InvalidOperationException On Trying To Color DGV Cell?
Jan 20, 2012
I have a loop that will determine if a certain value is within the specification limits that I assign. The problem is, when the loop starts, I get the following exception:system.InvalidOperationException was unhandled Message=Cell provided already belongs to a grid. This operation is not valid.
I'm not sure exactly why I am getting this exception...OF COURSE the cell is already part of a grid! I just want to color it! Anyway, here is the code I am using:
Private Sub ColorAllCells()
For row As Integer = 0 to dgvCurSetLanes.Rows.Count - 1
[code]....
The exception occurs as soon as I call ColorAllCells
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Jan 16, 2010
I want to have my current row stand out as the current row by virtue of the background color.I also want my current cell stand out from the row color.
in other words i want to controll the background of the current cell as well as the current row, and have these colors different from each other as wel as the background from the non current cells.
I am getting confused with the notion of the current row vs the selected row.I have tried messing with the default row style.selectedbackgroungcolor as well as the same for the default cell style, but cant get it to work the way i want.
i can almost get it if i set the selection mode to full row, but then cannot get the current cell to have a different background color.
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Feb 16, 2011
I have a DataGridView named grid_LivingBenefits which ReadOnly Property is set to false.
Then I have to set a certain column Readonly and set a different backcolor.
I have successfully made just one column readonly but I can't change its backcolor to make it different from the other columns.[code]...
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Sep 10, 2011
im working in visual basic .net,i have a datagridview like this:[URL]...I want that when the user selects a whole row, only the values of the cells that have colors will be saved to textboxes, something like Textbox1.Text = cellwithcolor1, and so on with other cells that have color. Like, if we see the image, in row 3, 'AS' will be saved in textbox1, and 'CR' in textbox2.
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Oct 15, 2011
I am using vb.net and I have an asp.net application where I use ExcelPackage. I wanted to know how to set the background color of a particular cell or a row of cells.
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Oct 22, 2010
So I'm using VB.NET 2005 to create an ASP page. I have a calendar object and I need to find a way to change the BackColor of the cell from a database table. I've tried every way I can think of with no luck so far.This is what I have for code so far which works for some situations but not for all the ones I would like and to hard code it would be very tedious.
[Code]...
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Jan 10, 2007
I'm having problems trying to change individual cells' colors in a datagrid. I saw a few hints which would make things easy, but unfortunately I'm working with Visual Studio 2003, so I don't have access to the newer attributes.
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Feb 22, 2010
I'd like to check for the value in a datagridview column (firts column) and if it's "YES" then change its row color to red.The following code is not doing the job for me nor is generating an error, Can pls someone tell me what I'm doing wrong?
[Code]...
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Jun 21, 2010
I have a datagridview which I would like to change the the color of the text in a cell if the number is negative in the Total column. This is what I have so far.
Dim rowcont As Integer = (TTLGrid.Rows.Count) - 1
For x = 0 To rowcont
Dim Total As String = TTLGrid.Rows(x).Cells(4).FormattedValue
[Code].....
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Apr 26, 2010
I have a bunch of columns in a datagrid view (date, transaction type, amount).If the amount in a row is '150.00', I want to make that cell red.I made a Private Sub and run this after the datagridview is filled.
Private Sub ColorCells()
Dim ColumnCount As Integer
ColumnCount = dgvLedger.ColumnCount - 1[code].....
However it seems to have two bugs. When it is first run the first time when the form is loaded, it doesn't put the rows with 150.00 in it in red.If I have a button on the form and set it to run this Private Sub, then it runs through it again and will color the ones in 150 as red.If I resort the datagridview by clicking on a column, they all return to green again, and it looses the formatting.
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Nov 11, 2010
How would I sort or filter the datagridview so that only cells that are color.red are viewable? What I have now shows all of the red and not red cells with the values <=0 else color.black. But if I were to put this on a button I would want only to see the color.red cells on the gridview.
Try
'##############################
For Each dgr As DataGridViewRow In dgProducts.Rows
'##############################
If CInt(dgr.Cells(4).Value) <= 0 Then
dgr.DefaultCellStyle.ForeColor = Color.Red
Else
dgr.DefaultCellStyle.ForeColor = Color.Black
End If
Next
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Oct 18, 2010
i have a program thats a database that is Sql. im using vb 2010 express. would i would like to know what would be the best way if the date is older than the date in the cell then turn the cell red.
would i use something with Dategridview? i know im lost on this it cell 2 i need turned red if the date is older than todays.
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May 20, 2011
I have a datagrid that will get built at runtime. So i don't now how many columns I may have.I know I can do a column count, and get a list of the names. So don't think that will be a problem.What I'm trying to do is change only the CELL color, not the row, or the column, based on the value of the cell.Below is something I started with, but it clearly doesn't work.
' For Each row As DataGridViewRow In Me.QDGV.Rows
' ' Get the READY value from each row as we loop
' strExt = CStr(row.Cells.Item(4).Value)
[code]....
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Jul 8, 2011
I need to dynamicly write some VB.net code to change the colors of different cells in a TableLayoutPanel based on specific criteria. I have search for VB code to perform this but am unable to find any. I have found some C code that does it but I am unfamiliar with C. Is there anyone on this forum that can translate this into VB.net code, please? I am using VS 2010.[code]...
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Jun 13, 2011
Is it possible to change the background color of a cell when I click on it?
Also, is it possible to set a property so that when a cell is clicked on once it already has the focus that the 'edit' text feature doesn't let the user to change the text?
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Dec 1, 2008
I was looking to change the background color of a datagrid cell when the cell value changes
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Aug 8, 2011
I am writing some data from database to the excel via visual basic.net.I need to change background of some cells and also need to make text bold. I need something like that :
xlWorkSheet.Cells(rownumber, 1).BackgroundColor = Color.Yellow
xlWorkSheet.Cells(rownumber, 1).Font.isBold = True
Of course none of above is works.How can I achieve this?
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Feb 1, 2010
I'm using the following code to displays the next few days in excel...
xlTemp.Range("A3").Value = " " + String.Format("{0:MMMM d, yyyy}", DateTime.Today)
xlTemp.Range("B3").Value = " " + String.Format("{0:MMMM d, yyyy}", DateTime.Today.AddDays(1))
xlTemp.Range("C3").Value = " " + String.Format("{0:MMMM d, yyyy}", DateTime.Today.AddDays(2))
xlTemp.Range("D3").Value = " " + String.Format("{0:MMMM d, yyyy}", DateTime.Today.AddDays(3))
xlTemp.Range("E3").Value = " " + String.Format("{0:MMMM d, yyyy}", DateTime.Today.AddDays(4))
How would I find the weekends and change the cell color to a different color then just regular week days?
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Jun 13, 2011
Is there a way to locate a cell by back color? I have a datagrid, that will populate names, on some of the cells. Some of the cells will be empty.
I have it so if there is a name in the cell, the background color will change to blue. I also can look for a specific value, and locate the value that way, and then change the color the cell or whatever.
The problem is that I have 4 different status for a cell with the same name. So for example, "Joe" name will show up in the grid. That cell background will turn blue.
The next status is "Check-In". So I can return the value "Joe" from my database with a store procedure, and look for that value of "Joe" again, and change the color to red to show he is checked in. The other 2 status I have is In Session, Session over. The problem is what if there is more than 1 "Joe"?
I think the best way is using the datagrids CellPaintings. But I can't find any other value beside a value to locate a cell on that procedure. So I thought if there is a way I can find a cell by the e.value = "Joe" and cell.backcolor = color.blue, than I can avoid having problems with multiples names.
I would be open to any other ideas, or a better way of doing this. Oh, is there a way to use tags for a cell value? I thought that might be a way was well.
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Dec 12, 2011
I want to set Color to specific cell in DataGridView as in this code , but didn't accept BackColor property.
Form1.DataGridView1.CurrentRow.Cells(3)......BackColor
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Jun 8, 2012
I want when I click on a single cell of a TableLayoutPanel (containing a control), that cell need to have a color and when I click on another cell, the previous cell color removed and add to the cell clicked.I know it has something to do with the position of the mousepointer, but the only thing I found on google, was pre-defined cells and the than the color.
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Mar 3, 2010
I have a datagrid view with 8 columns. How do I change the background color for any cell in columns 2-5 where the value equals the value in column 8. For instance:
[Code]...
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Apr 25, 2007
I have a DataGridView that has been dragged over from the DataSource Tab. All works good.I need to have the background color of some of the cells changed based on other columns in that same row. Such as, have the background color of a cell Red if the Status column (not shown) relates to 90 days overdue. The next row may be different.
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May 17, 2012
[code]...
completely understand what it does, when the cell value is changed the color of the cell changes according to the value selected.
Now, how would i change this code so that it works when the form loads? so cells show the color when the form loads. red for unpaid and green for paid.
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May 18, 2012
I am having a loading problem, the problem is my formating code takes way to long to load.
What I have is a datagridview that is loaded by one table and I want to format the cells based on data from another table, the following code works, but it gets slower and slower as I add more records to the data.[code]...
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Apr 28, 2009
How can i set the background color for datalist empty items
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Sep 8, 2010
I have a DGV where I'm setting the backcolor of certain cells to light gray. But I need to be able to restore the backcolor to what it was before I changed it to gray. I could just set it to transparent, but the problem with that is that I use an alternating row color of alice blue for the DGV & setting a cell in a blue row to transparent makes it white. So, in summary, I need to be able to restore white rows to white & blue rows to blue. Any ideas? I thought about checking the backcolor of another column in the row & then using that to reset the cell, but that seems kind of a hack.
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Aug 30, 2011
I've been trying to customise a datagridview but no luck so far, thing is, i want some of the cells to not have the same grid colour and width as all the rest of the grid. Do you guys know how can this be done? I know it is possible cause i've seen it before but i have no clue how to accomplish that.
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Nov 10, 2010
I would like to be able to show the defaultstyle of the cell in the form load
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Apr 26, 2011
I am filling a DataGridView from a table in SQL Server 2008. There is one column that is a string which contains either "YES" or "NO".When I run and display the DataGridView it displays perfectly. For the User's benefiy, if the field contains "NO" I want to put some emphasis on it by changing the fore color and back coler of the entire row. In the DGV the index for field is (4).I tried this code which threw an error on the word "value" inthe block that fills the DGV.
IF DGV,Columns(4),Value="NO"....
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