter that DataGridView so only the search criteria are visible. I need to search through 2 columns by all rows. I'm not very good with datasources I guess and can't figure out what all I need to accomplish this. DataSets, DataViews, DataTables.
View 17 Repliesa common VB.NET class should look like the following:
Public Class MyClassName
End Class
Besides, I have already seen, if I remember correctly, all of the import statements visible just like in C#:
Imports System
Imports System.Data
Imports System.Linq
Public Class MyClassName
End Class
How to make these default imports visible by default in VB.NET using Visual Studio 2008?Is there some setting or the like in the options I shall set?
I have this code for hiding a table and a cell in aspx, backend vb.net
Code:
For Each row As HtmlTableRow In tab_a1.Rows
If row.ID = "a1" Then
For Each cell As HtmlTableCell In row.Cells
cell.Visible = (cell.ID = "a1")
[Code] .....
Now instead of tables I'm using tags. How can I use similar code and make div's visible and invisible?
Generally speaking, a common VB.NET class should look like the following:Public Class MyClassNameEnd Class
View 1 Repliesi know how to draw a rectangle and fill it but how do i make it visible over a WebBrowser control, also how would i make the FillRectangle 60% transparent? i have found no understandable results on google. could someone please help me figure this out?
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim myGraphics As Graphics
Dim MyBrush As New SolidBrush(Color.FromArgb(128, 0, 0, 255))
myGraphics = Graphics.FromHwnd(TextBox1.Text)
myGraphics.FillRectangle(MyBrush, New Rectangle(0, 0, 100, 100))
End Sub
I have a form with six picture boxes on it. Each Picture Box has a button underneath it. When the button in clicked, a "Label" and "Textbox" appears. My question is, how can I close the currently open "Label" and "Textbox", when I click another button. I have a working code below, but it's not efficient. As you can see, I will have to list all labels and textboxes on the form. Is there a way to identify all labels and textboxes without naming them all. [code]...
View 3 RepliesWell im not understanding to much about the panel control. I am not understanding on how to do this panel control put a textbox and button control in it, when the user selects load from Internet, you make the panel control visible, then use the textbox to get the URL from the user and the button to fire the event that makes everything happen
View 1 RepliesI have written a VB2008 program in which I want to put graphics output in a PictureBox but keep the PictureBox hidden until a "Show Graphics" button is pressed at runtime. I have done this by setting the PictureBox's Visble property to False at design time and then adding a line in the Button Click code (before the main graphics code) to make .visible = true. Now when I press the button, the picture box becomes visible but stays blank. I have to press the Button a second time to get the graphics to show. It doesn't matter where in the Button code I place the PictureBox1.visible = true line, the result is the sdame. WHY ? Other VB Controls, eg RichTextBox will stand being made visible and then display output with only one click of the button, why is PictureBox different ?
View 15 RepliesI am working on a project where I have to automate Internet Explorer to perform certain tasks. In this context, I have a small snippet of code which creates Internet Explorer Object and navigate to Microsoft website. When I run the code from VS 2008, It works fine and IE is visible. but when I publish the code and run from IIS, it works again but IE is in invisible mode.My Question is how to make the Internet Explorer visible?I also added the impersonation to web.config but the problem still exists.
Code is as under:
Imports SHDocVw
Partial Public Class _Default
Inherits System.Web.UI.Page
[code]...
I have a tabcontrol which contain 4 tabpages. Each tabpage have a datagridview.
When i select any tabpage the datagridview of it will show.
I want to check what datagridview is showwing(visible) in button1 click event.
I dont want to loop through controls thenafter check visible propety of control.
