VS 2010 Find Value Of Cell In Datagridview By Column Header Name?
Aug 25, 2011
I have been using this code to find the value of the cell in a datagrid view
Dim eRow As Integer
eRow = dgv.CurrentRow.Index
MessageBox.Show(dgv.Item(0, eRow).Value)
This works fine when the columns unless the user changes the order of the column.
So what I am trying to achieve is to find the value if the cell even if the order of the columns is changed. Is there a way instead of saying column (0, eRow) I can add (ColumnHeaderName = "NameHere", eRow) or something along those lines.
I'm trying to render a checkbox in a datagridview column header so that when the checkbox is checked/unchecked all the cells in that column should be checked/unchecked accordingly.The datagridview is bound to a database table but the column containing the checkbox header cell is unbound. The problem is, whenever i click the header checkbox, all the cells in that column are checked but the header checkbox itself gets invisible. If I click the HEADER (though the checkbox is invisible, still I can click the header) again, all the cells in the column below are unchecked and the header checkbox becomes visible and unchecked. Everything is happening as expected except the visibility of the header checkbox. Why is it so?
''' <summary> ''' The custom class for checkbox header cell. ''' </summary>
I'm trying to render a checkbox in a datagridview column header so that when the checkbox is hecked/unchecked all the cells in that column should be checked/unchecked accordingly. The datagridview is bound to a database table but the column containing the checkbox header cell is unbound. The problem is, whenever i click the header checkbox, all the cells in that column are checked but the header checkbox itself gets invisible.If I click the HEADER (though the checkbox is invisible, still I can click the header) again, all the cells in the column below are unchecked and the header checkbox becomes visible and unchecked. Everything is happening as expected except the visibility of the header checkbox. Why is it so?
How can I determine if the user clicked on a cell in the grid, or on the column header? In both cases the CellDoubleClick Handler is called. I want to handle only the first case.
I need to display the column header and cell value of the clicked cell in the data grid. For example if I click Argentina from the country column, the text box will display country = Argentina.So far the code I have is, please help me figure out the code for displaying the information in the text box
Private Sub DataGridView1_CellClick(ByVal sender As
in my application i created table called houseloading which has field called housename.which is inserted into the sqlserver database. my table will look like this
///column name house values red green
what i want now is i want to display the values red green as column header in datagridview
It seems that on clicking datagridview column header, the column will be automatically sorted based on the column type. I have a column showing some numbers. If column type is string, it sorts "1","20","3" into "1","20","3". If column type is double, it sorts into "1","3","20" which is the result that I want. However, there might be some erros in the numbers and error messages(text) will show in the cell instead of numbers. So I cannot set the column type as double. I want to ignore these error messages and sort all the numbers. How can I do this?
Also, I need to add some background colors to different rows in datagridview. So in the column header click event, I call the bkgColor Sub to achieve this. My question is that how can I override the sorting method in this event?
Private Sub DataGridView1_ColumnHeaderMouseClick(sender As Object, e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.ColumnHeaderMouseClick Try
I'm looping through rows in a datagridview, and selecting a cell from the 3rd column each time:
Dim customer_name as String For Each dgvr As DataGridViewRow In myDataGridView.Rows customer_name= dgvr.Cells(2).Value '.... next dgvr
However, I'd really like to make it dynamic, in case a new column gets added to the grid, so that I need the 4th column, not the 3rd. I'd like to use the column's header text. So something like...
how do I get the Header text of the header the user clicked in the datagridview.I know I have to use the column header click event but I can't work out or find away to extract the clicked header data?
Can I show checkboxes to the column headers in datagridview for each column in my dgv I Used [url] for help but it replaces the header cells one by one .Can I use any property of dgv which shows checkboxes for all column headers
I have a windows application with many forms. We use the DataGridView control on most of the forms, but on a new form that I designed I have four DataGridViews. All of the DataGridViews on this form do not dipaly the Column Header Text when the form is displayed when running in the IDE. I do not receive any errors or messages. The other DataGridVeiws on other forms display their column header text just fine. I am at a loss as to why this is happining on this form.
UPDATE: If I add the desired text to the column.HeaderText property at the end of the form load event it displays the column header text. For example AssignedAmountColumn.HeaderText = "Amount" it displays Amount in the column when run from the IDE.... However it dosn't display when the property is set though the Columns property at design time.
At runtime, I am adding a DataGridView to a windows form. The final column is a DataGridViewImageColumn:
Dim InfoIconColumn As New DataGridViewImageColumn MyDataGridView.Columns.Insert(MyDataGridView.Columns.Count, InfoIconColumn)
Adding the following code will get my Information Icon (bitmap) to display in each of the column cells but NOT the column header:
Dim InfoIcon As New Bitmap("C:MyPathInfoIcon.bmp") InfoIconColumn.Image = InfoIcon
Also, it is worth noting that the image displays 'perfectly' in the cells i.e. it is sized correctly to fit the cell.
However, I cannot find a way to add the same image to the column header cell. After some googling I used the following code which placed the image in the header cell but left me with two problems:
The image did not 'auto-size' to the column headercell in the same way it did when added to the column cells. The image was slightly larger and blurred. By using the _CellPainting event slowed down performance i.e. when hovering over the DataGridView to highlight the selected row the highlighting lagged behind where my mouse was placed.
Here is the code:
[Code]...
Does anybody know of a way to solve my problem and get a nicely sized, sharp image into a DataGridViewImageColumn headercell at runtime?
I have a custom datagridview. I have to merge the 1st to 5th column header of that grid.I have handled Paint, Scroll and ColumnWidthChanged event as the following code:[code]
I have a DataGridView with SelectionMode = "CellSelect". I do this because I want the user to be able to click the Column Header and drag the column to a different DisplayIndex. They move the column by clicking and holding down the left mouse button, then moving the column. I also want the user to be able to click the column header and all the cells in the column would be selected. But if I change the SelectionMode property to "FullColumnSelect" or "ColumnHeaderSelect" the user can no longer move the column.In the code below, I can select all the cells in the DataGridView just fine, but I can't select all cells in a particular Column or Row. [code]...
I'm using VB.Net 2008 application program. I'm using DataGridView. I have a Print option where I need to print the DataGridView. I'm using this code for Printing and for Print Preview.
Dim MyDataGridViewPrinter As DataGridViewPrinter Private Function SetupThePrinting() As Boolean Dim MyPrintDialog As PrintDialog = New PrintDialog() MyPrintDialog.AllowCurrentPage = False MyPrintDialog.AllowPrintToFile = False [Code] ..... Attached the class I'm using for print.
I have 10 fields showing in datagridview. As the last 5 columns header is long, the datagridview is not fitting inside 1 page (not showing all 10 fields in one single page). But is there a way i can "Text Wrap" the top header column and lock in the width, then it should print across one page perfectly. How I can "Text Wrap" the top header column and lock in the width to print across one page.
I�m using VB.Net 2008 application program.I�m using DataGridView. I have a Print option where i need to print the DataGridView. I�m using this code for Printing and for Print Preview.
Code: Dim MyDataGridViewPrinter As DataGridViewPrinter Private Function SetupThePrinting() As Boolean Dim MyPrintDialog As PrintDialog = New PrintDialog()
[code]....
Attached the class i'm using for print.I have 10 fields showing in datagridview. As the last 5 columns header is long, the datagridview is not fitting inside 1 page (not showing all 10 fields in one single page). But is there a way i can "Text Wrap" the top header column and lock in the width, then it should print across one page perfectly.If you know how i can "Text Wrap" the top header column and lock in the width to print across one page?
I'm going through my company's program making sure that all icons have tooltips. We have a lot of grids with icons, but in case the settings for the tooltip to show up are not there, the column header should have the same tooltip as the icon. In regular grids I just click the column header, and then the properties for it show up in the bottom right corner in Visual Studio. However, we have some treeviews, and when I click on the column header of a column in the treeview, Tooltip is not among the properties I can edit. How to make a tooltip show up on such a column header?
I have a listview that has multiple columns. I am wanting to sort these columns when clicking on the column header.I see there is a sort function, but am not having much luck in using it.How can i sort my listview when clicking on the column header?
I have set a column (which is a phone number) in the designer with the following: DataGridViewCellStyle { Format="(###)###-####" } This seems to have no affect upon the results when it is displayed. It simply displays ########## every time. Where should I set the formatting?
I believe that my questions are all going to revolve around the internal workings of DataGridView.While this is specifically written in VB.Net, it is definitely a general Visual Studio object question generically related to anyone working with .Net.I've been trying to find a forum where I can get some interaction and help to move forward.Microsoft's websites seem to be all questions and no answers.
I'm using VB.Net under Visual Studio 2005 SP2.I need to have a DataColumn that is dynamically visible based on other data in the same DataRow.After a lot of unsuccessful testing with various methods of accomplishing this, I came across the concept of Custom Cells/Columns.I started with several slightly varying examples and everything seemed to be falling into place. I tried to research each property and attribute as I incrementally learned a lot about the internal workings of Windows controls in general and DataGridView in particular.
The confusing symptom is that as I scroll down through the grid, the painting of the custom cells is at best unreliable.I created a minimum test case to eliminate as many variables as possible and I combined all of the source into one Form1.vb as follows:
I need to pull data from a database into a DataGridView, problem is the status field is stored as a 0 or 1. Not very useful to the end user.ere is my datagridview;
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Try
